diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/power/domain/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/power/domain/Makefile | 1 | ||||
| -rw-r--r-- | drivers/power/domain/imx8m-power-domain.c | 137 |
3 files changed, 145 insertions, 0 deletions
diff --git a/drivers/power/domain/Kconfig b/drivers/power/domain/Kconfig index 06bba6220b..7e2d6a90bf 100644 --- a/drivers/power/domain/Kconfig +++ b/drivers/power/domain/Kconfig @@ -23,6 +23,13 @@ config IMX8_POWER_DOMAIN Enable support for manipulating NXP i.MX8 on-SoC power domains via IPC requests to the SCU. +config IMX8M_POWER_DOMAIN + bool "Enable i.MX8M power domain driver" + depends on POWER_DOMAIN && ARCH_IMX8M + help + Enable support for manipulating NXP i.MX8M on-SoC power domains via + requests to the ATF. + config MTK_POWER_DOMAIN bool "Enable the MediaTek power domain driver" depends on POWER_DOMAIN && ARCH_MEDIATEK diff --git a/drivers/power/domain/Makefile b/drivers/power/domain/Makefile index 695aafe17d..4d87d7c7f9 100644 --- a/drivers/power/domain/Makefile +++ b/drivers/power/domain/Makefile @@ -6,6 +6,7 @@ obj-$(CONFIG_$(SPL_)POWER_DOMAIN) += power-domain-uclass.o obj-$(CONFIG_BCM6328_POWER_DOMAIN) += bcm6328-power-domain.o obj-$(CONFIG_IMX8_POWER_DOMAIN) += imx8-power-domain.o +obj-$(CONFIG_IMX8M_POWER_DOMAIN) += imx8m-power-domain.o obj-$(CONFIG_MTK_POWER_DOMAIN) += mtk-power-domain.o obj-$(CONFIG_MESON_GX_VPU_POWER_DOMAIN) += meson-gx-pwrc-vpu.o obj-$(CONFIG_SANDBOX_POWER_DOMAIN) += sandbox-power-domain.o diff --git a/drivers/power/domain/imx8m-power-domain.c b/drivers/power/domain/imx8m-power-domain.c new file mode 100644 index 0000000000..164fb3d31d --- /dev/null +++ b/drivers/power/domain/imx8m-power-domain.c @@ -0,0 +1,137 @@ +// 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, +}; |