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| author | Richard Zhao <richard.zhao@linaro.org> | 2011-12-14 02:26:47 +0100 |
|---|---|---|
| committer | Shawn Guo <shawn.guo@linaro.org> | 2011-12-14 14:25:45 +0100 |
| commit | 477fce49aef4096639ca169556435c1f9068ce33 (patch) | |
| tree | 59b179baf9ed61a5bdb0bc1a7a9cb33283a93111 /arch/arm/mach-imx | |
| parent | arm/imx6: add imx6q sabrelite board support (diff) | |
| download | linux-477fce49aef4096639ca169556435c1f9068ce33.tar.xz linux-477fce49aef4096639ca169556435c1f9068ce33.zip | |
arm/imx6q-sabrelite: add enet phy ksz9021rn fixup
The default phy RGMII pad settings can not work, tune pad skew.
Signed-off-by: Richard Zhao <richard.zhao@linaro.org>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'arch/arm/mach-imx')
| -rw-r--r-- | arch/arm/mach-imx/mach-imx6q.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c index d24d6c485eee..b2c3f69fb4e9 100644 --- a/arch/arm/mach-imx/mach-imx6q.c +++ b/arch/arm/mach-imx/mach-imx6q.c @@ -16,6 +16,8 @@ #include <linux/of.h> #include <linux/of_irq.h> #include <linux/of_platform.h> +#include <linux/phy.h> +#include <linux/micrel_phy.h> #include <asm/hardware/cache-l2x0.h> #include <asm/hardware/gic.h> #include <asm/mach/arch.h> @@ -23,8 +25,27 @@ #include <mach/common.h> #include <mach/hardware.h> +/* For imx6q sabrelite board: set KSZ9021RN RGMII pad skew */ +static int ksz9021rn_phy_fixup(struct phy_device *phydev) +{ + /* min rx data delay */ + phy_write(phydev, 0x0b, 0x8105); + phy_write(phydev, 0x0c, 0x0000); + + /* max rx/tx clock delay, min rx/tx control delay */ + phy_write(phydev, 0x0b, 0x8104); + phy_write(phydev, 0x0c, 0xf0f0); + phy_write(phydev, 0x0b, 0x104); + + return 0; +} + static void __init imx6q_init_machine(void) { + if (of_machine_is_compatible("fsl,imx6q-sabrelite")) + phy_register_fixup_for_uid(PHY_ID_KSZ9021, MICREL_PHY_ID_MASK, + ksz9021rn_phy_fixup); + of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); imx6q_pm_init(); |