1 files changed, 114 insertions, 0 deletions
diff --git a/arch/arm/boards/polyhex-debix/board.c b/arch/arm/boards/polyhex-debix/board.c
new file mode 100644
index 0000000000..ea4fc26a0c
--- /dev/null
+++ b/arch/arm/boards/polyhex-debix/board.c
@@ -0,0 +1,114 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <bootsource.h>
+#include <common.h>
+#include <deep-probe.h>
+#include <envfs.h>
+#include <init.h>
+#include <io.h>
+#include <linux/nvmem-consumer.h>
+#include <mach/imx/bbu.h>
+#include <mach/imx/iomux-mx8mp.h>
+#include <net.h>
+
+struct debix_polyhex_machine_data {
+	void (*ethernet_setup)(void);
+};
+
+#define ETH_ALEN_ASCII	12
+
+static int polyhex_debix_eth_register_ethaddr(struct device_node *np)
+{
+	u8 mac[ETH_ALEN];
+	u8 *data;
+	int ret;
+
+	data = nvmem_cell_get_and_read(np, "mac-address", ETH_ALEN_ASCII);
+	if (IS_ERR(data))
+		return PTR_ERR(data);
+
+	ret = hex2bin(mac, data, ETH_ALEN);
+	if (ret)
+		goto err;
+
+	of_eth_register_ethaddr(np, mac);
+err:
+	free(data);
+
+	return ret;
+}
+
+static void polyhex_debix_ethernet_init(void)
+{
+	static const char * const aliases[] = { "ethernet0", "ethernet1" };
+	struct device_node *np, *root;
+	unsigned int i;
+
+	root = of_get_root_node();
+
+	for (i = 0; i < ARRAY_SIZE(aliases); i++) {
+		const char *alias = aliases[i];
+		int ret;
+
+		np = of_find_node_by_alias(root, alias);
+		if (!np) {
+			pr_warn("Failed to find %s\n", alias);
+			continue;
+		}
+
+		ret = polyhex_debix_eth_register_ethaddr(np);
+		if (ret) {
+			pr_warn("Failed to register MAC for %s\n", alias);
+			continue;
+		}
+	}
+}
+
+static int polyhex_debix_probe(struct device *dev)
+{
+	const struct debix_polyhex_machine_data *machine_data;
+	int emmc_bbu_flag = 0;
+	int sd_bbu_flag = 0;
+	u32 val;
+
+	if (bootsource_get() == BOOTSOURCE_MMC && bootsource_get_instance() == 1) {
+		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);
+
+	/* Enable RGMII TX clk output */
+	val = readl(MX8MP_IOMUXC_GPR_BASE_ADDR + MX8MP_IOMUXC_GPR1);
+	val |= MX8MP_IOMUXC_GPR1_ENET1_RGMII_EN |
+	       MX8MP_IOMUXC_GPR1_ENET_QOS_RGMII_EN;
+	writel(val, MX8MP_IOMUXC_GPR_BASE_ADDR + MX8MP_IOMUXC_GPR1);
+
+	machine_data = device_get_match_data(dev);
+	if (machine_data && machine_data->ethernet_setup)
+		machine_data->ethernet_setup();
+
+	return 0;
+}
+
+static const struct debix_polyhex_machine_data debix_som_a_bmb_08 = {
+	.ethernet_setup = polyhex_debix_ethernet_init,
+};
+
+static const struct of_device_id polyhex_debix_of_match[] = {
+	{ .compatible = "polyhex,imx8mp-debix" },
+	{ .compatible = "polyhex,imx8mp-debix-som-a-bmb-08", .data = &debix_som_a_bmb_08 },
+	{ /* Sentinel */ }
+};
+BAREBOX_DEEP_PROBE_ENABLE(polyhex_debix_of_match);
+
+static struct driver polyhex_debix_board_driver = {
+	.name = "board-imx8mp-debix",
+	.probe = polyhex_debix_probe,
+	.of_compatible = polyhex_debix_of_match,
+};
+coredevice_platform_driver(polyhex_debix_board_driver);