GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/drivers/power/domain/imx8-power-domain.c

@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2019 NXP
+ */
+
+#define DEBUG
+#include <common.h>
+#include <dm.h>
+#include <power-domain-uclass.h>
+#include <asm/arch/power-domain.h>
+#include <asm/arch/sci/sci.h>
+
+static int imx8_power_domain_request(struct power_domain *power_domain)
+{
+	debug("%s(power_domain=%p)\n", __func__, power_domain);
+
+	return 0;
+}
+
+static int imx8_power_domain_free(struct power_domain *power_domain)
+{
+	debug("%s(power_domain=%p)\n", __func__, power_domain);
+
+	return 0;
+}
+
+static int imx8_power_domain_on(struct power_domain *power_domain)
+{
+	u32 resource_id = power_domain->id;
+	int ret;
+
+	debug("%s: resource_id %u\n", __func__, resource_id);
+
+	ret = sc_pm_set_resource_power_mode(-1, resource_id, SC_PM_PW_MODE_ON);
+	if (ret) {
+		printf("Error: %u Power up failed! (error = %d)\n",
+		       resource_id, ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int imx8_power_domain_off(struct power_domain *power_domain)
+{
+	u32 resource_id = power_domain->id;
+	int ret;
+
+	debug("%s: resource_id %u\n", __func__, resource_id);
+
+	ret = sc_pm_set_resource_power_mode(-1, resource_id, SC_PM_PW_MODE_OFF);
+	if (ret) {
+		printf("Error: %u Power off failed! (error = %d)\n",
+		       resource_id, ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int imx8_power_domain_probe(struct udevice *dev)
+{
+	debug("%s(dev=%s)\n", __func__, dev->name);
+
+	return 0;
+}
+
+static const struct udevice_id imx8_power_domain_ids[] = {
+	{ .compatible = "fsl,imx8qxp-scu-pd" },
+	{ .compatible = "fsl,scu-pd" },
+	{ }
+};
+
+struct power_domain_ops imx8_power_domain_ops_v2 = {
+	.request = imx8_power_domain_request,
+	.free = imx8_power_domain_free,
+	.on = imx8_power_domain_on,
+	.off = imx8_power_domain_off,
+};
+
+U_BOOT_DRIVER(imx8_power_domain_v2) = {
+	.name = "imx8_power_domain_v2",
+	.id = UCLASS_POWER_DOMAIN,
+	.of_match = imx8_power_domain_ids,
+	.probe = imx8_power_domain_probe,
+	.ops = &imx8_power_domain_ops_v2,
+};