mx23evk: Convert to driver model

Make the conversion to driver model as it is mandatory.

Successfully tested booting Linux from the SD card.

Dropped splash screen support as this needs to be properly
converted to DM and tested.
Signed-off-by: NFabio Estevam <festevam@gmail.com>

arch/arm/dts/Makefile

@@ -648,6 +648,9 @@ dtb-$(CONFIG_VF610) += vf500-colibri.dtb \
 	vf610-pcm052.dtb \
 	vf610-bk4r1.dtb
 
+dtb-$(CONFIG_MX23) += \
+	imx23-evk.dtb
+
 dtb-$(CONFIG_MX28) += \
 	imx28-xea.dtb
 

arch/arm/dts/imx23-evk-u-boot.dtsi

+// SPDX-License-Identifier: GPL-2.0+
+
+#include "imx23-u-boot.dtsi"
+

arch/arm/dts/imx23-u-boot.dtsi

+// SPDX-License-Identifier: GPL-2.0+
+
+&gpio0 {
+	gpio-ranges = <&pinctrl 0 0 32>;
+};
+
+&gpio1 {
+	gpio-ranges = <&pinctrl 0 32 31>;
+};
+
+&gpio2 {
+	gpio-ranges = <&pinctrl 0 63 32>;
+};
+

arch/arm/dts/imx23.dtsi

@@ -105,7 +105,7 @@
 				status = "disabled";
 			};
 
-			pinctrl@80018000 {
+			pinctrl: pinctrl@80018000 {
 				#address-cells = <1>;
 				#size-cells = <0>;
 				compatible = "fsl,imx23-pinctrl", "simple-bus";

board/freescale/mx23evk/mx23evk.c

@@ -54,26 +54,3 @@ int board_init(void)
 
 	return 0;
 }
-
-#ifdef	CONFIG_CMD_MMC
-static int mx23evk_mmc_wp(int id)
-{
-	if (id != 0) {
-		printf("MXS MMC: Invalid card selected (card id = %d)\n", id);
-		return 1;
-	}
-
-	return gpio_get_value(MX23_PAD_PWM4__GPIO_1_30);
-}
-
-int board_mmc_init(struct bd_info *bis)
-{
-	/* Configure WP as input */
-	gpio_direction_input(MX23_PAD_PWM4__GPIO_1_30);
-
-	/* Configure MMC0 Power Enable */
-	gpio_direction_output(MX23_PAD_PWM3__GPIO_1_29, 0);
-
-	return mxsmmc_initialize(bis, 0, mx23evk_mmc_wp, NULL);
-}
-#endif

configs/mx23evk_defconfig

@@ -7,16 +7,19 @@ CONFIG_SPL_LIBGENERIC_SUPPORT=y
 CONFIG_NR_DRAM_BANKS=1
 CONFIG_ENV_SIZE=0x4000
 CONFIG_ENV_OFFSET=0x40000
+CONFIG_DM_GPIO=y
 CONFIG_SPL_TEXT_BASE=0x00001000
 CONFIG_TARGET_MX23EVK=y
 CONFIG_SPL_SERIAL_SUPPORT=y
 CONFIG_SPL=y
+CONFIG_DEFAULT_DEVICE_TREE="imx23-evk"
 CONFIG_SYS_CONSOLE_IS_IN_ENV=y
 # CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_ARCH_MISC_INIT=y
 # CONFIG_SPL_FRAMEWORK is not set
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_BOOTZ=y
+CONFIG_CMD_DM=y
 CONFIG_CMD_GPIO=y
 CONFIG_CMD_MMC=y
 CONFIG_CMD_USB=y
@@ -24,17 +27,22 @@ CONFIG_CMD_USB=y
 CONFIG_CMD_CACHE=y
 CONFIG_CMD_EXT2=y
 CONFIG_CMD_FAT=y
+CONFIG_OF_CONTROL=y
 CONFIG_ENV_OVERWRITE=y
 CONFIG_ENV_IS_IN_MMC=y
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_VERSION_VARIABLE=y
 # CONFIG_NET is not set
+CONFIG_DM=y
 CONFIG_MXS_GPIO=y
+CONFIG_DM_MMC=y
 CONFIG_MMC_MXS=y
+CONFIG_PINCTRL=y
+CONFIG_DM_REGULATOR=y
+CONFIG_DM_REGULATOR_FIXED=y
+CONFIG_DM_REGULATOR_GPIO=y
 CONFIG_CONS_INDEX=0
 CONFIG_USB=y
+CONFIG_DM_USB=y
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_STORAGE=y
-CONFIG_SPLASH_SCREEN=y
-CONFIG_VIDEO_BMP_GZIP=y
-CONFIG_OF_LIBFDT=y