arm: socfpga: Add support for the Terasic DE-0 Atlas board
Add support for the Terasic DE0-Nano/Atlas-SoC Kit, which is a CycloneV
based board. The board can boot from SD/MMC. Ethernet is also supported.
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
diff --git a/board/terasic/de0-nano-soc/socfpga.c b/board/terasic/de0-nano-soc/socfpga.c
new file mode 100644
index 0000000..85700b0
--- /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