#include <dt-bindings/input/input.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/pinctrl/pins-imx8mq.h>
+#include <dt-bindings/power/imx8mq-power.h>
#include <dt-bindings/thermal/thermal.h>
/ {
interrupt-parent = <&gic>;
};
- power: power-controller {
- compatible = "fsl,imx8mq-pm-domain";
- num-domains = <11>;
- #power-domain-cells = <1>;
- };
-
pwm2: pwm@30670000 {
compatible = "fsl,imx8mq-pwm", "fsl,imx27-pwm";
reg = <0x0 0x30670000 0x0 0x10000>;
interrupts = <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>;
#interrupt-cells = <3>;
interrupt-parent = <&gic>;
+
+ pgc {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ /*
+ * As per comment in ATF source code:
+ *
+ * PCIE1 and PCIE2 share the
+ * same reset signal, if we
+ * power down PCIE2, PCIE1
+ * will be held in reset too.
+ *
+ * So instead of creating two
+ * separate power domains for
+ * PCIE1 and PCIE2 we create a
+ * link between both and use
+ * it as a shared PCIE power
+ * domain.
+ */
+ pgc_pcie: power-domain@1 {
+ #power-domain-cells = <0>;
+ reg = <IMX8M_POWER_DOMAIN_PCIE1>;
+ power-domains = <&pgc_pcie2>;
+ };
+
+ pgc_pcie2: power-domain@a {
+ #power-domain-cells = <0>;
+ reg = <IMX8M_POWER_DOMAIN_PCIE2>;
+ };
+ };
};
usdhc1: usdhc@30b40000 {
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2017 NXP
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <power-domain-uclass.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>
+
+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_platdata *pdata;
+ pdata = dev_get_platdata(dev);
+
+ if (pdata->resource_id < 0)
+ return -EINVAL;
+
+ if (pdata->has_pd)
+ power_domain_on(&pdata->pd);
+
+ call_imx_sip(IMX_SIP_GPC, IMX_SIP_GPC_PM_DOMAIN, pdata->resource_id, 1);
+
+ return 0;
+}
+
+static int imx8m_power_domain_off(struct power_domain *power_domain)
+{
+ struct udevice *dev = power_domain->dev;
+ struct imx8m_power_domain_platdata *pdata;
+ pdata = dev_get_platdata(dev);
+
+ if (pdata->resource_id < 0)
+ return -EINVAL;
+
+ call_imx_sip(IMX_SIP_GPC, IMX_SIP_GPC_PM_DOMAIN, pdata->resource_id, 0);
+
+ 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_ofdata_to_platdata(struct udevice *dev)
+{
+ struct imx8m_power_domain_platdata *pdata = dev_get_platdata(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" },
+ { }
+};
+
+struct power_domain_ops imx8m_power_domain_ops = {
+ .request = imx8m_power_domain_request,
+ .free = 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,
+ .ofdata_to_platdata = imx8m_power_domain_ofdata_to_platdata,
+ .platdata_auto_alloc_size = sizeof(struct imx8m_power_domain_platdata),
+ .ops = &imx8m_power_domain_ops,
+};
--- /dev/null
+/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
+/*
+ * Copyright (C) 2018 Pengutronix, Lucas Stach <kernel@pengutronix.de>
+ */
+
+#ifndef __DT_BINDINGS_IMX8MQ_POWER_H__
+#define __DT_BINDINGS_IMX8MQ_POWER_H__
+
+#define IMX8M_POWER_DOMAIN_MIPI 0
+#define IMX8M_POWER_DOMAIN_PCIE1 1
+#define IMX8M_POWER_DOMAIN_USB_OTG1 2
+#define IMX8M_POWER_DOMAIN_USB_OTG2 3
+#define IMX8M_POWER_DOMAIN_DDR1 4
+#define IMX8M_POWER_DOMAIN_GPU 5
+#define IMX8M_POWER_DOMAIN_VPU 6
+#define IMX8M_POWER_DOMAIN_DISP 7
+#define IMX8M_POWER_DOMAIN_MIPI_CSI1 8
+#define IMX8M_POWER_DOMAIN_MIPI_CSI2 9
+#define IMX8M_POWER_DOMAIN_PCIE2 10
+
+#endif
projects / platform / kernel / u-boot.git / commitdiff