1 files changed, 58 insertions, 0 deletions
diff --git a/arch/arm/boards/lxa-mc1/board.c b/arch/arm/boards/lxa-mc1/board.c
new file mode 100644
index 0000000000..7f1f3ccd7e
--- /dev/null
+++ b/arch/arm/boards/lxa-mc1/board.c
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: GPL-2.0+
+#include <common.h>
+#include <linux/sizes.h>
+#include <init.h>
+#include <asm/memory.h>
+#include <mach/bbu.h>
+#include <bootsource.h>
+#include <of.h>
+
+static int of_fixup_regulator_supply_disable(struct device_node *root, void *path)
+{
+	struct device_node *node;
+	struct property *prop;
+
+	node = of_find_node_by_path_from(root, path);
+	if (!node) {
+		pr_warn("fixup for %s failed: not found\n", (const char *)path);
+		return -ENOENT;
+	}
+
+	if (!of_property_read_bool(node, "regulator-always-on"))
+		return 0;
+
+	prop = of_find_property(node, "vin-supply", NULL);
+	if (prop)
+		of_delete_property(prop);
+
+	return 0;
+}
+
+static int mc1_device_init(void)
+{
+	int flags;
+	if (!of_machine_is_compatible("lxa,stm32mp157c-mc1"))
+		return 0;
+
+	flags = bootsource_get_instance() == 0 ? BBU_HANDLER_FLAG_DEFAULT : 0;
+	stm32mp_bbu_mmc_register_handler("sd", "/dev/mmc0.ssbl", flags);
+
+	flags = bootsource_get_instance() == 1 ? BBU_HANDLER_FLAG_DEFAULT : 0;
+	stm32mp_bbu_mmc_register_handler("emmc", "/dev/mmc1.ssbl", flags);
+
+
+	if (bootsource_get_instance() == 0)
+		of_device_enable_path("/chosen/environment-sd");
+	else
+		of_device_enable_path("/chosen/environment-emmc");
+
+	barebox_set_hostname("lxa-mc1");
+
+	/* The regulator is powered by the PMIC, but is always on as far as
+	 * software is concerned. Break the reference to the PMIC, so the OS
+	 * doesn't need to defer SDMMC/Ethernet peripherals till after the PMIC
+	 * is up.
+	 */
+	return of_register_fixup(of_fixup_regulator_supply_disable, "/regulator_3v3");
+}
+device_initcall(mc1_device_init);