diff options
| author | Fabio Estevam <festevam@gmail.com> | 2019-09-16 14:15:00 -0300 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2019-10-08 16:35:59 +0200 |
| commit | d9033f2f422eb3d82c9e914a85ab73bcf7b2a1d5 (patch) | |
| tree | 00839c686daeded85db1840ef93e7eb98f236912 /board/technexion | |
| parent | 7efe52a0a7142354e428ed81f8d84a22884b8be3 (diff) | |
| download | u-boot-d9033f2f422eb3d82c9e914a85ab73bcf7b2a1d5.tar.gz u-boot-d9033f2f422eb3d82c9e914a85ab73bcf7b2a1d5.tar.xz u-boot-d9033f2f422eb3d82c9e914a85ab73bcf7b2a1d5.zip | |
pico-imx6: Add Ethernet support
Add Ethernet support.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Diffstat (limited to 'board/technexion')
| -rw-r--r-- | board/technexion/pico-imx6/pico-imx6.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/board/technexion/pico-imx6/pico-imx6.c b/board/technexion/pico-imx6/pico-imx6.c index 717f20d9d7..2ae5af83d2 100644 --- a/board/technexion/pico-imx6/pico-imx6.c +++ b/board/technexion/pico-imx6/pico-imx6.c @@ -17,6 +17,9 @@ #include <asm/io.h> #include <linux/sizes.h> #include <common.h> +#include <miiphy.h> +#include <netdev.h> +#include <phy.h> DECLARE_GLOBAL_DATA_PTR; @@ -24,6 +27,11 @@ DECLARE_GLOBAL_DATA_PTR; PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \ PAD_CTL_SRE_FAST | PAD_CTL_HYS) +#define ENET_PAD_CTRL (PAD_CTL_PUS_100K_UP | \ + PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS) + +#define ETH_PHY_RESET IMX_GPIO_NR(1, 26) + int dram_init(void) { gd->ram_size = imx_ddr_size(); @@ -41,6 +49,39 @@ static void setup_iomux_uart(void) SETUP_IOMUX_PADS(uart1_pads); } +static iomux_v3_cfg_t const enet_pads[] = { + IOMUX_PADS(PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_TXC__RGMII_TXC | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_TD0__RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_TD1__RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_TD2__RGMII_TD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_TD3__RGMII_TD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_TX_CTL__RGMII_TX_CTL | + MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_ENET_REF_CLK__ENET_TX_CLK | + MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_RXC__RGMII_RXC | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_RD0__RGMII_RD0 | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_RD1__RGMII_RD1 | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_RD2__RGMII_RD2 | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_RD3__RGMII_RD3 | MUX_PAD_CTRL(ENET_PAD_CTRL)), + IOMUX_PADS(PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL)), + /* AR8035 PHY Reset */ + IOMUX_PADS(PAD_ENET_RXD1__GPIO1_IO26 | MUX_PAD_CTRL(NO_PAD_CTRL)), +}; + +static void setup_iomux_enet(void) +{ + SETUP_IOMUX_PADS(enet_pads); + + /* Reset AR8031 PHY */ + gpio_request(ETH_PHY_RESET, "enet_phy_reset"); + gpio_direction_output(ETH_PHY_RESET, 0); + udelay(500); + gpio_set_value(ETH_PHY_RESET, 1); +} + int board_early_init_f(void) { setup_iomux_uart(); @@ -48,6 +89,39 @@ int board_early_init_f(void) return 0; } +int board_eth_init(bd_t *bis) +{ + setup_iomux_enet(); + + return cpu_eth_init(bis); +} + +int board_phy_config(struct phy_device *phydev) +{ + unsigned short val; + + /* To enable AR8035 ouput a 125MHz clk from CLK_25M */ + phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x7); + phy_write(phydev, MDIO_DEVAD_NONE, 0xe, 0x8016); + phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x4007); + + val = phy_read(phydev, MDIO_DEVAD_NONE, 0xe); + val &= 0xffe7; + val |= 0x18; + phy_write(phydev, MDIO_DEVAD_NONE, 0xe, val); + + /* introduce tx clock delay */ + phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x5); + val = phy_read(phydev, MDIO_DEVAD_NONE, 0x1e); + val |= 0x0100; + phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, val); + + if (phydev->drv->config) + phydev->drv->config(phydev); + + return 0; +} + int overwrite_console(void) { return 1; |