1 files changed, 145 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/power/domain/imx8m-power-domain.c b/roms/u-boot/drivers/power/domain/imx8m-power-domain.c
new file mode 100644
index 000000000..5d34bc129
--- /dev/null
+++ b/roms/u-boot/drivers/power/domain/imx8m-power-domain.c
@@ -0,0 +1,145 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2017 NXP
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <malloc.h>
+#include <power-domain-uclass.h>
+#include <asm/global_data.h>
+#include <asm/io.h>
+#include <asm/arch/power-domain.h>
+#include <asm/mach-imx/sys_proto.h>
+#include <dm/device-internal.h>
+#include <dm/device.h>
+#include <imx_sip.h>
+#include <linux/arm-smccc.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static int imx8m_power_domain_request(struct power_domain *power_domain)
+{
+	return 0;
+}
+
+static int imx8m_power_domain_free(struct power_domain *power_domain)
+{
+	return 0;
+}
+
+static int imx8m_power_domain_on(struct power_domain *power_domain)
+{
+	struct udevice *dev = power_domain->dev;
+	struct imx8m_power_domain_plat *pdata;
+
+	pdata = dev_get_plat(dev);
+
+	if (pdata->resource_id < 0)
+		return -EINVAL;
+
+	if (pdata->has_pd)
+		power_domain_on(&pdata->pd);
+
+	arm_smccc_smc(IMX_SIP_GPC, IMX_SIP_GPC_PM_DOMAIN,
+		      pdata->resource_id, 1, 0, 0, 0, 0, NULL);
+
+	return 0;
+}
+
+static int imx8m_power_domain_off(struct power_domain *power_domain)
+{
+	struct udevice *dev = power_domain->dev;
+	struct imx8m_power_domain_plat *pdata;
+	pdata = dev_get_plat(dev);
+
+	if (pdata->resource_id < 0)
+		return -EINVAL;
+
+	arm_smccc_smc(IMX_SIP_GPC, IMX_SIP_GPC_PM_DOMAIN,
+		      pdata->resource_id, 0, 0, 0, 0, 0, NULL);
+
+	if (pdata->has_pd)
+		power_domain_off(&pdata->pd);
+
+	return 0;
+}
+
+static int imx8m_power_domain_of_xlate(struct power_domain *power_domain,
+				      struct ofnode_phandle_args *args)
+{
+	return 0;
+}
+
+static int imx8m_power_domain_bind(struct udevice *dev)
+{
+	int offset;
+	const char *name;
+	int ret = 0;
+
+	offset = dev_of_offset(dev);
+	for (offset = fdt_first_subnode(gd->fdt_blob, offset); offset > 0;
+	     offset = fdt_next_subnode(gd->fdt_blob, offset)) {
+		/* Bind the subnode to this driver */
+		name = fdt_get_name(gd->fdt_blob, offset, NULL);
+
+		ret = device_bind_with_driver_data(dev, dev->driver, name,
+						   dev->driver_data,
+						   offset_to_ofnode(offset),
+						   NULL);
+
+		if (ret == -ENODEV)
+			printf("Driver '%s' refuses to bind\n",
+			       dev->driver->name);
+
+		if (ret)
+			printf("Error binding driver '%s': %d\n",
+			       dev->driver->name, ret);
+	}
+
+	return 0;
+}
+
+static int imx8m_power_domain_probe(struct udevice *dev)
+{
+	return 0;
+}
+
+static int imx8m_power_domain_of_to_plat(struct udevice *dev)
+{
+	struct imx8m_power_domain_plat *pdata = dev_get_plat(dev);
+
+	pdata->resource_id = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev),
+					    "reg", -1);
+
+	if (!power_domain_get(dev, &pdata->pd))
+		pdata->has_pd = 1;
+
+	return 0;
+}
+
+static const struct udevice_id imx8m_power_domain_ids[] = {
+	{ .compatible = "fsl,imx8mq-gpc" },
+	{ .compatible = "fsl,imx8mm-gpc" },
+	{ .compatible = "fsl,imx8mn-gpc" },
+	{ }
+};
+
+struct power_domain_ops imx8m_power_domain_ops = {
+	.request = imx8m_power_domain_request,
+	.rfree = imx8m_power_domain_free,
+	.on = imx8m_power_domain_on,
+	.off = imx8m_power_domain_off,
+	.of_xlate = imx8m_power_domain_of_xlate,
+};
+
+U_BOOT_DRIVER(imx8m_power_domain) = {
+	.name = "imx8m_power_domain",
+	.id = UCLASS_POWER_DOMAIN,
+	.of_match = imx8m_power_domain_ids,
+	.bind = imx8m_power_domain_bind,
+	.probe = imx8m_power_domain_probe,
+	.of_to_plat = imx8m_power_domain_of_to_plat,
+	.plat_auto	= sizeof(struct imx8m_power_domain_plat),
+	.ops = &imx8m_power_domain_ops,
+};