diff options
| -rw-r--r-- | board/technexion/pico-imx6ul/pico-imx6ul.c | 84 | ||||
| -rw-r--r-- | include/configs/pico-imx6ul.h | 10 |
2 files changed, 94 insertions, 0 deletions
diff --git a/board/technexion/pico-imx6ul/pico-imx6ul.c b/board/technexion/pico-imx6ul/pico-imx6ul.c index c038d4326e..fc746ec965 100644 --- a/board/technexion/pico-imx6ul/pico-imx6ul.c +++ b/board/technexion/pico-imx6ul/pico-imx6ul.c @@ -16,6 +16,8 @@ #include <asm/imx-common/iomux-v3.h> #include <asm/io.h> #include <common.h> +#include <miiphy.h> +#include <netdev.h> #include <fsl_esdhc.h> #include <linux/sizes.h> #include <usb.h> @@ -34,6 +36,87 @@ DECLARE_GLOBAL_DATA_PTR; PAD_CTL_PUS_47K_UP | PAD_CTL_SPEED_LOW | \ PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS) +#define MDIO_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_PUE | \ + PAD_CTL_DSE_48ohm | PAD_CTL_SRE_FAST | PAD_CTL_ODE) + +#define ENET_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_PUE | \ + PAD_CTL_SPEED_HIGH | \ + PAD_CTL_DSE_48ohm | PAD_CTL_SRE_FAST) + +#define ENET_CLK_PAD_CTRL (PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST) + +#define RMII_PHY_RESET IMX_GPIO_NR(1, 28) + +static iomux_v3_cfg_t const fec_pads[] = { + MX6_PAD_ENET1_TX_EN__ENET2_MDC | MUX_PAD_CTRL(MDIO_PAD_CTRL), + MX6_PAD_ENET1_TX_DATA1__ENET2_MDIO | MUX_PAD_CTRL(MDIO_PAD_CTRL), + MX6_PAD_ENET2_TX_DATA0__ENET2_TDATA00 | MUX_PAD_CTRL(ENET_PAD_CTRL), + MX6_PAD_ENET2_TX_DATA1__ENET2_TDATA01 | MUX_PAD_CTRL(ENET_PAD_CTRL), + MX6_PAD_ENET2_TX_CLK__ENET2_REF_CLK2 | MUX_PAD_CTRL(ENET_CLK_PAD_CTRL), + MX6_PAD_ENET2_TX_EN__ENET2_TX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL), + MX6_PAD_ENET2_RX_DATA0__ENET2_RDATA00 | MUX_PAD_CTRL(ENET_PAD_CTRL), + MX6_PAD_ENET2_RX_DATA1__ENET2_RDATA01 | MUX_PAD_CTRL(ENET_PAD_CTRL), + MX6_PAD_ENET2_RX_EN__ENET2_RX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL), + MX6_PAD_ENET2_RX_ER__ENET2_RX_ER | MUX_PAD_CTRL(ENET_PAD_CTRL), + MX6_PAD_UART4_TX_DATA__GPIO1_IO28 | MUX_PAD_CTRL(NO_PAD_CTRL), +}; + +static void setup_iomux_fec(void) +{ + imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads)); +} + +int board_eth_init(bd_t *bis) +{ + setup_iomux_fec(); + + gpio_direction_output(RMII_PHY_RESET, 0); + /* + * According to KSZ8081MNX-RNB manual: + * For warm reset, the reset (RST#) pin should be asserted low for a + * minimum of 500μs. The strap-in pin values are read and updated + * at the de-assertion of reset. + */ + udelay(500); + + gpio_direction_output(RMII_PHY_RESET, 1); + /* + * According to KSZ8081MNX-RNB manual: + * After the de-assertion of reset, wait a minimum of 100μs before + * starting programming on the MIIM (MDC/MDIO) interface. + */ + udelay(100); + + return fecmxc_initialize(bis); +} + +static int setup_fec(void) +{ + struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR; + int ret; + + clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC2_MASK, + IOMUX_GPR1_FEC2_CLOCK_MUX1_SEL_MASK); + + ret = enable_fec_anatop_clock(1, ENET_50MHZ); + if (ret) + return ret; + + enable_enet_clk(1); + + return 0; +} + +int board_phy_config(struct phy_device *phydev) +{ + phy_write(phydev, MDIO_DEVAD_NONE, 0x1f, 0x8190); + + if (phydev->drv->config) + phydev->drv->config(phydev); + + return 0; +} + int dram_init(void) { gd->ram_size = imx_ddr_size(); @@ -106,6 +189,7 @@ int board_init(void) /* Address of boot parameters */ gd->bd->bi_boot_params = PHYS_SDRAM + 0x100; + setup_fec(); setup_usb(); return 0; diff --git a/include/configs/pico-imx6ul.h b/include/configs/pico-imx6ul.h index d848eadf25..73e37e1bbd 100644 --- a/include/configs/pico-imx6ul.h +++ b/include/configs/pico-imx6ul.h @@ -17,6 +17,16 @@ #define CONFIG_DISPLAY_CPUINFO #define CONFIG_DISPLAY_BOARDINFO +/* Network support */ + +#define CONFIG_FEC_MXC +#define CONFIG_MII +#define IMX_FEC_BASE ENET2_BASE_ADDR +#define CONFIG_FEC_MXC_PHYADDR 0x1 +#define CONFIG_FEC_XCV_TYPE RMII +#define CONFIG_PHYLIB +#define CONFIG_PHY_MICREL + /* Size of malloc() pool */ #define CONFIG_SYS_MALLOC_LEN (16 * SZ_1M) |