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Commit 477fce49 authored by Richard Zhao's avatar Richard Zhao Committed by Shawn Guo
Browse files

arm/imx6q-sabrelite: add enet phy ksz9021rn fixup 



The default phy RGMII pad settings can not work, tune pad skew.

Signed-off-by: default avatarRichard Zhao <richard.zhao@linaro.org>
Signed-off-by: default avatarShawn Guo <shawn.guo@linaro.org>
parent 3c8276c6

arch/arm/mach-imx/mach-imx6q.c

+21 −0
Original line number Diff line number Diff line
@@ -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();