Merge branch 'master' of git://git.denx.de/u-boot-i2c

- DM_I2C_COMPAT removal for all ti platforms from Jean-Jacques Hiblot
- Fix in i2c command help output from Chirstoph Muellner.

arch/arm/dts/am437x-gp-evm-u-boot.dtsi

@@ -36,3 +36,7 @@
 &phy_sel {
 	u-boot,dm-spl;
 };
+
+&i2c0 {
+	u-boot,dm-spl;
+};

arch/arm/dts/omap5-u-boot.dtsi

@@ -95,3 +95,7 @@
 &gpio7 {
 	u-boot,dm-spl;
 };
+
+&i2c1 {
+	u-boot,dm-spl;
+};

arch/arm/include/asm/arch-am33xx/i2c.h

@@ -6,57 +6,14 @@
 #ifndef _I2C_AM33XX_H_
 #define _I2C_AM33XX_H_
 
+#include <asm/omap_i2c.h>
+
 #define  I2C_BASE1		0x44E0B000
 #define  I2C_BASE2		0x4802A000
 #define  I2C_BASE3		0x4819C000
 
 #define I2C_DEFAULT_BASE		I2C_BASE1
 
-struct i2c {
-	unsigned short revnb_lo;        /* 0x00 */
-	unsigned short res1;
-	unsigned short revnb_hi;        /* 0x04 */
-	unsigned short res2[5];
-	unsigned short sysc;		/* 0x10 */
-	unsigned short res3[9];
-	unsigned short irqstatus_raw;   /* 0x24 */
-	unsigned short res4;
-	unsigned short stat;            /* 0x28 */
-	unsigned short res5;
-	unsigned short ie;              /* 0x2C */
-	unsigned short res6;
-	unsigned short irqenable_clr;   /* 0x30 */
-	unsigned short res7;
-	unsigned short iv;              /* 0x34 */
-	unsigned short res8[45];
-	unsigned short syss;            /* 0x90 */
-	unsigned short res9;
-	unsigned short buf;             /* 0x94 */
-	unsigned short res10;
-	unsigned short cnt;             /* 0x98 */
-	unsigned short res11;
-	unsigned short data;            /* 0x9C */
-	unsigned short res13;
-	unsigned short res14;           /* 0xA0 */
-	unsigned short res15;
-	unsigned short con;             /* 0xA4 */
-	unsigned short res16;
-	unsigned short oa;              /* 0xA8 */
-	unsigned short res17;
-	unsigned short sa;              /* 0xAC */
-	unsigned short res18;
-	unsigned short psc;             /* 0xB0 */
-	unsigned short res19;
-	unsigned short scll;            /* 0xB4 */
-	unsigned short res20;
-	unsigned short sclh;            /* 0xB8 */
-	unsigned short res21;
-	unsigned short systest;         /* 0xBC */
-	unsigned short res22;
-	unsigned short bufstat;         /* 0xC0 */
-	unsigned short res23;
-};
-
 #define I2C_IP_CLK			48000000
 #define I2C_INTERNAL_SAMPLING_CLK	12000000
 

arch/arm/include/asm/arch-omap3/i2c.h

@@ -8,51 +8,4 @@
 
 #define I2C_DEFAULT_BASE	I2C_BASE1
 
-struct i2c {
-	unsigned short rev;	/* 0x00 */
-	unsigned short res1;
-	unsigned short ie;	/* 0x04 */
-	unsigned short res2;
-	unsigned short stat;	/* 0x08 */
-	unsigned short res3;
-	unsigned short we;	/* 0x0C */
-	unsigned short res4;
-	unsigned short syss;	/* 0x10 */
-	unsigned short res4a;
-	unsigned short buf;	/* 0x14 */
-	unsigned short res5;
-	unsigned short cnt;	/* 0x18 */
-	unsigned short res6;
-	unsigned short data;	/* 0x1C */
-	unsigned short res7;
-	unsigned short sysc;	/* 0x20 */
-	unsigned short res8;
-	unsigned short con;	/* 0x24 */
-	unsigned short res9;
-	unsigned short oa;	/* 0x28 */
-	unsigned short res10;
-	unsigned short sa;	/* 0x2C */
-	unsigned short res11;
-	unsigned short psc;	/* 0x30 */
-	unsigned short res12;
-	unsigned short scll;	/* 0x34 */
-	unsigned short res13;
-	unsigned short sclh;	/* 0x38 */
-	unsigned short res14;
-	unsigned short systest;	/* 0x3c */
-	unsigned short res15;
-	unsigned short bufstat;	/* 0x40 */
-	unsigned short res16;
-	unsigned short oa1;	/* 0x44 */
-	unsigned short res17;
-	unsigned short oa2;	/* 0x48 */
-	unsigned short res18;
-	unsigned short oa3;	/* 0x4c */
-	unsigned short res19;
-	unsigned short actoa;	/* 0x50 */
-	unsigned short res20;
-	unsigned short sblock;	/* 0x54 */
-	unsigned short res21;
-};
-
 #endif /* _OMAP3_I2C_H_ */

arch/arm/include/asm/arch-omap4/i2c.h

@@ -8,49 +8,4 @@
 
 #define I2C_DEFAULT_BASE	I2C_BASE1
 
-struct i2c {
-	unsigned short revnb_lo;	/* 0x00 */
-	unsigned short res1;
-	unsigned short revnb_hi;	/* 0x04 */
-	unsigned short res2[5];
-	unsigned short sysc;		/* 0x10 */
-	unsigned short res3[9];
-	unsigned short irqstatus_raw;	/* 0x24 */
-	unsigned short res4;
-	unsigned short stat;		/* 0x28 */
-	unsigned short res5;
-	unsigned short ie;		/* 0x2C */
-	unsigned short res6;
-	unsigned short irqenable_clr;	/* 0x30 */
-	unsigned short res7;
-	unsigned short iv;		/* 0x34 */
-	unsigned short res8[45];
-	unsigned short syss;		/* 0x90 */
-	unsigned short res9;
-	unsigned short buf;		/* 0x94 */
-	unsigned short res10;
-	unsigned short cnt;		/* 0x98 */
-	unsigned short res11;
-	unsigned short data;		/* 0x9C */
-	unsigned short res13;
-	unsigned short res14;		/* 0xA0 */
-	unsigned short res15;
-	unsigned short con;		/* 0xA4 */
-	unsigned short res16;
-	unsigned short oa;		/* 0xA8 */
-	unsigned short res17;
-	unsigned short sa;		/* 0xAC */
-	unsigned short res18;
-	unsigned short psc;		/* 0xB0 */
-	unsigned short res19;
-	unsigned short scll;		/* 0xB4 */
-	unsigned short res20;
-	unsigned short sclh;		/* 0xB8 */
-	unsigned short res21;
-	unsigned short systest;		/* 0xBC */
-	unsigned short res22;
-	unsigned short bufstat;		/* 0xC0 */
-	unsigned short res23;
-};
-
 #endif /* _OMAP4_I2C_H_ */

arch/arm/include/asm/arch-omap5/i2c.h

@@ -8,49 +8,4 @@
 
 #define I2C_DEFAULT_BASE	I2C_BASE1
 
-struct i2c {
-	unsigned short revnb_lo;	/* 0x00 */
-	unsigned short res1;
-	unsigned short revnb_hi;	/* 0x04 */
-	unsigned short res2[5];
-	unsigned short sysc;		/* 0x10 */
-	unsigned short res3[9];
-	unsigned short irqstatus_raw;	/* 0x24 */
-	unsigned short res4;
-	unsigned short stat;		/* 0x28 */
-	unsigned short res5;
-	unsigned short ie;		/* 0x2C */
-	unsigned short res6;
-	unsigned short irqenable_clr;	/* 0x30 */
-	unsigned short res7;
-	unsigned short iv;		/* 0x34 */
-	unsigned short res8[45];
-	unsigned short syss;		/* 0x90 */
-	unsigned short res9;
-	unsigned short buf;		/* 0x94 */
-	unsigned short res10;
-	unsigned short cnt;		/* 0x98 */
-	unsigned short res11;
-	unsigned short data;		/* 0x9C */
-	unsigned short res13;
-	unsigned short res14;		/* 0xA0 */
-	unsigned short res15;
-	unsigned short con;		/* 0xA4 */
-	unsigned short res16;
-	unsigned short oa;		/* 0xA8 */
-	unsigned short res17;
-	unsigned short sa;		/* 0xAC */
-	unsigned short res18;
-	unsigned short psc;		/* 0xB0 */
-	unsigned short res19;
-	unsigned short scll;		/* 0xB4 */
-	unsigned short res20;
-	unsigned short sclh;		/* 0xB8 */
-	unsigned short res21;
-	unsigned short systest;		/* 0xBC */
-	unsigned short res22;
-	unsigned short bufstat;		/* 0xC0 */
-	unsigned short res23;
-};
-
 #endif /* _OMAP5_I2C_H_ */

arch/arm/include/asm/omap_i2c.h

+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _OMAP_I2C_H
+#define _OMAP_I2C_H
+
+#include <asm/arch/cpu.h>
+
+#ifdef CONFIG_DM_I2C
+
+/* Information about a GPIO bank */
+struct omap_i2c_platdata {
+	ulong base;	/* address of registers in physical memory */
+	int speed;
+	int ip_rev;
+};
+
+#endif
+
+enum {
+	OMAP_I2C_REV_V1 = 0,
+	OMAP_I2C_REV_V2 = 1,
+};
+
+#endif /* _OMAP_I2C_H */

arch/arm/mach-keystone/ddr3_spd.c

@@ -403,6 +403,7 @@ static void init_ddr3param(struct ddr3_spd_cb *spd_cb,
 static int ddr3_read_spd(ddr3_spd_eeprom_t *spd_params)
 {
 	int ret;
+#ifndef CONFIG_DM_I2C
 	int old_bus;
 
 	i2c_init(CONFIG_SYS_DAVINCI_I2C_SPEED, CONFIG_SYS_DAVINCI_I2C_SLAVE);
@@ -413,7 +414,13 @@ static int ddr3_read_spd(ddr3_spd_eeprom_t *spd_params)
 	ret = i2c_read(0x53, 0, 1, (unsigned char *)spd_params, 256);
 
 	i2c_set_bus_num(old_bus);
+#else
+	struct udevice *dev;
 
+	ret = i2c_get_chip_for_busnum(1, 0x53, 1, &dev);
+	if (!ret)
+		ret = dm_i2c_read(dev, 0, (unsigned char *)spd_params, 256);
+#endif
 	if (ret) {
 		printf("Cannot read DIMM params\n");
 		return 1;

arch/arm/mach-omap2/am33xx/board.c

@@ -19,6 +19,7 @@
 #include <asm/arch/ddr_defs.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/gpio.h>
+#include <asm/arch/i2c.h>
 #include <asm/arch/mem.h>
 #include <asm/arch/mmc_host_def.h>
 #include <asm/arch/sys_proto.h>
@@ -93,6 +94,20 @@ U_BOOT_DEVICES(am33xx_uarts) = {
 #  endif
 };
 
+#ifdef CONFIG_DM_I2C
+static const struct omap_i2c_platdata am33xx_i2c[] = {
+	{ I2C_BASE1, 100000, OMAP_I2C_REV_V2},
+	{ I2C_BASE2, 100000, OMAP_I2C_REV_V2},
+	{ I2C_BASE3, 100000, OMAP_I2C_REV_V2},
+};
+
+U_BOOT_DEVICES(am33xx_i2c) = {
+	{ "i2c_omap", &am33xx_i2c[0] },
+	{ "i2c_omap", &am33xx_i2c[1] },
+	{ "i2c_omap", &am33xx_i2c[2] },
+};
+#endif
+
 #ifdef CONFIG_DM_GPIO
 static const struct omap_gpio_platdata am33xx_gpio[] = {
 	{ 0, AM33XX_GPIO0_BASE },
@@ -457,12 +472,15 @@ void early_system_init(void)
 #ifdef CONFIG_DEBUG_UART_OMAP
 	debug_uart_init();
 #endif
-#ifdef CONFIG_TI_I2C_BOARD_DETECT
-	do_board_detect();
-#endif
+
 #ifdef CONFIG_SPL_BUILD
 	spl_early_init();
 #endif
+
+#ifdef CONFIG_TI_I2C_BOARD_DETECT
+	do_board_detect();
+#endif
+
 #if defined(CONFIG_SPL_AM33XX_ENABLE_RTC32K_OSC)
 	/* Enable RTC32K clock */
 	rtc32k_enable();

arch/arm/mach-omap2/am33xx/clk_synthesizer.c

@@ -14,6 +14,7 @@
 
 /**
  * clk_synthesizer_reg_read - Read register from synthesizer.
+ * dev:		i2c bus device (not used if CONFIG_DM_I2C is not set)
  * @addr:	addr within the i2c device
  * buf:		Buffer to which value is to be read.
  *
@@ -21,13 +22,14 @@
  * be send along with enabling byte read more, and then read can happen.
  * Returns 0 on success
  */
-static int clk_synthesizer_reg_read(int addr, uint8_t *buf)
+static int clk_synthesizer_reg_read(struct udevice *dev, int addr, u8 *buf)
 {
 	int rc;
 
 	/* Enable Bye read */
 	addr = addr | CLK_SYNTHESIZER_BYTE_MODE;
 
+#ifndef CONFIG_DM_I2C
 	/* Send the command byte */
 	rc = i2c_write(CLK_SYNTHESIZER_I2C_ADDR, addr, 1, buf, 1);
 	if (rc)
@@ -35,26 +37,46 @@ static int clk_synthesizer_reg_read(int addr, uint8_t *buf)
 
 	/* Read the Data */
 	return i2c_read(CLK_SYNTHESIZER_I2C_ADDR, addr, 1, buf, 1);
+#else
+	/* Send the command byte */
+	rc = dm_i2c_reg_write(dev, addr, *buf);
+	if (rc)
+		printf("Failed to send command to clock synthesizer\n");
+
+	/* Read the Data */
+	rc = dm_i2c_reg_read(dev, addr);
+	if (rc < 0)
+		return rc;
+
+	*buf = (u8)rc;
+	return 0;
+#endif
+
 }
 
 /**
  * clk_synthesizer_reg_write - Write a value to register in synthesizer.
+ * dev:		i2c bus device (not used if CONFIG_DM_I2C is not set)
  * @addr:	addr within the i2c device
  * val:		Value to be written in the addr.
  *
  * Enable the byte read mode in the address and start the i2c transfer.
  * Returns 0 on success
  */
-static int clk_synthesizer_reg_write(int addr, uint8_t val)
+static int clk_synthesizer_reg_write(struct udevice *dev, int addr, u8 val)
 {
-	uint8_t cmd[2];
+	u8 cmd[2];
 	int rc = 0;
 
 	/* Enable byte write */
 	cmd[0] = addr | CLK_SYNTHESIZER_BYTE_MODE;
 	cmd[1] = val;
 
+#ifndef CONFIG_DM_I2C
 	rc = i2c_write(CLK_SYNTHESIZER_I2C_ADDR, addr, 1, cmd, 2);
+#else
+	rc = dm_i2c_write(dev, addr, cmd, 2);
+#endif
 	if (rc)
 		printf("Clock synthesizer reg write failed at addr = 0x%x\n",
 		       addr);
@@ -72,30 +94,42 @@ static int clk_synthesizer_reg_write(int addr, uint8_t val)
 int setup_clock_synthesizer(struct clk_synth *data)
 {
 	int rc;
-	uint8_t val;
-
+	u8 val = 0;
+	struct udevice *dev = NULL;
+#ifndef CONFIG_DM_I2C
 	rc =  i2c_probe(CLK_SYNTHESIZER_I2C_ADDR);
 	if (rc) {
 		printf("i2c probe failed at address 0x%x\n",
 		       CLK_SYNTHESIZER_I2C_ADDR);
 		return rc;
 	}
-
-	rc = clk_synthesizer_reg_read(CLK_SYNTHESIZER_ID_REG, &val);
+#else
+	rc = i2c_get_chip_for_busnum(0, CLK_SYNTHESIZER_I2C_ADDR, 1, &dev);
+	if (rc) {
+		printf("failed to get device for synthesizer at address 0x%x\n",
+		       CLK_SYNTHESIZER_I2C_ADDR);
+		return rc;
+	}
+#endif
+	rc = clk_synthesizer_reg_read(dev, CLK_SYNTHESIZER_ID_REG, &val);
 	if (val != data->id)
 		return rc;
 
 	/* Crystal Load capacitor selection */
-	rc = clk_synthesizer_reg_write(CLK_SYNTHESIZER_XCSEL, data->capacitor);
+	rc = clk_synthesizer_reg_write(dev, CLK_SYNTHESIZER_XCSEL,
+				       data->capacitor);
 	if (rc)
 		return rc;
-	rc = clk_synthesizer_reg_write(CLK_SYNTHESIZER_MUX_REG, data->mux);
+	rc = clk_synthesizer_reg_write(dev, CLK_SYNTHESIZER_MUX_REG,
+				       data->mux);
 	if (rc)
 		return rc;
-	rc = clk_synthesizer_reg_write(CLK_SYNTHESIZER_PDIV2_REG, data->pdiv2);
+	rc = clk_synthesizer_reg_write(dev, CLK_SYNTHESIZER_PDIV2_REG,
+				       data->pdiv2);
 	if (rc)
 		return rc;
-	rc = clk_synthesizer_reg_write(CLK_SYNTHESIZER_PDIV3_REG, data->pdiv3);
+	rc = clk_synthesizer_reg_write(dev, CLK_SYNTHESIZER_PDIV3_REG,
+				       data->pdiv3);
 	if (rc)
 		return rc;
 

arch/arm/mach-omap2/clocks-common.c

@@ -909,6 +909,7 @@ void prcm_init(void)
 		enable_basic_uboot_clocks();
 }
 
+#if !defined(CONFIG_DM_I2C)
 void gpi2c_init(void)
 {
 	static int gpi2c = 1;
@@ -919,3 +920,4 @@ void gpi2c_init(void)
 		gpi2c = 0;
 	}
 }
+#endif

arch/arm/mach-omap2/hwinit-common.c

@@ -12,6 +12,7 @@
  */
 #include <common.h>
 #include <debug_uart.h>
+#include <fdtdec.h>
 #include <spl.h>
 #include <asm/arch/sys_proto.h>
 #include <linux/sizes.h>
@@ -19,6 +20,7 @@
 #include <asm/omap_common.h>
 #include <linux/compiler.h>
 #include <asm/system.h>
+#include <dm/root.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -171,6 +173,10 @@ void __weak init_package_revision(void)
  */
 void early_system_init(void)
 {
+#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_MULTI_DTB_FIT)
+	int ret;
+	int rescan;
+#endif
 	init_omap_revision();
 	hw_data_init();
 	init_package_revision();
@@ -186,6 +192,7 @@ void early_system_init(void)
 	do_io_settings();
 #endif
 	setup_early_clocks();
+
 #ifdef CONFIG_SPL_BUILD
 	/*
 	 * Save the boot parameters passed from romcode.
@@ -193,11 +200,23 @@ void early_system_init(void)
 	 * to prevent overwrites.
 	 */
 	save_omap_boot_params();
+	spl_early_init();
 #endif
 	do_board_detect();
-#ifdef CONFIG_SPL_BUILD
-	spl_early_init();
+
+#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_MULTI_DTB_FIT)
+	/*
+	 * Board detection has been done.
+	 * Let us see if another dtb wouldn't be a better match
+	 * for our board
+	 */
+	ret = fdtdec_resetup(&rescan);
+	if (!ret && rescan) {
+		dm_uninit();
+		dm_init_and_scan(true);
+	}
 #endif
+
 	vcores_init();
 #ifdef CONFIG_DEBUG_UART_OMAP
 	debug_uart_init();

board/eets/pdu001/board.c

@@ -209,7 +209,6 @@ void am33xx_spl_board_init(void)
 const struct dpll_params *get_dpll_ddr_params(void)
 {
 	enable_i2c0_pin_mux();
-	i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE);
 
 	return &dpll_ddr;
 }

board/ti/am335x/board.c

@@ -70,8 +70,9 @@ static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
 void do_board_detect(void)
 {
 	enable_i2c0_pin_mux();
+#ifndef CONFIG_DM_I2C
 	i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE);
-
+#endif
 	if (ti_i2c_eeprom_am_get(CONFIG_EEPROM_BUS_ADDRESS,
 				 CONFIG_EEPROM_CHIP_ADDRESS))
 		printf("ti_i2c_eeprom_init failed\n");
@@ -328,8 +329,14 @@ static void scale_vcores_bone(int freq)
 	if (board_is_bone() && !strncmp(board_ti_get_rev(), "00A1", 4))
 		return;
 
+#ifndef CONFIG_DM_I2C
 	if (i2c_probe(TPS65217_CHIP_PM))
 		return;
+#else
+	if (power_tps65217_init(0))
+		return;
+#endif
+
 
 	/*
 	 * On Beaglebone White we need to ensure we have AC power
@@ -421,9 +428,13 @@ void scale_vcores_generic(int freq)
 	 * 1.10V.  For MPU voltage we need to switch based on
 	 * the frequency we are running at.
 	 */
+#ifndef CONFIG_DM_I2C
 	if (i2c_probe(TPS65910_CTRL_I2C_ADDR))
 		return;
-
+#else
+	if (power_tps65910_init(0))
+		return;
+#endif
 	/*
 	 * Depending on MPU clock and PG we will need a different
 	 * VDD to drive at that speed.
@@ -451,8 +462,10 @@ void gpi2c_init(void)
 
 	if (first_time) {
 		enable_i2c0_pin_mux();
+#ifndef CONFIG_DM_I2C
 		i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED,
 			 CONFIG_SYS_OMAP24_I2C_SLAVE);
+#endif
 		first_time = false;
 	}
 }

board/ti/am335x/mux.c

@@ -329,12 +329,23 @@ static unsigned short detect_daughter_board_profile(void)
 {
 	unsigned short val;
 
+#ifndef CONFIG_DM_I2C
 	if (i2c_probe(I2C_CPLD_ADDR))
 		return PROFILE_NONE;
 
 	if (i2c_read(I2C_CPLD_ADDR, CFG_REG, 1, (unsigned char *)(&val), 2))
 		return PROFILE_NONE;
+#else
+	struct udevice *dev = NULL;
+	int rc;
 
+	rc = i2c_get_chip_for_busnum(0, I2C_CPLD_ADDR, 1, &dev);
+	if (rc)
+		return PROFILE_NONE;
+	rc = dm_i2c_read(dev, CFG_REG, (unsigned char *)(&val), 2);
+	if (rc)
+		return PROFILE_NONE;
+#endif
 	return (1 << (val & PROFILE_MASK));
 }
 

board/ti/am43xx/board.c

@@ -43,6 +43,8 @@ static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
 #ifdef CONFIG_TI_I2C_BOARD_DETECT
 void do_board_detect(void)
 {
+	/* Ensure I2C is initialized for EEPROM access*/
+	gpi2c_init();
 	if (ti_i2c_eeprom_am_get(CONFIG_EEPROM_BUS_ADDRESS,
 				 CONFIG_EEPROM_CHIP_ADDRESS))
 		printf("ti_i2c_eeprom_init failed\n");
@@ -386,8 +388,13 @@ void scale_vcores_generic(u32 m)
 {
 	int mpu_vdd, ddr_volt;
 
+#ifndef CONFIG_DM_I2C
 	if (i2c_probe(TPS65218_CHIP_PM))
 		return;
+#else
+	if (power_tps65218_init(0))
+		return;
+#endif
 
 	switch (m) {
 	case 1000:
@@ -439,8 +446,13 @@ void scale_vcores_idk(u32 m)
 {
 	int mpu_vdd;
 
+#ifndef CONFIG_DM_I2C
 	if (i2c_probe(TPS62362_I2C_ADDR))
 		return;
+#else
+	if (power_tps62362_init(0))
+		return;
+#endif
 
 	switch (m) {
 	case 1000:
@@ -462,14 +474,12 @@ void scale_vcores_idk(u32 m)
 		puts("Unknown MPU clock, not scaling\n");
 		return;
 	}
-
 	/* Set VDD_MPU voltage */
 	if (tps62362_voltage_update(TPS62362_SET3, mpu_vdd)) {
 		printf("%s failure\n", __func__);
 		return;
 	}
 }
-
 void gpi2c_init(void)
 {
 	/* When needed to be invoked prior to BSS initialization */
@@ -477,8 +487,10 @@ void gpi2c_init(void)
 
 	if (first_time) {
 		enable_i2c0_pin_mux();
+#ifndef CONFIG_DM_I2C
 		i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED,
 			 CONFIG_SYS_OMAP24_I2C_SLAVE);
+#endif
 		first_time = false;
 	}
 }
@@ -614,20 +626,32 @@ void sdram_init(void)
 /* setup board specific PMIC */
 int power_init_board(void)
 {
-	struct pmic *p;
-
+	int rc;
+#ifndef CONFIG_DM_I2C
+	struct pmic *p = NULL;
+#endif
 	if (board_is_idk()) {
-		power_tps62362_init(I2C_PMIC);
+		rc = power_tps62362_init(0);
+		if (rc)
+			goto done;
+#ifndef CONFIG_DM_I2C
 		p = pmic_get("TPS62362");
-		if (p && !pmic_probe(p))
-			puts("PMIC:  TPS62362\n");
+		if (!p || pmic_probe(p))
+			goto done;
+#endif
+		puts("PMIC:  TPS62362\n");
 	} else {
-		power_tps65218_init(I2C_PMIC);
+		rc = power_tps65218_init(0);
+		if (rc)
+			goto done;
+#ifndef CONFIG_DM_I2C
 		p = pmic_get("TPS65218_PMIC");
-		if (p && !pmic_probe(p))
-			puts("PMIC:  TPS65218\n");
+		if (!p || pmic_probe(p))
+			goto done;
+#endif
+		puts("PMIC:  TPS65218\n");
 	}
-
+done:
 	return 0;
 }
 

board/ti/am57xx/board.c

@@ -623,7 +623,7 @@ void am57x_idk_lcd_detect(void)
 {
 	int r = -ENODEV;
 	char *idk_lcd = "no";
-	uint8_t buf = 0;
+	struct udevice *dev;
 
 	/* Only valid for IDKs */
 	if (board_is_x15() || board_is_am572x_evm())
@@ -633,32 +633,29 @@ void am57x_idk_lcd_detect(void)
 	if (board_is_am571x_idk() && !am571x_idk_needs_lcd())
 		goto out;
 
-	r = i2c_set_bus_num(OSD_TS_FT_BUS_ADDRESS);
-	if (r) {
-		printf("%s: Failed to set bus address to %d: %d\n",
-		       __func__, OSD_TS_FT_BUS_ADDRESS, r);
-		goto out;
-	}
-	r = i2c_probe(OSD_TS_FT_CHIP_ADDRESS);
+	r = i2c_get_chip_for_busnum(OSD_TS_FT_BUS_ADDRESS,
+				    OSD_TS_FT_CHIP_ADDRESS, 1, &dev);
 	if (r) {
+		printf("%s: Failed to get I2C device %d/%d (ret %d)\n",
+		       __func__, OSD_TS_FT_BUS_ADDRESS, OSD_TS_FT_CHIP_ADDRESS,
+		       r);
 		/* AM572x IDK has no explicit settings for optional LCD kit */
-		if (board_is_am571x_idk()) {
+		if (board_is_am571x_idk())
 			printf("%s: Touch screen detect failed: %d!\n",
 			       __func__, r);
-		}
 		goto out;
 	}
 
 	/* Read FT ID */
-	r = i2c_read(OSD_TS_FT_CHIP_ADDRESS, OSD_TS_FT_REG_ID, 1, &buf, 1);
-	if (r) {
+	r = dm_i2c_reg_read(dev, OSD_TS_FT_REG_ID);
+	if (r < 0) {
 		printf("%s: Touch screen ID read %d:0x%02x[0x%02x] failed:%d\n",
 		       __func__, OSD_TS_FT_BUS_ADDRESS, OSD_TS_FT_CHIP_ADDRESS,
 		       OSD_TS_FT_REG_ID, r);
 		goto out;
 	}
 
-	switch (buf) {
+	switch (r) {
 	case OSD_TS_FT_ID_5606:
 		idk_lcd = "osd101t2045";
 		break;
@@ -667,7 +664,7 @@ void am57x_idk_lcd_detect(void)
 		break;
 	default:
 		printf("%s: Unidentifed Touch screen ID 0x%02x\n",
-		       __func__, buf);
+		       __func__, r);
 		/* we will let default be "no lcd" */
 	}
 out:

board/ti/common/board_detect.c

@@ -14,42 +14,7 @@
 
 #include "board_detect.h"
 
-#if defined(CONFIG_DM_I2C_COMPAT)
-/**
- * ti_i2c_set_alen - Set chip's i2c address length
- * @bus_addr - I2C bus number
- * @dev_addr - I2C eeprom id
- * @alen     - I2C address length in bytes
- *
- * DM_I2C by default sets the address length to be used to 1. This
- * function allows this address length to be changed to match the
- * eeprom used for board detection.
- */
-int __maybe_unused ti_i2c_set_alen(int bus_addr, int dev_addr, int alen)
-{
-	struct udevice *dev;
-	struct udevice *bus;
-	int rc;
-
-	rc = uclass_get_device_by_seq(UCLASS_I2C, bus_addr, &bus);
-	if (rc)
-		return rc;
-	rc = i2c_get_chip(bus, dev_addr, 1, &dev);
-	if (rc)
-		return rc;
-	rc = i2c_set_chip_offset_len(dev, alen);
-	if (rc)
-		return rc;
-
-	return 0;
-}
-#else
-int __maybe_unused ti_i2c_set_alen(int bus_addr, int dev_addr, int alen)
-{
-	return 0;
-}
-#endif
-
+#if !defined(CONFIG_DM_I2C)
 /**
  * ti_i2c_eeprom_init - Initialize an i2c bus and probe for a device
  * @i2c_bus: i2c bus number to initialize
@@ -82,18 +47,9 @@ static int __maybe_unused ti_i2c_eeprom_init(int i2c_bus, int dev_addr)
 static int __maybe_unused ti_i2c_eeprom_read(int dev_addr, int offset,
 					     uchar *ep, int epsize)
 {
-	int bus_num, rc, alen;
-
-	bus_num = i2c_get_bus_num();
-
-	alen = 2;
-
-	rc = ti_i2c_set_alen(bus_num, dev_addr, alen);
-	if (rc)
-		return rc;
-
-	return i2c_read(dev_addr, offset, alen, ep, epsize);
+	return i2c_read(dev_addr, offset, 2, ep, epsize);
 }
+#endif
 
 /**
  * ti_eeprom_string_cleanup() - Handle eeprom programming errors
@@ -122,23 +78,67 @@ __weak void gpi2c_init(void)
 static int __maybe_unused ti_i2c_eeprom_get(int bus_addr, int dev_addr,
 					    u32 header, u32 size, uint8_t *ep)
 {
-	u32 byte, hdr_read;
+	u32 hdr_read;
 	int rc;
 
-	gpi2c_init();
-	rc = ti_i2c_eeprom_init(bus_addr, dev_addr);
+#if defined(CONFIG_DM_I2C)
+	struct udevice *dev;
+	struct udevice *bus;
+
+	rc = uclass_get_device_by_seq(UCLASS_I2C, bus_addr, &bus);
+	if (rc)
+		return rc;
+	rc = i2c_get_chip(bus, dev_addr, 1, &dev);
 	if (rc)
 		return rc;
 
 	/*
 	 * Read the header first then only read the other contents.
 	 */
-	byte = 2;
+	rc = i2c_set_chip_offset_len(dev, 2);
+	if (rc)
+		return rc;
+
+	rc = dm_i2c_read(dev, 0, (uint8_t *)&hdr_read, 4);
+	if (rc)
+		return rc;
+
+	/* Corrupted data??? */
+	if (hdr_read != header) {
+		rc = dm_i2c_read(dev, 0, (uint8_t *)&hdr_read, 4);
+		/*
+		 * read the eeprom header using i2c again, but use only a
+		 * 1 byte address (some legacy boards need this..)
+		 */
+		if (rc) {
+			rc =  i2c_set_chip_offset_len(dev, 1);
+			if (rc)
+				return rc;
+
+			rc = dm_i2c_read(dev, 0, (uint8_t *)&hdr_read, 4);
+		}
+		if (rc)
+			return rc;
+	}
+	if (hdr_read != header)
+		return -1;
+
+	rc = dm_i2c_read(dev, 0, ep, size);
+	if (rc)
+		return rc;
+#else
+	u32 byte;
 
-	rc = ti_i2c_set_alen(bus_addr, dev_addr, byte);
+	gpi2c_init();
+	rc = ti_i2c_eeprom_init(bus_addr, dev_addr);
 	if (rc)
 		return rc;
 
+	/*
+	 * Read the header first then only read the other contents.
+	 */
+	byte = 2;
+
 	rc = i2c_read(dev_addr, 0x0, byte, (uint8_t *)&hdr_read, 4);
 	if (rc)
 		return rc;
@@ -152,10 +152,6 @@ static int __maybe_unused ti_i2c_eeprom_get(int bus_addr, int dev_addr,
 		 */
 		byte = 1;
 		if (rc) {
-			rc = ti_i2c_set_alen(bus_addr, dev_addr, byte);
-			if (rc)
-				return rc;
-
 			rc = i2c_read(dev_addr, 0x0, byte, (uint8_t *)&hdr_read,
 				      4);
 		}
@@ -168,7 +164,7 @@ static int __maybe_unused ti_i2c_eeprom_get(int bus_addr, int dev_addr,
 	rc = i2c_read(dev_addr, 0x0, byte, ep, size);
 	if (rc)
 		return rc;
-
+#endif
 	return 0;
 }
 

board/ti/ks2_evm/board_k2g.c

@@ -251,6 +251,7 @@ int board_fit_config_name_match(const char *name)
 #if defined(CONFIG_DTB_RESELECT)
 static int k2g_alt_board_detect(void)
 {
+#ifndef CONFIG_DM_I2C
 	int rc;
 
 	rc = i2c_set_bus_num(1);
@@ -260,7 +261,17 @@ static int k2g_alt_board_detect(void)
 	rc = i2c_probe(K2G_GP_AUDIO_CODEC_ADDRESS);
 	if (rc)
 		return rc;
+#else
+	struct udevice *bus, *dev;
+	int rc;
 
+	rc = uclass_get_device_by_seq(UCLASS_I2C, 1, &bus);
+	if (rc)
+		return rc;
+	rc = dm_i2c_probe(bus, K2G_GP_AUDIO_CODEC_ADDRESS, 0, &dev);
+	if (rc)
+		return rc;
+#endif
 	ti_i2c_eeprom_am_set("66AK2GGP", "1.0X");
 
 	return 0;

cmd/Kconfig

@@ -445,6 +445,7 @@ config CRC32_VERIFY
 
 config CMD_EEPROM
 	bool "eeprom - EEPROM subsystem"
+	depends on !DM_I2C || DM_I2C_COMPAT
 	help
 	  (deprecated, needs conversion to driver model)
 	  Provides commands to read and write EEPROM (Electrically Erasable

cmd/i2c.c

@@ -2023,6 +2023,7 @@ static int do_i2c(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 static char i2c_help_text[] =
 #if defined(CONFIG_SYS_I2C) || defined(CONFIG_DM_I2C)
 	"bus [muxtype:muxaddr:muxchannel] - show I2C bus info\n"
+	"i2c " /* That's the prefix for the crc32 command below. */
 #endif
 	"crc32 chip address[.0, .1, .2] count - compute CRC32 checksum\n"
 #if defined(CONFIG_SYS_I2C) || \

configs/am335x_pdu001_defconfig

@@ -36,6 +36,7 @@ CONFIG_OF_EMBED=y
 CONFIG_DEFAULT_DEVICE_TREE="am335x-pdu001"
 # CONFIG_NET is not set
 CONFIG_SPL_DM=y
+CONFIG_SPL_DM_SEQ_ALIAS=y
 CONFIG_DM_GPIO=y
 CONFIG_DM_I2C=y
 CONFIG_BLK=y

configs/am57xx_evm_defconfig

@@ -37,6 +37,7 @@ CONFIG_ENV_IS_IN_MMC=y
 CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
 CONFIG_DM=y
 CONFIG_SPL_DM=y
+CONFIG_SPL_DM_SEQ_ALIAS=y
 CONFIG_SCSI_AHCI=y
 # CONFIG_BLK is not set
 CONFIG_DFU_MMC=y

configs/am57xx_hs_evm_defconfig

@@ -40,6 +40,7 @@ CONFIG_ENV_IS_IN_MMC=y
 CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
 CONFIG_DM=y
 CONFIG_SPL_DM=y
+CONFIG_SPL_DM_SEQ_ALIAS=y
 CONFIG_SCSI_AHCI=y
 # CONFIG_BLK is not set
 CONFIG_DFU_MMC=y

configs/dra7xx_evm_defconfig

 CONFIG_ARM=y
 CONFIG_ARCH_OMAP2PLUS=y
 CONFIG_TI_COMMON_CMD_OPTIONS=y
-CONFIG_SYS_MALLOC_F_LEN=0x2000
+CONFIG_SYS_MALLOC_F_LEN=0x18000
 CONFIG_OMAP54XX=y
 CONFIG_TARGET_DRA7XX_EVM=y
 CONFIG_SPL=y
@@ -34,11 +34,13 @@ CONFIG_SPL_OF_CONTROL=y
 CONFIG_DEFAULT_DEVICE_TREE="dra7-evm"
 CONFIG_OF_LIST="dra7-evm dra72-evm dra72-evm-revc dra71-evm dra76-evm"
 CONFIG_SPL_MULTI_DTB_FIT=y
+CONFIG_SPL_MULTI_DTB_FIT_UNCOMPRESS_SZ=0x9000
 CONFIG_OF_SPL_REMOVE_PROPS="clocks clock-names interrupt-parent"
 CONFIG_ENV_IS_IN_MMC=y
 CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
 CONFIG_DM=y
 CONFIG_SPL_DM=y
+CONFIG_SPL_DM_DEVICE_REMOVE=y
 CONFIG_SPL_DM_SEQ_ALIAS=y
 CONFIG_SPL_REGMAP=y
 CONFIG_SPL_SYSCON=y

configs/dra7xx_hs_evm_defconfig

@@ -41,6 +41,7 @@ CONFIG_ENV_IS_IN_MMC=y
 CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
 CONFIG_DM=y
 CONFIG_SPL_DM=y
+CONFIG_SPL_DM_SEQ_ALIAS=y
 CONFIG_SPL_REGMAP=y
 CONFIG_SPL_SYSCON=y
 CONFIG_DWC_AHCI=y

configs/omap3_logic_defconfig

@@ -34,6 +34,7 @@ CONFIG_DEFAULT_DEVICE_TREE="logicpd-torpedo-37xx-devkit"
 # CONFIG_ENV_IS_IN_FAT is not set
 CONFIG_ENV_IS_IN_NAND=y
 CONFIG_SPL_DM=y
+CONFIG_SPL_DM_SEQ_ALIAS=y
 CONFIG_USB_FUNCTION_FASTBOOT=y
 CONFIG_FASTBOOT_BUF_ADDR=0x82000000
 CONFIG_DM_I2C=y

doc/README.fdt-control

@@ -184,6 +184,24 @@ The full device tree is available to U-Boot proper, but normally only a subset
 'SPL Support' in doc/driver-model/README.txt for more details.
 
 
+Using several DTBs in the SPL (CONFIG_SPL_MULTI_DTB)
+----------------------------------------------------
+In some rare cases it is desirable to let SPL be able to select one DTB among
+many. This usually not very useful as the DTB for the SPL is small and usually
+fits several platforms. However the DTB sometimes include information that do
+work on several platforms (like IO tuning parameters).
+In this case it is possible to use CONFIG_SPL_MULTI_DTB. This option appends to
+the SPL a FIT image containing several DTBs listed in SPL_OF_LIST.
+board_fit_config_name_match() is called to select the right DTB.
+
+If board_fit_config_name_match() relies on DM (DM driver to access an EEPROM
+containing the board ID for example), it possible to start with a generic DTB
+and then switch over to the right DTB after the detection. For this purpose,
+the platform code must call fdtdec_resetup(). Based on the returned flag, the
+platform may have to re-initiliaze the DM subusystem using dm_uninit() and
+dm_init_and_scan().
+
+
 Limitations
 -----------
 

drivers/core/Kconfig

@@ -57,13 +57,21 @@ config DM_DEVICE_REMOVE
 	default y
 	help
 	  We can save some code space by dropping support for removing a
-	  device. This is not normally required in SPL, so by default this
-	  option is disabled for SPL.
+	  device.
 
 	  Note that this may have undesirable results in the USB subsystem as
 	  it causes unplugged devices to linger around in the dm-tree, and it
 	  causes USB host controllers to not be stopped when booting the OS.
 
+config SPL_DM_DEVICE_REMOVE
+	bool "Support device removal in SPL"
+	depends on SPL_DM
+	default n
+	help
+	  We can save some code space by dropping support for removing a
+	  device. This is not normally required in SPL, so by default this
+	  option is disabled for SPL.
+
 config DM_STDIO
 	bool "Support stdio registration"
 	depends on DM

drivers/core/device.c

@@ -70,7 +70,8 @@ static int device_bind_common(struct udevice *parent, const struct driver *drv,
 
 	dev->seq = -1;
 	dev->req_seq = -1;
-	if (CONFIG_IS_ENABLED(OF_CONTROL) && CONFIG_IS_ENABLED(DM_SEQ_ALIAS)) {
+	if (CONFIG_IS_ENABLED(DM_SEQ_ALIAS) &&
+	    (uc->uc_drv->flags & DM_UC_FLAG_SEQ_ALIAS)) {
 		/*
 		 * Some devices, such as a SPI bus, I2C bus and serial ports
 		 * are numbered using aliases.
@@ -78,10 +79,11 @@ static int device_bind_common(struct udevice *parent, const struct driver *drv,
 		 * This is just a 'requested' sequence, and will be
 		 * resolved (and ->seq updated) when the device is probed.
 		 */
-		if (uc->uc_drv->flags & DM_UC_FLAG_SEQ_ALIAS) {
-			if (uc->uc_drv->name && ofnode_valid(node)) {
+		if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) {
+			if (uc->uc_drv->name && ofnode_valid(node))
 				dev_read_alias_seq(dev, &dev->req_seq);
-			}
+		} else {
+			dev->req_seq = uclass_find_next_free_req_seq(drv->id);
 		}
 	}
 

drivers/core/root.c

@@ -187,6 +187,7 @@ int dm_uninit(void)
 {
 	device_remove(dm_root(), DM_REMOVE_NORMAL);
 	device_unbind(dm_root());
+	gd->dm_root = NULL;
 
 	return 0;
 }

drivers/core/uclass.c

@@ -269,6 +269,30 @@ int uclass_find_device_by_name(enum uclass_id id, const char *name,
 	return -ENODEV;
 }
 
+#if !CONFIG_IS_ENABLED(OF_CONTROL) || CONFIG_IS_ENABLED(OF_PLATDATA)
+int uclass_find_next_free_req_seq(enum uclass_id id)
+{
+	struct uclass *uc;
+	struct udevice *dev;
+	int ret;
+	int max = -1;
+
+	ret = uclass_get(id, &uc);
+	if (ret)
+		return ret;
+
+	list_for_each_entry(dev, &uc->dev_head, uclass_node) {
+		if ((dev->req_seq != -1) && (dev->req_seq > max))
+			max = dev->req_seq;
+	}
+
+	if (max == -1)
+		return 0;
+
+	return max + 1;
+}
+#endif
+
 int uclass_find_device_by_seq(enum uclass_id id, int seq_or_req_seq,
 			      bool find_req_seq, struct udevice **devp)
 {

drivers/i2c/i2c-uclass.c

@@ -347,6 +347,17 @@ int i2c_get_chip_for_busnum(int busnum, int chip_addr, uint offset_len,
 		debug("Cannot find I2C bus %d\n", busnum);
 		return ret;
 	}
+
+	/* detect the presence of the chip on the bus */
+	ret = i2c_probe_chip(bus, chip_addr, 0);
+	debug("%s: bus='%s', address %02x, ret=%d\n", __func__, bus->name,
+	      chip_addr, ret);
+	if (ret) {
+		debug("Cannot detect I2C chip %02x on bus %d\n", chip_addr,
+		      busnum);
+		return ret;
+	}
+
 	ret = i2c_get_chip(bus, chip_addr, offset_len, devp);
 	if (ret) {
 		debug("Cannot find I2C chip %02x on bus %d\n", chip_addr,

drivers/power/palmas.c

@@ -175,3 +175,42 @@ int twl603x_enable_bb_charge(u8 bb_fields)
 		       val, err);
 	return err;
 }
+
+#ifdef CONFIG_DM_I2C
+int palmas_i2c_write_u8(u8 chip_no, u8 reg, u8 val)
+{
+	struct udevice *dev;
+	int ret;
+
+	ret = i2c_get_chip_for_busnum(0, chip_no, 1, &dev);
+	if (ret) {
+		pr_err("unable to get I2C bus. ret %d\n", ret);
+		return ret;
+	}
+	ret = dm_i2c_reg_write(dev, reg, val);
+	if (ret) {
+		pr_err("writing to palmas failed. ret %d\n", ret);
+		return ret;
+	}
+	return 0;
+}
+
+int palmas_i2c_read_u8(u8 chip_no, u8 reg, u8 *valp)
+{
+	struct udevice *dev;
+	int ret;
+
+	ret = i2c_get_chip_for_busnum(0, chip_no, 1, &dev);
+	if (ret) {
+		pr_err("unable to get I2C bus. ret %d\n", ret);
+		return ret;
+	}
+	ret = dm_i2c_reg_read(dev, reg);
+	if (ret < 0) {
+		pr_err("reading from palmas failed. ret %d\n", ret);
+		return ret;
+	}
+	*valp = (u8)ret;
+	return 0;
+}
+#endif

drivers/power/pmic/pmic_tps62362.c

@@ -10,6 +10,10 @@
 #include <power/pmic.h>
 #include <power/tps62362.h>
 
+#ifdef CONFIG_DM_I2C
+struct udevice *tps62362_dev __attribute__((section(".data"))) = NULL;
+#endif
+
 /**
  * tps62362_voltage_update() - Function to change a voltage level, as this
  *			       is a multi-step process.
@@ -22,9 +26,16 @@ int tps62362_voltage_update(unsigned char reg, unsigned char volt_sel)
 	if (reg > TPS62362_NUM_REGS)
 		return 1;
 
+#ifndef CONFIG_DM_I2C
 	return i2c_write(TPS62362_I2C_ADDR, reg, 1, &volt_sel, 1);
+#else
+	if (!tps62362_dev)
+		return -ENODEV;
+	return dm_i2c_reg_write(tps62362_dev, reg, volt_sel);
+#endif
 }
 
+#ifndef CONFIG_DM_I2C
 int power_tps62362_init(unsigned char bus)
 {
 	static const char name[] = "TPS62362";
@@ -44,3 +55,16 @@ int power_tps62362_init(unsigned char bus)
 
 	return 0;
 }
+#else
+int power_tps62362_init(unsigned char bus)
+{
+	struct udevice *dev = NULL;
+	int rc;
+
+	rc = i2c_get_chip_for_busnum(bus, TPS62362_I2C_ADDR, 1, &dev);
+	if (rc)
+		return rc;
+	tps62362_dev = dev;
+	return 0;
+}
+#endif

drivers/power/pmic/pmic_tps65217.c

@@ -8,6 +8,8 @@
 #include <i2c.h>
 #include <power/tps65217.h>
 
+struct udevice *tps65217_dev __attribute__((section(".data"))) = NULL;
+
 /**
  * tps65217_reg_read() - Generic function that can read a TPS65217 register
  * @src_reg:		 Source register address
@@ -16,7 +18,11 @@
  */
 int tps65217_reg_read(uchar src_reg, uchar *src_val)
 {
+#ifndef CONFIG_DM_I2C
 	return i2c_read(TPS65217_CHIP_PM, src_reg, 1, src_val, 1);
+#else
+	return dm_i2c_read(tps65217_dev, src_reg,  src_val, 1);
+#endif
 }
 
 /**
@@ -46,9 +52,14 @@ int tps65217_reg_write(uchar prot_level, uchar dest_reg, uchar dest_val,
 	 * mask
 	 */
 	if (mask != TPS65217_MASK_ALL_BITS) {
+#ifndef CONFIG_DM_I2C
 		ret = i2c_read(TPS65217_CHIP_PM, dest_reg, 1, &read_val, 1);
+#else
+		ret = dm_i2c_read(tps65217_dev, dest_reg, &read_val, 1);
+#endif
 		if (ret)
 			return ret;
+
 		read_val &= (~mask);
 		read_val |= (dest_val & mask);
 		dest_val = read_val;
@@ -56,23 +67,40 @@ int tps65217_reg_write(uchar prot_level, uchar dest_reg, uchar dest_val,
 
 	if (prot_level > 0) {
 		xor_reg = dest_reg ^ TPS65217_PASSWORD_UNLOCK;
+#ifndef CONFIG_DM_I2C
 		ret = i2c_write(TPS65217_CHIP_PM, TPS65217_PASSWORD, 1,
 				&xor_reg, 1);
+#else
+		ret = dm_i2c_write(tps65217_dev, TPS65217_PASSWORD,
+				   &xor_reg, 1);
+#endif
 		if (ret)
 			return ret;
 	}
-
+#ifndef CONFIG_DM_I2C
 	ret = i2c_write(TPS65217_CHIP_PM, dest_reg, 1, &dest_val, 1);
+#else
+	ret = dm_i2c_write(tps65217_dev, dest_reg, &dest_val, 1);
+#endif
 	if (ret)
 		return ret;
 
 	if (prot_level == TPS65217_PROT_LEVEL_2) {
+#ifndef CONFIG_DM_I2C
 		ret = i2c_write(TPS65217_CHIP_PM, TPS65217_PASSWORD, 1,
 				&xor_reg, 1);
+#else
+		ret = dm_i2c_write(tps65217_dev, TPS65217_PASSWORD,
+				   &xor_reg, 1);
+#endif
 		if (ret)
 			return ret;
 
+#ifndef CONFIG_DM_I2C
 		ret = i2c_write(TPS65217_CHIP_PM, dest_reg, 1, &dest_val, 1);
+#else
+		ret = dm_i2c_write(tps65217_dev, dest_reg, &dest_val, 1);
+#endif
 		if (ret)
 			return ret;
 	}
@@ -106,3 +134,17 @@ int tps65217_voltage_update(uchar dc_cntrl_reg, uchar volt_sel)
 
 	return 0;
 }
+
+int power_tps65217_init(unsigned char bus)
+{
+#ifdef CONFIG_DM_I2C
+	struct udevice *dev = NULL;
+	int rc;
+
+	rc = i2c_get_chip_for_busnum(bus, TPS65217_CHIP_PM, 1, &dev);
+	if (rc)
+		return rc;
+	tps65217_dev = dev;
+#endif
+	return 0;
+}

drivers/power/pmic/pmic_tps65218.c

@@ -10,6 +10,7 @@
 #include <power/pmic.h>
 #include <power/tps65218.h>
 
+#ifndef CONFIG_DM_I2C
 int tps65218_reg_read(uchar dest_reg, uchar *dest_val)
 {
 	uchar read_val;
@@ -84,6 +85,76 @@ int tps65218_reg_write(uchar prot_level, uchar dest_reg, uchar dest_val,
 
 	return 0;
 }
+#else
+struct udevice *tps65218_dev __attribute__((section(".data"))) = NULL;
+
+int tps65218_reg_read(uchar dest_reg, uchar *dest_val)
+{
+	uchar read_val;
+	int ret;
+
+	if (!tps65218_dev)
+		return -ENODEV;
+
+	ret = dm_i2c_read(tps65218_dev, dest_reg,  &read_val, 1);
+	if (ret)
+		return ret;
+
+	*dest_val = read_val;
+
+	return 0;
+}
+
+int tps65218_reg_write(uchar prot_level, uchar dest_reg, uchar dest_val,
+		       uchar mask)
+{
+	uchar read_val;
+	uchar xor_reg;
+	int ret;
+
+	if (!tps65218_dev)
+		return -ENODEV;
+
+	/*
+	 * If we are affecting only a bit field, read dest_reg and apply the
+	 * mask
+	 */
+	if (mask != TPS65218_MASK_ALL_BITS) {
+		ret = dm_i2c_read(tps65218_dev, dest_reg, &read_val, 1);
+		if (ret)
+			return ret;
+
+		read_val &= (~mask);
+		read_val |= (dest_val & mask);
+		dest_val = read_val;
+	}
+
+	if (prot_level > 0) {
+		xor_reg = dest_reg ^ TPS65218_PASSWORD_UNLOCK;
+		ret = dm_i2c_write(tps65218_dev, TPS65218_PASSWORD, &xor_reg,
+				   1);
+		if (ret)
+			return ret;
+	}
+
+	ret = dm_i2c_write(tps65218_dev, dest_reg, &dest_val, 1);
+	if (ret)
+		return ret;
+
+	if (prot_level == TPS65218_PROT_LEVEL_2) {
+		ret = dm_i2c_write(tps65218_dev, TPS65218_PASSWORD, &xor_reg,
+				   1);
+		if (ret)
+			return ret;
+
+		ret = dm_i2c_write(tps65218_dev, dest_reg, &dest_val, 1);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+#endif
 
 /**
  * tps65218_voltage_update() - Function to change a voltage level, as this
@@ -154,6 +225,7 @@ int tps65218_lock_fseal(void)
 	return 0;
 }
 
+#ifndef CONFIG_DM_I2C
 int power_tps65218_init(unsigned char bus)
 {
 	static const char name[] = "TPS65218_PMIC";
@@ -173,3 +245,16 @@ int power_tps65218_init(unsigned char bus)
 
 	return 0;
 }
+#else
+int power_tps65218_init(unsigned char bus)
+{
+	struct udevice *dev = NULL;
+	int rc;
+
+	rc = i2c_get_chip_for_busnum(bus, TPS65218_CHIP_PM, 1, &dev);
+	if (rc)
+		return rc;
+	tps65218_dev = dev;
+	return 0;
+}
+#endif

drivers/power/pmic/pmic_tps65910.c

@@ -8,6 +8,47 @@
 #include <i2c.h>
 #include <power/tps65910.h>
 
+struct udevice *tps65910_dev __attribute__((section(".data"))) = NULL;
+
+static inline int tps65910_read_reg(int addr, uchar *buf)
+{
+#ifndef CONFIG_DM_I2C
+	return i2c_read(TPS65910_CTRL_I2C_ADDR, addr, 1, buf, 1);
+#else
+	int rc;
+
+	rc = dm_i2c_reg_read(tps65910_dev, addr);
+	if (rc < 0)
+		return rc;
+	*buf = (uchar)rc;
+	return 0;
+#endif
+}
+
+static inline int tps65910_write_reg(int addr, uchar *buf)
+{
+#ifndef CONFIG_DM_I2C
+	return i2c_write(TPS65910_CTRL_I2C_ADDR, addr, 1, buf, 1);
+#else
+	return dm_i2c_reg_write(tps65910_dev, addr, *buf);
+#endif
+}
+
+int power_tps65910_init(unsigned char bus)
+{
+#ifdef CONFIG_DM_I2C
+	struct udevice *dev = NULL;
+	int rc;
+
+	rc = i2c_get_chip_for_busnum(bus, TPS65910_CTRL_I2C_ADDR, 1, &dev);
+
+	if (rc)
+		return rc;
+	tps65910_dev = dev;
+#endif
+	return 0;
+}
+
 /*
  * tps65910_set_i2c_control() - Set the TPS65910 to be controlled via the I2C
  * 				interface.
@@ -19,16 +60,14 @@ int tps65910_set_i2c_control(void)
 	uchar buf;
 
 	/* VDD1/2 voltage selection register access by control i/f */
-	ret = i2c_read(TPS65910_CTRL_I2C_ADDR, TPS65910_DEVCTRL_REG, 1,
-		       &buf, 1);
+	ret = tps65910_read_reg(TPS65910_DEVCTRL_REG, &buf);
 
 	if (ret)
 		return ret;
 
 	buf |= TPS65910_DEVCTRL_REG_SR_CTL_I2C_SEL_CTL_I2C;
 
-	return i2c_write(TPS65910_CTRL_I2C_ADDR, TPS65910_DEVCTRL_REG, 1,
-			 &buf, 1);
+	return tps65910_write_reg(TPS65910_DEVCTRL_REG, &buf);
 }
 
 /*
@@ -49,29 +88,29 @@ int tps65910_voltage_update(unsigned int module, unsigned char vddx_op_vol_sel)
 		reg_offset = TPS65910_VDD2_OP_REG;
 
 	/* Select VDDx OP   */
-	ret = i2c_read(TPS65910_CTRL_I2C_ADDR, reg_offset, 1, &buf, 1);
+	ret = tps65910_read_reg(reg_offset, &buf);
 	if (ret)
 		return ret;
 
 	buf &= ~TPS65910_OP_REG_CMD_MASK;
 
-	ret = i2c_write(TPS65910_CTRL_I2C_ADDR, reg_offset, 1, &buf, 1);
+	ret = tps65910_write_reg(reg_offset, &buf);
 	if (ret)
 		return ret;
 
 	/* Configure VDDx OP  Voltage */
-	ret = i2c_read(TPS65910_CTRL_I2C_ADDR, reg_offset, 1, &buf, 1);
+	ret = tps65910_read_reg(reg_offset, &buf);
 	if (ret)
 		return ret;
 
 	buf &= ~TPS65910_OP_REG_SEL_MASK;
 	buf |= vddx_op_vol_sel;
 
-	ret = i2c_write(TPS65910_CTRL_I2C_ADDR, reg_offset, 1, &buf, 1);
+	ret = tps65910_write_reg(reg_offset, &buf);
 	if (ret)
 		return ret;
 
-	ret = i2c_read(TPS65910_CTRL_I2C_ADDR, reg_offset, 1, &buf, 1);
+	ret = tps65910_read_reg(reg_offset, &buf);
 	if (ret)
 		return ret;
 

drivers/power/twl4030.c

@@ -179,3 +179,42 @@ int do_poweroff(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 	return 0;
 }
 #endif
+
+#ifdef CONFIG_DM_I2C
+int twl4030_i2c_write_u8(u8 chip_no, u8 reg, u8 val)
+{
+	struct udevice *dev;
+	int ret;
+
+	ret = i2c_get_chip_for_busnum(0, chip_no, 1, &dev);
+	if (ret) {
+		pr_err("unable to get I2C bus. ret %d\n", ret);
+		return ret;
+	}
+	ret = dm_i2c_reg_write(dev, reg, val);
+	if (ret) {
+		pr_err("writing to twl4030 failed. ret %d\n", ret);
+		return ret;
+	}
+	return 0;
+}
+
+int twl4030_i2c_read_u8(u8 chip_no, u8 reg, u8 *valp)
+{
+	struct udevice *dev;
+	int ret;
+
+	ret = i2c_get_chip_for_busnum(0, chip_no, 1, &dev);
+	if (ret) {
+		pr_err("unable to get I2C bus. ret %d\n", ret);
+		return ret;
+	}
+	ret = dm_i2c_reg_read(dev, reg);
+	if (ret < 0) {
+		pr_err("reading from twl4030 failed. ret %d\n", ret);
+		return ret;
+	}
+	*valp = (u8)ret;
+	return 0;
+}
+#endif

drivers/power/twl6030.c

@@ -268,3 +268,42 @@ void twl6030_usb_device_settings()
 	value &= ~TWL6030_MISC2_VUSB_IN_PMID;
 	twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_MISC2, value);
 }
+
+#ifdef CONFIG_DM_I2C
+int twl6030_i2c_write_u8(u8 chip_no, u8 reg, u8 val)
+{
+	struct udevice *dev;
+	int ret;
+
+	ret = i2c_get_chip_for_busnum(0, chip_no, 1, &dev);
+	if (ret) {
+		pr_err("unable to get I2C bus. ret %d\n", ret);
+		return ret;
+	}
+	ret = dm_i2c_reg_write(dev, reg, val);
+	if (ret) {
+		pr_err("writing to twl6030 failed. ret %d\n", ret);
+		return ret;
+	}
+	return 0;
+}
+
+int twl6030_i2c_read_u8(u8 chip_no, u8 reg, u8 *valp)
+{
+	struct udevice *dev;
+	int ret;
+
+	ret = i2c_get_chip_for_busnum(0, chip_no, 1, &dev);
+	if (ret) {
+		pr_err("unable to get I2C bus. ret %d\n", ret);
+		return ret;
+	}
+	ret = dm_i2c_reg_read(dev, reg);
+	if (ret < 0) {
+		pr_err("reading from twl6030 failed. ret %d\n", ret);
+		return ret;
+	}
+	*valp = (u8)ret;
+	return 0;
+}
+#endif

include/asm-generic/global_data.h

@@ -77,6 +77,10 @@ typedef struct global_data {
 #ifdef CONFIG_OF_LIVE
 	struct device_node *of_root;
 #endif
+
+#if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
+	const void *multi_dtb_fit;	/* uncompressed multi-dtb FIT image */
+#endif
 	struct jt_funcs *jt;		/* jump table */
 	char env_buf[32];		/* buffer for env_get() before reloc. */
 #ifdef CONFIG_TRACE

include/configs/am43xx_evm.h

@@ -27,8 +27,10 @@
 #define CONFIG_SYS_I2C_EEPROM_ADDR_LEN	2
 
 /* Power */
+#ifndef CONFIG_DM_I2C
 #define CONFIG_POWER
 #define CONFIG_POWER_I2C
+#endif
 #define CONFIG_POWER_TPS65218
 #define CONFIG_POWER_TPS62362
 

include/configs/pdu001.h

@@ -12,12 +12,6 @@
 
 #include <configs/ti_am335x_common.h>
 
-/* No more need for I2C legacy compatibility for this board.
- * CONFIG_DM_I2C_COMPAT is defined in ti_armv7_common.h. See the comment there
- * for the right moment to delete the following line.
- */
-#undef CONFIG_DM_I2C_COMPAT
-
 /* Using 32K of volatile storage for environment */
 #define CONFIG_ENV_SIZE		0x4000
 

include/configs/ti_armv7_common.h

@@ -74,24 +74,10 @@
 /* Timer information. */
 #define CONFIG_SYS_PTV			2	/* Divisor: 2^(PTV+1) => 8 */
 
-/*
- * Disable DM_* for SPL build and can be re-enabled after adding
- * DM support in SPL
- */
-#ifdef CONFIG_SPL_BUILD
-#undef CONFIG_DM_I2C
-#endif
-
-/* I2C IP block */
+/* If DM_I2C, enable non-DM I2C support */
+#if !defined(CONFIG_DM_I2C)
 #define CONFIG_I2C
-#ifndef CONFIG_DM_I2C
 #define CONFIG_SYS_I2C
-#else
-/*
- * Enable CONFIG_DM_I2C_COMPAT temporarily until all the i2c client
- * devices are adopted to DM
- */
-#define CONFIG_DM_I2C_COMPAT
 #endif
 
 /*

include/dm/uclass-internal.h

@@ -11,6 +11,19 @@
 
 #include <dm/ofnode.h>
 
+/**
+ * uclass_find_next_free_req_seq() - Get the next free req_seq number
+ *
+ * This returns the next free req_seq number. This is useful only if
+ * OF_CONTROL is not used. The next free req_seq number is simply the
+ * maximum req_seq of the uclass + 1.
+ * This allows assiging req_seq number in the binding order.
+ *
+ * @id:		Id number of the uclass
+ * @return	The next free req_seq number
+ */
+int uclass_find_next_free_req_seq(enum uclass_id id);
+
 /**
  * uclass_get_device_tail() - handle the end of a get_device call
  *

include/fdtdec.h

@@ -951,6 +951,27 @@ int fdtdec_setup_memory_banksize(void);
  */
 int fdtdec_setup(void);
 
+#if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
+/**
+ * fdtdec_resetup()  - Set up the device tree again
+ *
+ * The main difference with fdtdec_setup() is that it returns if the fdt has
+ * changed because a better match has been found.
+ * This is typically used for boards that rely on a DM driver to detect the
+ * board type. This function sould be called by the board code after the stuff
+ * needed by board_fit_config_name_match() to operate porperly is available.
+ * If this functions signals that a rescan is necessary, the board code must
+ * unbind all the drivers using dm_uninit() and then rescan the DT with
+ * dm_init_and_scan().
+ *
+ * @param rescan Returns a flag indicating that fdt has changed and rescanning
+ *               the fdt is required
+ *
+ * @return 0 if OK, -ve on error
+ */
+int fdtdec_resetup(int *rescan);
+#endif
+
 /**
  * Board-specific FDT initialization. Returns the address to a device tree blob.
  * Called when CONFIG_OF_BOARD is defined, or if CONFIG_OF_SEPARATE is defined

include/palmas.h

@@ -117,6 +117,7 @@
 #define BB_VSEL_VBAT		(3 << 1)
 #define BB_CHRG_EN		(1 << 0)
 
+#ifndef CONFIG_DM_I2C
 /*
  * Functions to read and write from TPS659038/TWL6035/TWL6037
  * or other Palmas family of TI PMICs
@@ -130,6 +131,10 @@ static inline int palmas_i2c_read_u8(u8 chip_no, u8 reg, u8 *val)
 {
 	return i2c_read(chip_no, reg, 1, val, 1);
 }
+#else
+int palmas_i2c_write_u8(u8 chip_no, u8 reg, u8 val);
+int palmas_i2c_read_u8(u8 chip_no, u8 reg, u8 *val);
+#endif
 
 void palmas_init_settings(void);
 int palmas_mmc1_poweron_ldo(uint ldo_volt, uint ldo_ctrl, uint voltage);

include/power/tps65217.h

@@ -80,6 +80,8 @@ enum {
 #define TPS65217_PWR_SRC_USB_BITMASK		0x4
 #define TPS65217_PWR_SRC_AC_BITMASK		0x8
 
+int power_tps65217_init(unsigned char bus);
+
 int tps65217_reg_read(uchar src_reg, uchar *src_val);
 int tps65217_reg_write(uchar prot_level, uchar dest_reg, uchar dest_val,
 		       uchar mask);

include/power/tps65910.h

@@ -72,6 +72,7 @@ enum {
 #define TPS65910_DEVCTRL_REG_SR_CTL_I2C_SEL_SR_I2C	(0x0 << 4)
 #define TPS65910_DEVCTRL_REG_SR_CTL_I2C_SEL_CTL_I2C	(0x1 << 4)
 
+int power_tps65910_init(unsigned char bus);
 int tps65910_set_i2c_control(void);
 int tps65910_voltage_update(unsigned int module, unsigned char vddx_op_vol_sel);
 #endif	/* __POWER_TPS65910_H__ */

include/twl4030.h

@@ -648,6 +648,7 @@
  *   examples are TWL4030_PM_RECEIVER_VMMC1_DEV_GRP and
  *   TWL4030_LED_LEDEN.
  */
+#ifndef CONFIG_DM_I2C
 static inline int twl4030_i2c_write_u8(u8 chip_no, u8 reg, u8 val)
 {
 	return i2c_write(chip_no, reg, 1, &val, 1);
@@ -657,7 +658,10 @@ static inline int twl4030_i2c_read_u8(u8 chip_no, u8 reg, u8 *val)
 {
 	return i2c_read(chip_no, reg, 1, val, 1);
 }
-
+#else
+int twl4030_i2c_write_u8(u8 chip_no, u8 reg, u8 val);
+int twl4030_i2c_read_u8(u8 chip_no, u8 reg, u8 *val);
+#endif
 /*
  * Power
  */

include/twl6030.h

@@ -186,6 +186,7 @@ struct twl6030_data{
 };
 
 /* Functions to read and write from TWL6030 */
+#ifndef CONFIG_DM_I2C
 static inline int twl6030_i2c_write_u8(u8 chip_no, u8 reg, u8 val)
 {
 	return i2c_write(chip_no, reg, 1, &val, 1);
@@ -195,6 +196,10 @@ static inline int twl6030_i2c_read_u8(u8 chip_no, u8 reg, u8 *val)
 {
 	return i2c_read(chip_no, reg, 1, val, 1);
 }
+#else
+int twl6030_i2c_write_u8(u8 chip_no, u8 reg, u8 val);
+int twl6030_i2c_read_u8(u8 chip_no, u8 reg, u8 *val);
+#endif
 
 /*
  * Power

lib/fdtdec.c

@@ -1275,14 +1275,55 @@ int fdtdec_setup(void)
 	 * If so, pick the most relevant
 	 */
 	fdt_blob = locate_dtb_in_fit(gd->fdt_blob);
-	if (fdt_blob)
+	if (fdt_blob) {
+		gd->multi_dtb_fit = gd->fdt_blob;
 		gd->fdt_blob = fdt_blob;
+	}
+
 # endif
 #endif
 
 	return fdtdec_prepare_fdt();
 }
 
+#if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
+int fdtdec_resetup(int *rescan)
+{
+	void *fdt_blob;
+
+	/*
+	 * If the current DTB is part of a compressed FIT image,
+	 * try to locate the best match from the uncompressed
+	 * FIT image stillpresent there. Save the time and space
+	 * required to uncompress it again.
+	 */
+	if (gd->multi_dtb_fit) {
+		fdt_blob = locate_dtb_in_fit(gd->multi_dtb_fit);
+
+		if (fdt_blob == gd->fdt_blob) {
+			/*
+			 * The best match did not change. no need to tear down
+			 * the DM and rescan the fdt.
+			 */
+			*rescan = 0;
+			return 0;
+		}
+
+		*rescan = 1;
+		gd->fdt_blob = fdt_blob;
+		return fdtdec_prepare_fdt();
+	}
+
+	/*
+	 * If multi_dtb_fit is NULL, it means that blob appended to u-boot is
+	 * not a FIT image containings DTB, but a single DTB. There is no need
+	 * to teard down DM and rescan the DT in this case.
+	 */
+	*rescan = 0;
+	return 0;
+}
+#endif
+
 #ifdef CONFIG_NR_DRAM_BANKS
 int fdtdec_decode_ram_size(const void *blob, const char *area, int board_id,
 			   phys_addr_t *basep, phys_size_t *sizep, bd_t *bd)