1 files changed, 81 insertions, 0 deletions
diff --git a/arch/arm/boards/nxp-imx8mm-evk/board.c b/arch/arm/boards/nxp-imx8mm-evk/board.c
new file mode 100644
index 0000000000..59582276b2
--- /dev/null
+++ b/arch/arm/boards/nxp-imx8mm-evk/board.c
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2018 Sascha Hauer, Pengutronix
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation.
+ *
+ */
+
+#include <asm/memory.h>
+#include <bootsource.h>
+#include <common.h>
+#include <init.h>
+#include <linux/phy.h>
+#include <linux/sizes.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 nxp_imx8mm_evk_init(void)
+{
+	int emmc_bbu_flag = 0;
+	int emmc_sd_flag = 0;
+
+	if (!of_machine_is_compatible("fsl,imx8mm-evk"))
+		return 0;
+
+	barebox_set_hostname("imx8mm-evk");
+
+	if (bootsource_get() == BOOTSOURCE_MMC) {
+		if (bootsource_get_instance() == 2) {
+			of_device_enable_path("/chosen/environment-emmc");
+			emmc_bbu_flag = BBU_HANDLER_FLAG_DEFAULT;
+		} else {
+			of_device_enable_path("/chosen/environment-sd");
+			emmc_sd_flag = BBU_HANDLER_FLAG_DEFAULT;
+		}
+	} else {
+		of_device_enable_path("/chosen/environment-emmc");
+		emmc_bbu_flag = BBU_HANDLER_FLAG_DEFAULT;
+	}
+
+	imx8mq_bbu_internal_mmc_register_handler("SD", "/dev/mmc1.barebox",
+						 emmc_sd_flag);
+	imx8mq_bbu_internal_mmc_register_handler("eMMC", "/dev/mmc2",
+						     emmc_bbu_flag);
+
+	phy_register_fixup_for_uid(PHY_ID_AR8031, AR_PHY_ID_MASK,
+				   ar8031_phy_fixup);
+	return 0;
+}
+device_initcall(nxp_imx8mm_evk_init);