mx28evk: Convert to driver model

Make the conversion to driver model as it is mandatory.

Successfully tested booting Linux from the SD card.

Dropped support for networking and splash screen as these need
to be properly converted to DM and tested.

Signed-off-by: Fabio Estevam <festevam@gmail.com>

6 files changed, 26 insertions, 88 deletions

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index bec349f..e62f7fc 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -680,6 +680,7 @@ dtb-$(CONFIG_TARGET_MX23_OLINUXINO) += \
 	imx23-olinuxino.dtb
 
 dtb-$(CONFIG_MX28) += \
+	imx28-evk.dtb \
 	imx28-xea.dtb
 
 dtb-$(CONFIG_MX51) += \
diff --git a/arch/arm/dts/imx28-evk-u-boot.dtsi b/arch/arm/dts/imx28-evk-u-boot.dtsi
new file mode 100644
index 0000000..6adbae6
--- /dev/null
+++ b/arch/arm/dts/imx28-evk-u-boot.dtsi
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2019
+ * Lukasz Majewski, DENX Software Engineering, lukma@denx.de
+ *
+ * SPDX-License-Identifier:     GPL-2.0+ or X11
+ */
+
+#include "imx28-u-boot.dtsi"
+
diff --git a/board/freescale/mx28evk/MAINTAINERS b/board/freescale/mx28evk/MAINTAINERS
index 597118d..c565010 100644
--- a/board/freescale/mx28evk/MAINTAINERS
+++ b/board/freescale/mx28evk/MAINTAINERS
@@ -2,6 +2,7 @@ MX28EVK BOARD
 M:	Fabio Estevam <festevam@gmail.com>
 S:	Maintained
 F:	board/freescale/mx28evk/
+F:	arch/arm/dts/imx28-evk.dts
 F:	include/configs/mx28evk.h
 F:	configs/mx28evk_defconfig
 F:	configs/mx28evk_auart_console_defconfig
diff --git a/board/freescale/mx28evk/mx28evk.c b/board/freescale/mx28evk/mx28evk.c
index 21c9cb1..88c3bf3 100644
--- a/board/freescale/mx28evk/mx28evk.c
+++ b/board/freescale/mx28evk/mx28evk.c
@@ -72,80 +72,3 @@ int board_init(void)
 
 	return 0;
 }
-
-#ifdef	CONFIG_CMD_MMC
-static int mx28evk_mmc_wp(int id)
-{
-	if (id != 0) {
-		printf("MXS MMC: Invalid card selected (card id = %d)\n", id);
-		return 1;
-	}
-
-	return gpio_get_value(MX28_PAD_SSP1_SCK__GPIO_2_12);
-}
-
-int board_mmc_init(struct bd_info *bis)
-{
-	/* Configure WP as input */
-	gpio_direction_input(MX28_PAD_SSP1_SCK__GPIO_2_12);
-
-	/* Configure MMC0 Power Enable */
-	gpio_direction_output(MX28_PAD_PWM3__GPIO_3_28, 0);
-
-	return mxsmmc_initialize(bis, 0, mx28evk_mmc_wp, NULL);
-}
-#endif
-
-#ifdef	CONFIG_CMD_NET
-
-int board_eth_init(struct bd_info *bis)
-{
-	struct mxs_clkctrl_regs *clkctrl_regs =
-		(struct mxs_clkctrl_regs *)MXS_CLKCTRL_BASE;
-	struct eth_device *dev;
-	int ret;
-
-	ret = cpu_eth_init(bis);
-	if (ret)
-		return ret;
-
-	/* MX28EVK uses ENET_CLK PAD to drive FEC clock */
-	writel(CLKCTRL_ENET_TIME_SEL_RMII_CLK | CLKCTRL_ENET_CLK_OUT_EN,
-	       &clkctrl_regs->hw_clkctrl_enet);
-
-	/* Power-on FECs */
-	gpio_direction_output(MX28_PAD_SSP1_DATA3__GPIO_2_15, 0);
-
-	/* Reset FEC PHYs */
-	gpio_direction_output(MX28_PAD_ENET0_RX_CLK__GPIO_4_13, 0);
-	udelay(200);
-	gpio_set_value(MX28_PAD_ENET0_RX_CLK__GPIO_4_13, 1);
-
-	ret = fecmxc_initialize_multi(bis, 0, 0, MXS_ENET0_BASE);
-	if (ret) {
-		puts("FEC MXS: Unable to init FEC0\n");
-		return ret;
-	}
-
-	ret = fecmxc_initialize_multi(bis, 1, 3, MXS_ENET1_BASE);
-	if (ret) {
-		puts("FEC MXS: Unable to init FEC1\n");
-		return ret;
-	}
-
-	dev = eth_get_dev_by_name("FEC0");
-	if (!dev) {
-		puts("FEC MXS: Unable to get FEC0 device entry\n");
-		return -EINVAL;
-	}
-
-	dev = eth_get_dev_by_name("FEC1");
-	if (!dev) {
-		puts("FEC MXS: Unable to get FEC1 device entry\n");
-		return -EINVAL;
-	}
-
-	return ret;
-}
-
-#endif
diff --git a/configs/mx28evk_defconfig b/configs/mx28evk_defconfig
index 300ab08..3345ec6 100644
--- a/configs/mx28evk_defconfig
+++ b/configs/mx28evk_defconfig
@@ -7,10 +7,12 @@ 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_MX28EVK=y
 CONFIG_SPL_SERIAL_SUPPORT=y
 CONFIG_SPL=y
+CONFIG_DEFAULT_DEVICE_TREE="imx28-evk"
 CONFIG_FIT=y
 CONFIG_SYS_CONSOLE_IS_IN_ENV=y
 # CONFIG_DISPLAY_BOARDINFO is not set
@@ -18,13 +20,11 @@ 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_FLASH is not set
 CONFIG_CMD_GPIO=y
 CONFIG_CMD_MMC=y
 CONFIG_CMD_NAND_TRIMFFS=y
-CONFIG_CMD_DHCP=y
-CONFIG_CMD_MII=y
-CONFIG_CMD_PING=y
 CONFIG_CMD_CACHE=y
 CONFIG_CMD_DATE=y
 CONFIG_CMD_EXT4=y
@@ -35,18 +35,28 @@ CONFIG_CMD_MTDPARTS=y
 CONFIG_MTDIDS_DEFAULT="nand0=gpmi-nand"
 CONFIG_MTDPARTS_DEFAULT="mtdparts=gpmi-nand:3m(bootloader)ro,512k(environment),512k(redundant-environment),4m(kernel),512k(fdt),8m(ramdisk),-(filesystem)"
 CONFIG_CMD_UBI=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_SPL_DM=y
 CONFIG_MXS_GPIO=y
+CONFIG_DM_MMC=y
 CONFIG_MMC_MXS=y
 CONFIG_MTD=y
 CONFIG_MTD_RAW_NAND=y
 CONFIG_NAND_MXS=y
 CONFIG_MII=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_MXS=y
+CONFIG_DM_REGULATOR=y
+CONFIG_DM_REGULATOR_FIXED=y
+CONFIG_DM_REGULATOR_GPIO=y
 CONFIG_CONS_INDEX=0
 CONFIG_SPI=y
 CONFIG_USB=y
+CONFIG_DM_USB=y
 CONFIG_SPLASH_SCREEN=y
-CONFIG_OF_LIBFDT=y
diff --git a/include/configs/mx28evk.h b/include/configs/mx28evk.h
index a65df48..21f3277 100644
--- a/include/configs/mx28evk.h
+++ b/include/configs/mx28evk.h
@@ -31,13 +31,6 @@
 
 /* UBI and NAND partitioning */
 
-/* FEC Ethernet on SoC */
-#ifdef	CONFIG_CMD_NET
-#define CONFIG_FEC_MXC
-#define CONFIG_FEC_MXC_MDIO_BASE MXS_ENET0_BASE
-#define CONFIG_MX28_FEC_MAC_IN_OCOTP
-#endif
-
 /* RTC */
 #ifdef	CONFIG_CMD_DATE
 #define	CONFIG_RTC_MXS