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author | Fabio Estevam <fabio.estevam@freescale.com> | 2013-09-13 00:36:28 -0300 |
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committer | Stefano Babic <sbabic@denx.de> | 2013-09-20 17:55:37 +0200 |
commit | 31f07964c896e19b501e9a4a59a8df85515cd0b9 (patch) | |
tree | 2a0422e6df2908dbc65cfbe5fb11e92644252f15 /board/freescale/mx6slevk/mx6slevk.c | |
parent | 7df51fd8be413a6b831f0fa7b83cad76b5c4e951 (diff) | |
download | u-boot-imx-31f07964c896e19b501e9a4a59a8df85515cd0b9.zip u-boot-imx-31f07964c896e19b501e9a4a59a8df85515cd0b9.tar.gz u-boot-imx-31f07964c896e19b501e9a4a59a8df85515cd0b9.tar.bz2 |
mx6slevk: Add Ethernet support
mx6slevk has a SMSC8720 connected in RMII mode.
Add support for it.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Diffstat (limited to 'board/freescale/mx6slevk/mx6slevk.c')
-rw-r--r-- | board/freescale/mx6slevk/mx6slevk.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c index 5b6ef81..643fdac 100644 --- a/board/freescale/mx6slevk/mx6slevk.c +++ b/board/freescale/mx6slevk/mx6slevk.c @@ -18,6 +18,7 @@ #include <common.h> #include <fsl_esdhc.h> #include <mmc.h> +#include <netdev.h> DECLARE_GLOBAL_DATA_PTR; @@ -29,6 +30,12 @@ DECLARE_GLOBAL_DATA_PTR; PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \ PAD_CTL_SRE_FAST | PAD_CTL_HYS) +#define ENET_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \ + PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \ + PAD_CTL_DSE_40ohm | PAD_CTL_HYS) + +#define ETH_PHY_RESET IMX_GPIO_NR(4, 21) + int dram_init(void) { gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE); @@ -50,11 +57,35 @@ static iomux_v3_cfg_t const usdhc2_pads[] = { MX6_PAD_SD2_DAT3__USDHC2_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), }; +static iomux_v3_cfg_t const fec_pads[] = { + MX6_PAD_FEC_MDC__FEC_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL), + MX6_PAD_FEC_MDIO__FEC_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL), + MX6_PAD_FEC_CRS_DV__FEC_RX_DV | MUX_PAD_CTRL(ENET_PAD_CTRL), + MX6_PAD_FEC_RXD0__FEC_RX_DATA0 | MUX_PAD_CTRL(ENET_PAD_CTRL), + MX6_PAD_FEC_RXD1__FEC_RX_DATA1 | MUX_PAD_CTRL(ENET_PAD_CTRL), + MX6_PAD_FEC_TX_EN__FEC_TX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL), + MX6_PAD_FEC_TXD0__FEC_TX_DATA0 | MUX_PAD_CTRL(ENET_PAD_CTRL), + MX6_PAD_FEC_TXD1__FEC_TX_DATA1 | MUX_PAD_CTRL(ENET_PAD_CTRL), + MX6_PAD_FEC_REF_CLK__FEC_REF_OUT | MUX_PAD_CTRL(ENET_PAD_CTRL), + MX6_PAD_FEC_RX_ER__GPIO_4_19 | MUX_PAD_CTRL(NO_PAD_CTRL), + MX6_PAD_FEC_TX_CLK__GPIO_4_21 | MUX_PAD_CTRL(NO_PAD_CTRL), +}; + static void setup_iomux_uart(void) { imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads)); } +static void setup_iomux_fec(void) +{ + imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads)); + + /* Reset LAN8720 PHY */ + gpio_direction_output(ETH_PHY_RESET , 0); + udelay(1000); + gpio_set_value(ETH_PHY_RESET, 1); +} + static struct fsl_esdhc_cfg usdhc_cfg[1] = { {USDHC2_BASE_ADDR}, }; @@ -72,6 +103,40 @@ int board_mmc_init(bd_t *bis) return fsl_esdhc_initialize(bis, &usdhc_cfg[0]); } +#ifdef CONFIG_FEC_MXC +int board_eth_init(bd_t *bis) +{ + int ret; + + setup_iomux_fec(); + + ret = cpu_eth_init(bis); + if (ret) { + printf("FEC MXC: %s:failed\n", __func__); + return ret; + } + + return 0; +} + +static int setup_fec(void) +{ + struct iomuxc_base_regs *iomuxc_regs = + (struct iomuxc_base_regs *)IOMUXC_BASE_ADDR; + int ret; + + /* clear gpr1[14], gpr1[18:17] to select anatop clock */ + clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC_MASK, 0); + + ret = enable_fec_anatop_clock(); + if (ret) + return ret; + + return 0; +} +#endif + + int board_early_init_f(void) { setup_iomux_uart(); @@ -83,6 +148,9 @@ int board_init(void) /* address of boot parameters */ gd->bd->bi_boot_params = PHYS_SDRAM + 0x100; +#ifdef CONFIG_FEC_MXC + setup_fec(); +#endif return 0; } |