1 files changed, 84 insertions, 0 deletions
diff --git a/arch/arm/boards/protonic-imx8m/board.c b/arch/arm/boards/protonic-imx8m/board.c
new file mode 100644
index 0000000000..87264f0c97
--- /dev/null
+++ b/arch/arm/boards/protonic-imx8m/board.c
@@ -0,0 +1,84 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// SPDX-FileCopyrightText: 2020 David Jander, Protonic Holland
+
+#include <bootsource.h>
+#include <common.h>
+#include <envfs.h>
+#include <environment.h>
+#include <i2c/i2c.h>
+#include <init.h>
+#include <mach/bbu.h>
+
+static int prt_prt8mm_init_power(void)
+{
+	struct i2c_adapter *adapter = NULL;
+	struct i2c_client client;
+	int ret;
+	char buf[2];
+
+	client.addr = 0x60;
+	adapter = i2c_get_adapter(1);
+	if (!adapter) {
+		printf("i2c bus not found\n");
+		return -ENODEV;
+	}
+	client.adapter = adapter;
+
+	buf[0] = 0xe3;
+	ret = i2c_write_reg(&client, 0x00, buf, 1); // VSEL0 = 0.95V, force PWM
+	if (ret < 0) {
+		printf("i2c write error\n");
+		return -ENODEV;
+	}
+	buf[0] = 0xe0;
+	ret = i2c_write_reg(&client, 0x01, buf, 1); // VSEL1 = 0.92V, force PWM
+	if (ret < 0) {
+		printf("i2c write error\n");
+		return -ENODEV;
+	}
+	return 0;
+}
+
+static int prt_prt8mm_probe(struct device_d *dev)
+{
+	int emmc_bbu_flag = 0;
+	int sd_bbu_flag = 0;
+
+	prt_prt8mm_init_power();
+
+	barebox_set_hostname("prt8mm");
+
+	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");
+			sd_bbu_flag = BBU_HANDLER_FLAG_DEFAULT;
+		}
+	} else {
+		of_device_enable_path("/chosen/environment-emmc");
+		emmc_bbu_flag = BBU_HANDLER_FLAG_DEFAULT;
+	}
+
+	imx8m_bbu_internal_mmc_register_handler("SD", "/dev/mmc1.barebox",
+						sd_bbu_flag);
+	imx8m_bbu_internal_mmcboot_register_handler("eMMC", "/dev/mmc2",
+						    emmc_bbu_flag);
+
+	defaultenv_append_directory(defaultenv_prt8m);
+
+	return 0;
+}
+
+static const struct of_device_id prt_imx8mm_of_match[] = {
+	{ .compatible = "prt,prt8mm", },
+	{ /* sentinel */ },
+};
+
+static struct driver_d prt_prt8mm_board_driver = {
+	.name = "board-protonic-imx8mm",
+	.probe = prt_prt8mm_probe,
+	.of_compatible = DRV_OF_COMPAT(prt_imx8mm_of_match),
+};
+device_platform_driver(prt_prt8mm_board_driver);