imx6: aristainetos: add DM_SERIAL support

add DM_SERIAL support for the aristainetos board, and
remove not used code from board code.

remove CONSOLE_OVERWRITE_ROUTINE.

Signed-off-by: Heiko Schocher <hs@denx.de>

arch/arm/mach-imx/mx6/Kconfig

@@ -132,7 +132,9 @@ config TARGET_ARISTAINETOS2
 	select SYS_I2C_MXC
 	select MXC_UART
 	select FEC_MXC
+	select DM
 	imply CMD_SATA
+	imply CMD_DM
 
 config TARGET_CGTQMX6EVAL
 	bool "cgtqmx6eval"

board/aristainetos/aristainetos.c

@@ -43,10 +43,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-#define UART_PAD_CTRL  (PAD_CTL_PUS_100K_UP |			\
-	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |			\
-	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
-
 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP |			\
 	PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |			\
 	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
@@ -117,30 +113,6 @@ struct i2c_pads_info i2c_pad_info4 = {
 	}
 };
 
-iomux_v3_cfg_t const uart1_pads[] = {
-	MX6_PAD_CSI0_DAT10__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
-	MX6_PAD_CSI0_DAT11__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
-	MX6_PAD_EIM_D19__UART1_CTS_B    | MUX_PAD_CTRL(UART_PAD_CTRL),
-	MX6_PAD_EIM_D20__UART1_RTS_B    | MUX_PAD_CTRL(UART_PAD_CTRL),
-};
-
-iomux_v3_cfg_t const uart2_pads[] = {
-	MX6_PAD_EIM_D26__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
-	MX6_PAD_EIM_D27__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
-};
-
-iomux_v3_cfg_t const uart3_pads[] = {
-	MX6_PAD_EIM_D24__UART3_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
-	MX6_PAD_EIM_D25__UART3_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
-	MX6_PAD_EIM_D31__UART3_RTS_B | MUX_PAD_CTRL(UART_PAD_CTRL),
-	MX6_PAD_EIM_D23__UART3_CTS_B | MUX_PAD_CTRL(UART_PAD_CTRL),
-};
-
-iomux_v3_cfg_t const uart4_pads[] = {
-	MX6_PAD_KEY_COL0__UART4_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
-	MX6_PAD_KEY_ROW0__UART4_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
-};
-
 iomux_v3_cfg_t const gpio_pads[] = {
 	/* LED enable*/
 	MX6_PAD_ENET_CRS_DV__GPIO1_IO25 | MUX_PAD_CTRL(NO_PAD_CTRL),
@@ -312,28 +284,6 @@ static void setup_spi(void)
 #endif
 }
 
-static void setup_iomux_uart(void)
-{
-	switch (CONFIG_MXC_UART_BASE) {
-	case UART1_BASE:
-		imx_iomux_v3_setup_multiple_pads(uart1_pads,
-						 ARRAY_SIZE(uart1_pads));
-		break;
-	case UART2_BASE:
-		imx_iomux_v3_setup_multiple_pads(uart2_pads,
-						 ARRAY_SIZE(uart2_pads));
-		break;
-	case UART3_BASE:
-		imx_iomux_v3_setup_multiple_pads(uart3_pads,
-						 ARRAY_SIZE(uart3_pads));
-		break;
-	case UART4_BASE:
-		imx_iomux_v3_setup_multiple_pads(uart4_pads,
-						 ARRAY_SIZE(uart4_pads));
-		break;
-	}
-}
-
 int board_phy_config(struct phy_device *phydev)
 {
 	/* control data pad skew - devaddr = 0x02, register = 0x04 */
@@ -629,7 +579,6 @@ static void set_gpr_register(void)
 extern char __bss_start[], __bss_end[];
 int board_early_init_f(void)
 {
-	setup_iomux_uart();
 	setup_iomux_gpio();
 
 	gpio_direction_output(SOFT_RESET_GPIO, 1);
@@ -808,15 +757,6 @@ int board_mmc_init(bd_t *bis)
 }
 #endif
 
-/*
- * Do not overwrite the console
- * Use always serial for U-Boot console
- */
-int overwrite_console(void)
-{
-	return 1;
-}
-
 struct display_info_t const displays[] = {
 	{
 		.bus	= -1,

configs/aristainetos2_defconfig

@@ -2,6 +2,7 @@ CONFIG_ARM=y
 CONFIG_SYS_THUMB_BUILD=y
 CONFIG_ARCH_MX6=y
 CONFIG_SYS_TEXT_BASE=0x17800000
+CONFIG_SYS_MALLOC_F_LEN=0xe000
 CONFIG_TARGET_ARISTAINETOS2=y
 CONFIG_ENV_SIZE=0x3000
 CONFIG_ENV_OFFSET=0xD0000
@@ -12,7 +13,6 @@ CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=board/aristainetos/aristainetos2.cfg"
 CONFIG_BOOTDELAY=3
 # CONFIG_CONSOLE_MUX is not set
 CONFIG_SYS_CONSOLE_IS_IN_ENV=y
-CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE=y
 CONFIG_SUPPORT_RAW_INITRD=y
 CONFIG_BOUNCE_BUFFER=y
 CONFIG_BOARD_TYPES=y
@@ -70,6 +70,7 @@ CONFIG_PHY_MICREL=y
 CONFIG_PHY_MICREL_KSZ90X1=y
 CONFIG_MII=y
 CONFIG_PWM_IMX=y
+CONFIG_DM_SERIAL=y
 CONFIG_SPI=y
 CONFIG_MXC_SPI=y
 CONFIG_USB=y