Add appropriate DT and PHY fixup code needed for i.MX8MQ EVK board.
Signed-off-by: Andrey Smirnov <[email protected]>
---
arch/arm/boards/nxp-imx8mq-evk/board.c | 24 ++++++++++++++++++++++++
arch/arm/dts/imx8mq-evk.dts | 1 +
2 files changed, 25 insertions(+)
diff --git a/arch/arm/boards/nxp-imx8mq-evk/board.c
b/arch/arm/boards/nxp-imx8mq-evk/board.c
index 3645e5e71..aae6970d8 100644
--- a/arch/arm/boards/nxp-imx8mq-evk/board.c
+++ b/arch/arm/boards/nxp-imx8mq-evk/board.c
@@ -21,8 +21,30 @@
#include <init.h>
#include <asm/memory.h>
#include <linux/sizes.h>
+#include <linux/phy.h>
#include <mach/bbu.h>
+#include <envfs.h>
+
+#define PHY_ID_AR8031 0x004dd074
+#define AR_PHY_ID_MASK 0xffffffff
+
+static int ar8031_phy_fixup(struct phy_device *phydev)
+{
+ /*
+ * Enable 1.8V(SEL_1P5_1P8_POS_REG) on
+ * Phy control debug reg 0
+ */
+ phy_write(phydev, 0x1d, 0x1f);
+ phy_write(phydev, 0x1e, 0x8);
+
+ /* rgmii tx clock delay enable */
+ phy_write(phydev, 0x1d, 0x05);
+ phy_write(phydev, 0x1e, 0x100);
+
+ return 0;
+}
+
static int imx8mq_evk_mem_init(void)
{
if (!of_machine_is_compatible("fsl,imx8mq-evk"))
@@ -45,6 +67,8 @@ static int nxp_imx8mq_evk_init(void)
imx8mq_bbu_internal_mmc_register_handler("eMMC", "/dev/mmc0", 0);
+ phy_register_fixup_for_uid(PHY_ID_AR8031, AR_PHY_ID_MASK,
+ ar8031_phy_fixup);
return 0;
}
device_initcall(nxp_imx8mq_evk_init);
diff --git a/arch/arm/dts/imx8mq-evk.dts b/arch/arm/dts/imx8mq-evk.dts
index 3ac13baa1..d6d5d843c 100644
--- a/arch/arm/dts/imx8mq-evk.dts
+++ b/arch/arm/dts/imx8mq-evk.dts
@@ -43,6 +43,7 @@
<&pinctrl_fec1_data_tx>, <&pinctrl_fec1_data_rx>,
<&pinctrl_fec1_phy_reset>;
phy-mode = "rgmii-id";
+ phy-reset-gpios = <&gpio1 9 GPIO_ACTIVE_LOW>;
status = "okay";
};
--
2.17.1
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