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ARM: imx: add enet init for i.MX7D platform

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Add enet phy fixup, clock source init for i.MX7D platform.

Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Fugang Duan 2015-09-07 10:55:00 +08:00 committed by Shawn Guo
parent 7dc87ff881
commit 69f9c5047d
1 changed files with 74 additions and 0 deletions
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74
arch/arm/mach-imx/mach-imx7d.c
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@ -6,12 +6,85 @@
* published by the Free Software Foundation.
*/
#include <linux/irqchip.h>
#include <linux/mfd/syscon.h>
#include <linux/mfd/syscon/imx7-iomuxc-gpr.h>
#include <linux/of_platform.h>
#include <linux/phy.h>
#include <linux/regmap.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include "common.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);
/* disable phy AR8031 SmartEEE function. */
phy_write(dev, 0xd, 0x3);
phy_write(dev, 0xe, 0x805d);
phy_write(dev, 0xd, 0x4003);
val = phy_read(dev, 0xe);
val &= ~(0x1 << 8);
phy_write(dev, 0xe, val);
/* introduce tx clock delay */
phy_write(dev, 0x1d, 0x5);
val = phy_read(dev, 0x1e);
val |= 0x0100;
phy_write(dev, 0x1e, val);
return 0;
}
static int bcm54220_phy_fixup(struct phy_device *dev)
{
/* enable RXC skew select RGMII copper mode */
phy_write(dev, 0x1e, 0x21);
phy_write(dev, 0x1f, 0x7ea8);
phy_write(dev, 0x1e, 0x2f);
phy_write(dev, 0x1f, 0x71b7);
return 0;
}
#define PHY_ID_AR8031 0x004dd074
#define PHY_ID_BCM54220 0x600d8589
static void __init imx7d_enet_phy_init(void)
{
if (IS_BUILTIN(CONFIG_PHYLIB)) {
phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffff,
ar8031_phy_fixup);
phy_register_fixup_for_uid(PHY_ID_BCM54220, 0xffffffff,
bcm54220_phy_fixup);
}
}
static void __init imx7d_enet_clk_sel(void)
{
struct regmap *gpr;
gpr = syscon_regmap_lookup_by_compatible("fsl,imx7d-iomuxc-gpr");
if (!IS_ERR(gpr)) {
regmap_update_bits(gpr, IOMUXC_GPR1, IMX7D_GPR1_ENET_TX_CLK_SEL_MASK, 0);
regmap_update_bits(gpr, IOMUXC_GPR1, IMX7D_GPR1_ENET_CLK_DIR_MASK, 0);
} else {
pr_err("failed to find fsl,imx7d-iomux-gpr regmap\n");
}
}
static inline void imx7d_enet_init(void)
{
imx7d_enet_phy_init();
imx7d_enet_clk_sel();
}
static void __init imx7d_init_machine(void)
{
struct device *parent;
@ -22,6 +95,7 @@ static void __init imx7d_init_machine(void)
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
imx_anatop_init();
imx7d_enet_init();
}
static void __init imx7d_init_irq(void)