ARM: liteboard: move towards driver model and device-tree boot

This patch mostly enables DM drivers in board defconfig and all their
dependencies. Additionally we remove USB code that is on longer
executed after enabling CONFIG_DM_USB. Enable CONFIG_PINCTRL, so we
can get rid of ethernet pin configuration.
Signed-off-by: NMarcin Niestroj <m.niestroj@grinn-global.com>

board/grinn/liteboard/board.c

@@ -24,8 +24,6 @@
 #include <mmc.h>
 #include <netdev.h>
 #include <spl.h>
-#include <usb.h>
-#include <usb/ehci-ci.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -63,26 +61,6 @@ static iomux_v3_cfg_t const sd_pads[] = {
 	MX6_PAD_UART1_RTS_B__GPIO1_IO19 | MUX_PAD_CTRL(NO_PAD_CTRL),
 };
 
-#ifdef CONFIG_FEC_MXC
-static iomux_v3_cfg_t const fec1_pads[] = {
-	MX6_PAD_GPIO1_IO06__ENET1_MDIO | MUX_PAD_CTRL(MDIO_PAD_CTRL),
-	MX6_PAD_GPIO1_IO07__ENET1_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL),
-	MX6_PAD_ENET1_TX_DATA0__ENET1_TDATA00 | MUX_PAD_CTRL(ENET_PAD_CTRL),
-	MX6_PAD_ENET1_TX_DATA1__ENET1_TDATA01 | MUX_PAD_CTRL(ENET_PAD_CTRL),
-	MX6_PAD_ENET1_TX_EN__ENET1_TX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL),
-	MX6_PAD_ENET1_TX_CLK__ENET1_REF_CLK1 | MUX_PAD_CTRL(ENET_CLK_PAD_CTRL),
-	MX6_PAD_ENET1_RX_DATA0__ENET1_RDATA00 | MUX_PAD_CTRL(ENET_PAD_CTRL),
-	MX6_PAD_ENET1_RX_DATA1__ENET1_RDATA01 | MUX_PAD_CTRL(ENET_PAD_CTRL),
-	MX6_PAD_ENET1_RX_ER__ENET1_RX_ER | MUX_PAD_CTRL(ENET_PAD_CTRL),
-	MX6_PAD_ENET1_RX_EN__ENET1_RX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL),
-};
-
-static void setup_iomux_fec(void)
-{
-	imx_iomux_v3_setup_multiple_pads(fec1_pads, ARRAY_SIZE(fec1_pads));
-}
-#endif
-
 static void setup_iomux_uart(void)
 {
 	imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
@@ -180,13 +158,6 @@ void board_late_mmc_init(void)
 #endif
 
 #ifdef CONFIG_FEC_MXC
-int board_eth_init(bd_t *bis)
-{
-	setup_iomux_fec();
-
-	return fecmxc_initialize(bis);
-}
-
 static int setup_fec(void)
 {
 	struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
@@ -207,13 +178,6 @@ static int setup_fec(void)
 }
 #endif
 
-#ifdef CONFIG_USB_EHCI_MX6
-int board_usb_phy_mode(int port)
-{
-	return USB_INIT_HOST;
-}
-#endif
-
 int board_early_init_f(void)
 {
 	setup_iomux_uart();

configs/liteboard_defconfig

@@ -30,10 +30,19 @@ CONFIG_CMD_EXT4=y
 CONFIG_CMD_EXT4_WRITE=y
 CONFIG_CMD_FAT=y
 CONFIG_CMD_FS_GENERIC=y
+CONFIG_OF_CONTROL=y
+CONFIG_DEFAULT_DEVICE_TREE="imx6ul-liteboard"
 CONFIG_ENV_IS_IN_MMC=y
+CONFIG_DM_GPIO=y
+CONFIG_DM_I2C=y
+CONFIG_DM_MMC=y
 CONFIG_FSL_ESDHC=y
 CONFIG_PHYLIB=y
+CONFIG_DM_ETH=y
 CONFIG_MII=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_IMX6=y
+CONFIG_DM_REGULATOR=y
 CONFIG_USB=y
+CONFIG_DM_USB=y
 CONFIG_USB_STORAGE=y
-CONFIG_OF_LIBFDT=y