1 files changed, 72 insertions, 0 deletions
diff --git a/board/terasic/de0-nano-soc/socfpga.c b/board/terasic/de0-nano-soc/socfpga.c
new file mode 100644
index 00000000000..85700b05bef
--- /dev/null
+++ b/board/terasic/de0-nano-soc/socfpga.c
@@ -0,0 +1,72 @@
+/*
+ *  Copyright (C) 2012 Altera Corporation <www.altera.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+
+#include <micrel.h>
+#include <netdev.h>
+#include <phy.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+void s_init(void) {}
+
+/*
+ * Miscellaneous platform dependent initialisations
+ */
+int board_init(void)
+{
+	/* Address of boot parameters for ATAG (if ATAG is used) */
+	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
+
+	return 0;
+}
+
+/*
+ * PHY configuration
+ */
+#ifdef CONFIG_PHY_MICREL_KSZ9031
+int board_phy_config(struct phy_device *phydev)
+{
+	int ret;
+	/*
+	 * These skew settings for the KSZ9021 ethernet phy is required for ethernet
+	 * to work reliably on most flavors of cyclone5 boards.
+	 */
+	ret = ksz9031_phy_extended_write(phydev, 0x2,
+					 MII_KSZ9031_EXT_RGMII_CTRL_SIG_SKEW,
+					 MII_KSZ9031_MOD_DATA_NO_POST_INC,
+					 0x70);
+	if (ret)
+		return ret;
+
+	ret = ksz9031_phy_extended_write(phydev, 0x2,
+					 MII_KSZ9031_EXT_RGMII_RX_DATA_SKEW,
+					 MII_KSZ9031_MOD_DATA_NO_POST_INC,
+					 0x7777);
+	if (ret)
+		return ret;
+
+	ret = ksz9031_phy_extended_write(phydev, 0x2,
+					 MII_KSZ9031_EXT_RGMII_TX_DATA_SKEW,
+					 MII_KSZ9031_MOD_DATA_NO_POST_INC,
+					 0);
+	if (ret)
+		return ret;
+
+	ret = ksz9031_phy_extended_write(phydev, 0x2,
+					 MII_KSZ9031_EXT_RGMII_CLOCK_SKEW,
+					 MII_KSZ9031_MOD_DATA_NO_POST_INC,
+					 0x03FC);
+	if (ret)
+		return ret;
+
+	if (phydev->drv->config)
+		return phydev->drv->config(phydev);
+
+	return 0;
+}
+#endif