From e00c89df0605037d417fdb4021d2334bc191beb1 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Tue, 23 Oct 2012 06:34:53 +0000 Subject: [PATCH] mx25pdk: Add Ethernet support mx25pdk has a Ethernet port that is connected to its internal FEC controller. In order to power up the Ethernet PHY (DP83640) it is necessary to communicate with the MC34704 PMIC via I2C. Make the FEC ethernet port functional Signed-off-by: Fabio Estevam --- board/freescale/mx25pdk/mx25pdk.c | 61 +++++++++++++++++++++++++++++++ include/configs/mx25pdk.h | 22 +++++++++++ 2 files changed, 83 insertions(+) diff --git a/board/freescale/mx25pdk/mx25pdk.c b/board/freescale/mx25pdk/mx25pdk.c index 9bf2d48b36..72fa6bc826 100644 --- a/board/freescale/mx25pdk/mx25pdk.c +++ b/board/freescale/mx25pdk/mx25pdk.c @@ -26,7 +26,13 @@ #include #include #include +#include +#include +#include +#include +#define FEC_RESET_B IMX_GPIO_NR(2, 3) +#define FEC_ENABLE_B IMX_GPIO_NR(4, 8) #define CARD_DETECT IMX_GPIO_NR(2, 1) DECLARE_GLOBAL_DATA_PTR; @@ -37,6 +43,47 @@ struct fsl_esdhc_cfg esdhc_cfg[1] = { }; #endif +static void mx25pdk_fec_init(void) +{ + struct iomuxc_mux_ctl *muxctl; + struct iomuxc_pad_ctl *padctl; + u32 gpio_mux_mode = MX25_PIN_MUX_MODE(5); + u32 gpio_mux_mode0_sion = MX25_PIN_MUX_MODE(0) | MX25_PIN_MUX_SION; + + /* FEC pin init is generic */ + mx25_fec_init_pins(); + + muxctl = (struct iomuxc_mux_ctl *)IMX_IOPADMUX_BASE; + padctl = (struct iomuxc_pad_ctl *)IMX_IOPADCTL_BASE; + /* + * Set up FEC_RESET_B and FEC_ENABLE_B + * + * FEC_RESET_B: gpio2_3 is ALT 5 mode of pin D12 + * FEC_ENABLE_B: gpio4_8 is ALT 5 mode of pin A17 + */ + writel(gpio_mux_mode, &muxctl->pad_d12); + writel(gpio_mux_mode, &muxctl->pad_a17); + + writel(0x0, &padctl->pad_d12); + writel(0x0, &padctl->pad_a17); + + /* Assert RESET and ENABLE low */ + gpio_direction_output(FEC_RESET_B, 0); + gpio_direction_output(FEC_ENABLE_B, 0); + + udelay(10); + + /* Deassert RESET and ENABLE */ + gpio_set_value(FEC_RESET_B, 1); + gpio_set_value(FEC_ENABLE_B, 1); + + /* Setup I2C pins so that PMIC can turn on PHY supply */ + writel(gpio_mux_mode0_sion, &muxctl->pad_i2c1_clk); + writel(gpio_mux_mode0_sion, &muxctl->pad_i2c1_dat); + writel(0x1E8, &padctl->pad_i2c1_clk); + writel(0x1E8, &padctl->pad_i2c1_dat); +} + int dram_init(void) { /* dram_init must store complete ramsize in gd->ram_size */ @@ -60,6 +107,20 @@ int board_init(void) return 0; } +int board_late_init(void) +{ + struct pmic *p; + + mx25pdk_fec_init(); + + pmic_init(); + p = get_pmic(); + /* Turn on Ethernet PHY supply */ + pmic_reg_write(p, MC34704_GENERAL2_REG, ONOFFE); + + return 0; +} + #ifdef CONFIG_FSL_ESDHC int board_mmc_getcd(struct mmc *mmc) { diff --git a/include/configs/mx25pdk.h b/include/configs/mx25pdk.h index 5258f88472..0bb35797ed 100644 --- a/include/configs/mx25pdk.h +++ b/include/configs/mx25pdk.h @@ -43,6 +43,7 @@ #define PHYS_SDRAM_1_SIZE (64 * 1024 * 1024) #define CONFIG_BOARD_EARLY_INIT_F +#define CONFIG_BOARD_LATE_INIT #define CONFIG_SYS_SDRAM_BASE PHYS_SDRAM_1 #define CONFIG_SYS_INIT_RAM_ADDR IMX_RAM_BASE @@ -105,8 +106,29 @@ #define CONFIG_SYS_FSL_ESDHC_ADDR 0 #define CONFIG_SYS_FSL_ESDHC_NUM 1 +/* PMIC Configs */ +#define CONFIG_PMIC +#define CONFIG_PMIC_I2C +#define CONFIG_PMIC_FSL +#define CONFIG_PMIC_FSL_MC34704 +#define CONFIG_SYS_FSL_PMIC_I2C_ADDR 0x54 + #define CONFIG_DOS_PARTITION +/* I2C Configs */ +#define CONFIG_CMD_I2C +#define CONFIG_HARD_I2C +#define CONFIG_I2C_MXC +#define CONFIG_SYS_I2C_BASE IMX_I2C_BASE +#define CONFIG_SYS_I2C_SPEED 100000 + +/* Ethernet Configs */ + +#define CONFIG_CMD_PING +#define CONFIG_CMD_DHCP +#define CONFIG_CMD_MII +#define CONFIG_CMD_NET + #define CONFIG_BOOTDELAY 3 #define CONFIG_LOADADDR 0x81000000 /* loadaddr env var */ -- 2.39.5