[PATCH v2 2/5] ARM: imx: add enet init for i.MX7D platform
From: shawnguo@kernel.org (Shawn Guo)
Date: 2015-09-06 12:37:50
On Mon, Aug 24, 2015 at 11:29:49AM +0800, Fugang Duan wrote:
quoted hunk ↗ jump to hunk
Add enet phy fixup, clock source init for i.MX7D platform. Signed-off-by: Fugang Duan <redacted> --- arch/arm/mach-imx/mach-imx7d.c | 76 ++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 74 insertions(+), 2 deletions(-)diff --git a/arch/arm/mach-imx/mach-imx7d.c b/arch/arm/mach-imx/mach-imx7d.c index 4d4a190..07e9a7e 100644 --- a/arch/arm/mach-imx/mach-imx7d.c +++ b/arch/arm/mach-imx/mach-imx7d.c@@ -5,13 +5,84 @@ * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ -#include <linux/irqchip.h> -#include <linux/of_platform.h> #include <asm/mach/arch.h> #include <asm/mach/map.h> +#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 "common.h"
Please arrange the headers like below: #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 0x600d8589Have a blank line here. Shawn
quoted hunk ↗ jump to hunk
+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 +93,7 @@ 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)-- 1.9.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel at lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel