1 files changed, 38 insertions, 0 deletions
diff --git a/arch/arm/boards/terasic-de10-nano/board.c b/arch/arm/boards/terasic-de10-nano/board.c
new file mode 100644
index 0000000000..e553e26da8
--- /dev/null
+++ b/arch/arm/boards/terasic-de10-nano/board.c
@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <common.h>
+#include <types.h>
+#include <driver.h>
+#include <init.h>
+#include <asm/armlinux.h>
+#include <linux/mdio.h>
+#include <linux/micrel_phy.h>
+#include <linux/phy.h>
+#include <linux/sizes.h>
+#include <fcntl.h>
+#include <fs.h>
+#include <mach/socfpga/cyclone5-regs.h>
+
+static int phy_fixup(struct phy_device *dev)
+{
+	/*
+	 * min rx data delay, max rx/tx clock delay,
+	 * min rx/tx control delay
+	 */
+	phy_write_mmd(dev, MDIO_MMD_WIS, 4, 0);
+	phy_write_mmd(dev, MDIO_MMD_WIS, 5, 0);
+	phy_write_mmd(dev, MDIO_MMD_WIS, 8, 0x003ff);
+	return 0;
+}
+
+static int socfpga_init(void)
+{
+	if (!of_machine_is_compatible("terasic,de10-nano"))
+		return 0;
+
+	if (IS_ENABLED(CONFIG_PHYLIB))
+		phy_register_fixup_for_uid(PHY_ID_KSZ9031, MICREL_PHY_ID_MASK, phy_fixup);
+
+	return 0;
+}
+console_initcall(socfpga_init);