diff options
Diffstat (limited to 'arch/arm/mach-imx/mach-imx6sx.c')
| -rw-r--r-- | arch/arm/mach-imx/mach-imx6sx.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/mach-imx6sx.c b/arch/arm/mach-imx/mach-imx6sx.c index 4111c0fa8d09..7a96c6577234 100644 --- a/arch/arm/mach-imx/mach-imx6sx.c +++ b/arch/arm/mach-imx/mach-imx6sx.c @@ -8,12 +8,62 @@ #include <linux/irqchip.h> #include <linux/of_platform.h> +#include <linux/phy.h> +#include <linux/regmap.h> +#include <linux/mfd/syscon.h> +#include <linux/mfd/syscon/imx6q-iomuxc-gpr.h> #include <asm/mach/arch.h> #include <asm/mach/map.h> #include "common.h" #include "cpuidle.h" +static int ar8031_phy_fixup(struct phy_device *dev) +{ + u16 val; + + /* Set RGMII IO voltage to 1.8V */ + phy_write(dev, 0x1d, 0x1f); + phy_write(dev, 0x1e, 0x8); + + /* introduce tx clock delay */ + phy_write(dev, 0x1d, 0x5); + val = phy_read(dev, 0x1e); + val |= 0x0100; + phy_write(dev, 0x1e, val); + + return 0; +} + +#define PHY_ID_AR8031 0x004dd074 +static void __init imx6sx_enet_phy_init(void) +{ + if (IS_BUILTIN(CONFIG_PHYLIB)) + phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffff, + ar8031_phy_fixup); +} + +static void __init imx6sx_enet_clk_sel(void) +{ + struct regmap *gpr; + + gpr = syscon_regmap_lookup_by_compatible("fsl,imx6sx-iomuxc-gpr"); + if (!IS_ERR(gpr)) { + regmap_update_bits(gpr, IOMUXC_GPR1, + IMX6SX_GPR1_FEC_CLOCK_MUX_SEL_MASK, 0); + regmap_update_bits(gpr, IOMUXC_GPR1, + IMX6SX_GPR1_FEC_CLOCK_PAD_DIR_MASK, 0); + } else { + pr_err("failed to find fsl,imx6sx-iomux-gpr regmap\n"); + } +} + +static inline void imx6sx_enet_init(void) +{ + imx6sx_enet_phy_init(); + imx6sx_enet_clk_sel(); +} + static void __init imx6sx_init_machine(void) { struct device *parent; @@ -24,6 +74,7 @@ static void __init imx6sx_init_machine(void) of_platform_populate(NULL, of_default_bus_match_table, NULL, parent); + imx6sx_enet_init(); imx_anatop_init(); imx6sx_pm_init(); } |