This pull request contains Broadcom ARM/ARM64/MIPS based SoCs changes
for 5.1, please pull the following: - Stefan updates the BCM2835 SoC driver with downstream properties and uses that to implement a reboot notifier to tell the VC4 firmware when Linux on the ARM CPU is rebooting - Eric adds a proper power domain driver for the BCM283x SoCs and updates a bunch of drivers to have a better and clearer Device Tree definition to support power domains/breaking up of functionality. This requires converting the existing watchdog driver into a MFD and then breaking up the functionality into separate drivers and finally updating the DTS files to leverage the power domains information. - Wei provides a fix for making a symbol static -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEm+Rq3+YGJdiR9yuFh9CWnEQHBwQFAlxV0IYACgkQh9CWnEQH BwQIHA//TL12EfHws6C64EKspqsg9NE5/+K3HRRJbgwtuBQ/n6oYBMyJx+6x6Nwc 7QjuCkZ/VWKxy0Fn+ToGnX0JgrQL5kND3Cm0d8cyZ0VJ6juppizyAa1YkFplShSr l0XlYaJo1HrB3hBd/+YbGZnLp9flbii5d3MIcy8ZoWmN7zLeHnQbHaf8jcbJC+Iw Mal8ojk2ru0rMimMQieTiPzWwiec08wtSIYs2590rOVWFyhGIn/KmHqpG6iYjdwj oQbr86R0jMPCb/g3SXRttxW8wFbtYdmILdkzhOaEd4JyJEwUCNDciM3E04OyE9VN fNMc1l0zh7dfyo9bFRpgS6AAxYQVj3led+B1NGtpnjDPybVWU10gipGdgFt9UPRE pJnS1LcPbAJ1FdbcYFU0TsiViWLZehm2cbc4rPYvqKp1Y+82FJZTYyu0GmBOUwB6 jpM5ZVvET8k3nw6ImeE3jjT3kBfF31u552+iO4RQvKHRm/GBMtyTDrFZVUwgqMFE NEKnj3/VLSCxP3dnQImw1ro2493piZNdlBEs6mAugFUGqcb+40KOtOOpWiGMFH7h BZN0kj128ryG/YCVKDOnZSbYRLhpxc1VcVYJ3rYJgn8mrFFmNo/fjDgaRogrJN/s LmCiSIqsmuy8f36/IWd+aHk6ex5yskJe7x5M/7tlmz03oXg1viQ= =t5+u -----END PGP SIGNATURE----- Merge tag 'arm-soc/for-5.1/drivers' of https://github.com/Broadcom/stblinux into arm/drivers This pull request contains Broadcom ARM/ARM64/MIPS based SoCs changes for 5.1, please pull the following: - Stefan updates the BCM2835 SoC driver with downstream properties and uses that to implement a reboot notifier to tell the VC4 firmware when Linux on the ARM CPU is rebooting - Eric adds a proper power domain driver for the BCM283x SoCs and updates a bunch of drivers to have a better and clearer Device Tree definition to support power domains/breaking up of functionality. This requires converting the existing watchdog driver into a MFD and then breaking up the functionality into separate drivers and finally updating the DTS files to leverage the power domains information. - Wei provides a fix for making a symbol static * tag 'arm-soc/for-5.1/drivers' of https://github.com/Broadcom/stblinux: ARM: bcm283x: Switch V3D over to using the PM driver instead of firmware. ARM: bcm283x: Extend the WDT DT node out to cover the whole PM block. (v4) soc: bcm: bcm2835-pm: Make local symbol static soc: bcm: Make PM driver default for BCM2835 soc: bcm: bcm2835-pm: Add support for power domains under a new binding. bcm2835-pm: Move bcm2835-watchdog's DT probe to an MFD. dt-bindings: soc: Add a new binding for the BCM2835 PM node. (v4) firmware: raspberrypi: notify VC4 firmware of a reboot soc: bcm2835: sync firmware properties with downstream Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann
Коммит
187b4ac7df
|
|
@ -0,0 +1,46 @@
|
|||
BCM2835 PM (Power domains, watchdog)
|
||||
|
||||
The PM block controls power domains and some reset lines, and includes
|
||||
a watchdog timer. This binding supersedes the brcm,bcm2835-pm-wdt
|
||||
binding which covered some of PM's register range and functionality.
|
||||
|
||||
Required properties:
|
||||
|
||||
- compatible: Should be "brcm,bcm2835-pm"
|
||||
- reg: Specifies base physical address and size of the two
|
||||
register ranges ("PM" and "ASYNC_BRIDGE" in that
|
||||
order)
|
||||
- clocks: a) v3d: The V3D clock from CPRMAN
|
||||
b) peri_image: The PERI_IMAGE clock from CPRMAN
|
||||
c) h264: The H264 clock from CPRMAN
|
||||
d) isp: The ISP clock from CPRMAN
|
||||
- #reset-cells: Should be 1. This property follows the reset controller
|
||||
bindings[1].
|
||||
- #power-domain-cells: Should be 1. This property follows the power domain
|
||||
bindings[2].
|
||||
|
||||
Optional properties:
|
||||
|
||||
- timeout-sec: Contains the watchdog timeout in seconds
|
||||
- system-power-controller: Whether the watchdog is controlling the
|
||||
system power. This node follows the power controller bindings[3].
|
||||
|
||||
[1] Documentation/devicetree/bindings/reset/reset.txt
|
||||
[2] Documentation/devicetree/bindings/power/power_domain.txt
|
||||
[3] Documentation/devicetree/bindings/power/power-controller.txt
|
||||
|
||||
Example:
|
||||
|
||||
pm {
|
||||
compatible = "brcm,bcm2835-pm", "brcm,bcm2835-pm-wdt";
|
||||
#power-domain-cells = <1>;
|
||||
#reset-cells = <1>;
|
||||
reg = <0x7e100000 0x114>,
|
||||
<0x7e00a000 0x24>;
|
||||
clocks = <&clocks BCM2835_CLOCK_V3D>,
|
||||
<&clocks BCM2835_CLOCK_PERI_IMAGE>,
|
||||
<&clocks BCM2835_CLOCK_H264>,
|
||||
<&clocks BCM2835_CLOCK_ISP>;
|
||||
clock-names = "v3d", "peri_image", "h264", "isp";
|
||||
system-power-controller;
|
||||
};
|
||||
|
|
@ -87,10 +87,6 @@
|
|||
power-domains = <&power RPI_POWER_DOMAIN_USB>;
|
||||
};
|
||||
|
||||
&v3d {
|
||||
power-domains = <&power RPI_POWER_DOMAIN_V3D>;
|
||||
};
|
||||
|
||||
&hdmi {
|
||||
power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
|
||||
status = "okay";
|
||||
|
|
|
|||
|
|
@ -3,6 +3,7 @@
|
|||
#include <dt-bindings/clock/bcm2835-aux.h>
|
||||
#include <dt-bindings/gpio/gpio.h>
|
||||
#include <dt-bindings/interrupt-controller/irq.h>
|
||||
#include <dt-bindings/soc/bcm2835-pm.h>
|
||||
|
||||
/* firmware-provided startup stubs live here, where the secondary CPUs are
|
||||
* spinning.
|
||||
|
|
@ -120,9 +121,18 @@
|
|||
#interrupt-cells = <2>;
|
||||
};
|
||||
|
||||
watchdog@7e100000 {
|
||||
compatible = "brcm,bcm2835-pm-wdt";
|
||||
reg = <0x7e100000 0x28>;
|
||||
pm: watchdog@7e100000 {
|
||||
compatible = "brcm,bcm2835-pm", "brcm,bcm2835-pm-wdt";
|
||||
#power-domain-cells = <1>;
|
||||
#reset-cells = <1>;
|
||||
reg = <0x7e100000 0x114>,
|
||||
<0x7e00a000 0x24>;
|
||||
clocks = <&clocks BCM2835_CLOCK_V3D>,
|
||||
<&clocks BCM2835_CLOCK_PERI_IMAGE>,
|
||||
<&clocks BCM2835_CLOCK_H264>,
|
||||
<&clocks BCM2835_CLOCK_ISP>;
|
||||
clock-names = "v3d", "peri_image", "h264", "isp";
|
||||
system-power-controller;
|
||||
};
|
||||
|
||||
clocks: cprman@7e101000 {
|
||||
|
|
@ -629,6 +639,7 @@
|
|||
compatible = "brcm,bcm2835-v3d";
|
||||
reg = <0x7ec00000 0x1000>;
|
||||
interrupts = <1 10>;
|
||||
power-domains = <&pm BCM2835_POWER_DOMAIN_GRAFX_V3D>;
|
||||
};
|
||||
|
||||
vc4: gpu {
|
||||
|
|
|
|||
|
|
@ -167,6 +167,7 @@ config ARCH_BCM2835
|
|||
select BCM2835_TIMER
|
||||
select PINCTRL
|
||||
select PINCTRL_BCM2835
|
||||
select MFD_CORE
|
||||
help
|
||||
This enables support for the Broadcom BCM2835 and BCM2836 SoCs.
|
||||
This SoC is used in the Raspberry Pi and Roku 2 devices.
|
||||
|
|
|
|||
|
|
@ -238,6 +238,16 @@ static int rpi_firmware_probe(struct platform_device *pdev)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static void rpi_firmware_shutdown(struct platform_device *pdev)
|
||||
{
|
||||
struct rpi_firmware *fw = platform_get_drvdata(pdev);
|
||||
|
||||
if (!fw)
|
||||
return;
|
||||
|
||||
rpi_firmware_property(fw, RPI_FIRMWARE_NOTIFY_REBOOT, NULL, 0);
|
||||
}
|
||||
|
||||
static int rpi_firmware_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct rpi_firmware *fw = platform_get_drvdata(pdev);
|
||||
|
|
@ -278,6 +288,7 @@ static struct platform_driver rpi_firmware_driver = {
|
|||
.of_match_table = rpi_firmware_of_match,
|
||||
},
|
||||
.probe = rpi_firmware_probe,
|
||||
.shutdown = rpi_firmware_shutdown,
|
||||
.remove = rpi_firmware_remove,
|
||||
};
|
||||
module_platform_driver(rpi_firmware_driver);
|
||||
|
|
|
|||
|
|
@ -10,6 +10,7 @@ obj-$(CONFIG_MFD_88PM805) += 88pm805.o 88pm80x.o
|
|||
obj-$(CONFIG_MFD_ACT8945A) += act8945a.o
|
||||
obj-$(CONFIG_MFD_SM501) += sm501.o
|
||||
obj-$(CONFIG_MFD_ASIC3) += asic3.o tmio_core.o
|
||||
obj-$(CONFIG_ARCH_BCM2835) += bcm2835-pm.o
|
||||
obj-$(CONFIG_MFD_BCM590XX) += bcm590xx.o
|
||||
obj-$(CONFIG_MFD_BD9571MWV) += bd9571mwv.o
|
||||
cros_ec_core-objs := cros_ec.o
|
||||
|
|
|
|||
|
|
@ -0,0 +1,92 @@
|
|||
// SPDX-License-Identifier: GPL-2.0+
|
||||
/*
|
||||
* PM MFD driver for Broadcom BCM2835
|
||||
*
|
||||
* This driver binds to the PM block and creates the MFD device for
|
||||
* the WDT and power drivers.
|
||||
*/
|
||||
|
||||
#include <linux/delay.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/mfd/bcm2835-pm.h>
|
||||
#include <linux/mfd/core.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/of_address.h>
|
||||
#include <linux/of_platform.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/watchdog.h>
|
||||
|
||||
static const struct mfd_cell bcm2835_pm_devs[] = {
|
||||
{ .name = "bcm2835-wdt" },
|
||||
};
|
||||
|
||||
static const struct mfd_cell bcm2835_power_devs[] = {
|
||||
{ .name = "bcm2835-power" },
|
||||
};
|
||||
|
||||
static int bcm2835_pm_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct resource *res;
|
||||
struct device *dev = &pdev->dev;
|
||||
struct bcm2835_pm *pm;
|
||||
int ret;
|
||||
|
||||
pm = devm_kzalloc(dev, sizeof(*pm), GFP_KERNEL);
|
||||
if (!pm)
|
||||
return -ENOMEM;
|
||||
platform_set_drvdata(pdev, pm);
|
||||
|
||||
pm->dev = dev;
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
pm->base = devm_ioremap_resource(dev, res);
|
||||
if (IS_ERR(pm->base))
|
||||
return PTR_ERR(pm->base);
|
||||
|
||||
ret = devm_mfd_add_devices(dev, -1,
|
||||
bcm2835_pm_devs, ARRAY_SIZE(bcm2835_pm_devs),
|
||||
NULL, 0, NULL);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* We'll use the presence of the AXI ASB regs in the
|
||||
* bcm2835-pm binding as the key for whether we can reference
|
||||
* the full PM register range and support power domains.
|
||||
*/
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
|
||||
if (res) {
|
||||
pm->asb = devm_ioremap_resource(dev, res);
|
||||
if (IS_ERR(pm->asb))
|
||||
return PTR_ERR(pm->asb);
|
||||
|
||||
ret = devm_mfd_add_devices(dev, -1,
|
||||
bcm2835_power_devs,
|
||||
ARRAY_SIZE(bcm2835_power_devs),
|
||||
NULL, 0, NULL);
|
||||
if (ret)
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id bcm2835_pm_of_match[] = {
|
||||
{ .compatible = "brcm,bcm2835-pm-wdt", },
|
||||
{ .compatible = "brcm,bcm2835-pm", },
|
||||
{},
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, bcm2835_pm_of_match);
|
||||
|
||||
static struct platform_driver bcm2835_pm_driver = {
|
||||
.probe = bcm2835_pm_probe,
|
||||
.driver = {
|
||||
.name = "bcm2835-pm",
|
||||
.of_match_table = bcm2835_pm_of_match,
|
||||
},
|
||||
};
|
||||
module_platform_driver(bcm2835_pm_driver);
|
||||
|
||||
MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
|
||||
MODULE_DESCRIPTION("Driver for Broadcom BCM2835 PM MFD");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
|
@ -1,5 +1,17 @@
|
|||
menu "Broadcom SoC drivers"
|
||||
|
||||
config BCM2835_POWER
|
||||
bool "BCM2835 power domain driver"
|
||||
depends on ARCH_BCM2835 || (COMPILE_TEST && OF)
|
||||
default y if ARCH_BCM2835
|
||||
select PM_GENERIC_DOMAINS if PM
|
||||
select RESET_CONTROLLER
|
||||
help
|
||||
This enables support for the BCM2835 power domains and reset
|
||||
controller. Any usage of power domains by the Raspberry Pi
|
||||
firmware means that Linux usage of the same power domain
|
||||
must be accessed using the RASPBERRYPI_POWER driver
|
||||
|
||||
config RASPBERRYPI_POWER
|
||||
bool "Raspberry Pi power domain driver"
|
||||
depends on ARCH_BCM2835 || (COMPILE_TEST && OF)
|
||||
|
|
|
|||
|
|
@ -1,2 +1,3 @@
|
|||
obj-$(CONFIG_BCM2835_POWER) += bcm2835-power.o
|
||||
obj-$(CONFIG_RASPBERRYPI_POWER) += raspberrypi-power.o
|
||||
obj-$(CONFIG_SOC_BRCMSTB) += brcmstb/
|
||||
|
|
|
|||
|
|
@ -0,0 +1,661 @@
|
|||
// SPDX-License-Identifier: GPL-2.0+
|
||||
/*
|
||||
* Power domain driver for Broadcom BCM2835
|
||||
*
|
||||
* Copyright (C) 2018 Broadcom
|
||||
*/
|
||||
|
||||
#include <dt-bindings/soc/bcm2835-pm.h>
|
||||
#include <linux/clk.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/mfd/bcm2835-pm.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/pm_domain.h>
|
||||
#include <linux/reset-controller.h>
|
||||
#include <linux/types.h>
|
||||
|
||||
#define PM_GNRIC 0x00
|
||||
#define PM_AUDIO 0x04
|
||||
#define PM_STATUS 0x18
|
||||
#define PM_RSTC 0x1c
|
||||
#define PM_RSTS 0x20
|
||||
#define PM_WDOG 0x24
|
||||
#define PM_PADS0 0x28
|
||||
#define PM_PADS2 0x2c
|
||||
#define PM_PADS3 0x30
|
||||
#define PM_PADS4 0x34
|
||||
#define PM_PADS5 0x38
|
||||
#define PM_PADS6 0x3c
|
||||
#define PM_CAM0 0x44
|
||||
#define PM_CAM0_LDOHPEN BIT(2)
|
||||
#define PM_CAM0_LDOLPEN BIT(1)
|
||||
#define PM_CAM0_CTRLEN BIT(0)
|
||||
|
||||
#define PM_CAM1 0x48
|
||||
#define PM_CAM1_LDOHPEN BIT(2)
|
||||
#define PM_CAM1_LDOLPEN BIT(1)
|
||||
#define PM_CAM1_CTRLEN BIT(0)
|
||||
|
||||
#define PM_CCP2TX 0x4c
|
||||
#define PM_CCP2TX_LDOEN BIT(1)
|
||||
#define PM_CCP2TX_CTRLEN BIT(0)
|
||||
|
||||
#define PM_DSI0 0x50
|
||||
#define PM_DSI0_LDOHPEN BIT(2)
|
||||
#define PM_DSI0_LDOLPEN BIT(1)
|
||||
#define PM_DSI0_CTRLEN BIT(0)
|
||||
|
||||
#define PM_DSI1 0x54
|
||||
#define PM_DSI1_LDOHPEN BIT(2)
|
||||
#define PM_DSI1_LDOLPEN BIT(1)
|
||||
#define PM_DSI1_CTRLEN BIT(0)
|
||||
|
||||
#define PM_HDMI 0x58
|
||||
#define PM_HDMI_RSTDR BIT(19)
|
||||
#define PM_HDMI_LDOPD BIT(1)
|
||||
#define PM_HDMI_CTRLEN BIT(0)
|
||||
|
||||
#define PM_USB 0x5c
|
||||
/* The power gates must be enabled with this bit before enabling the LDO in the
|
||||
* USB block.
|
||||
*/
|
||||
#define PM_USB_CTRLEN BIT(0)
|
||||
|
||||
#define PM_PXLDO 0x60
|
||||
#define PM_PXBG 0x64
|
||||
#define PM_DFT 0x68
|
||||
#define PM_SMPS 0x6c
|
||||
#define PM_XOSC 0x70
|
||||
#define PM_SPAREW 0x74
|
||||
#define PM_SPARER 0x78
|
||||
#define PM_AVS_RSTDR 0x7c
|
||||
#define PM_AVS_STAT 0x80
|
||||
#define PM_AVS_EVENT 0x84
|
||||
#define PM_AVS_INTEN 0x88
|
||||
#define PM_DUMMY 0xfc
|
||||
|
||||
#define PM_IMAGE 0x108
|
||||
#define PM_GRAFX 0x10c
|
||||
#define PM_PROC 0x110
|
||||
#define PM_ENAB BIT(12)
|
||||
#define PM_ISPRSTN BIT(8)
|
||||
#define PM_H264RSTN BIT(7)
|
||||
#define PM_PERIRSTN BIT(6)
|
||||
#define PM_V3DRSTN BIT(6)
|
||||
#define PM_ISFUNC BIT(5)
|
||||
#define PM_MRDONE BIT(4)
|
||||
#define PM_MEMREP BIT(3)
|
||||
#define PM_ISPOW BIT(2)
|
||||
#define PM_POWOK BIT(1)
|
||||
#define PM_POWUP BIT(0)
|
||||
#define PM_INRUSH_SHIFT 13
|
||||
#define PM_INRUSH_3_5_MA 0
|
||||
#define PM_INRUSH_5_MA 1
|
||||
#define PM_INRUSH_10_MA 2
|
||||
#define PM_INRUSH_20_MA 3
|
||||
#define PM_INRUSH_MASK (3 << PM_INRUSH_SHIFT)
|
||||
|
||||
#define PM_PASSWORD 0x5a000000
|
||||
|
||||
#define PM_WDOG_TIME_SET 0x000fffff
|
||||
#define PM_RSTC_WRCFG_CLR 0xffffffcf
|
||||
#define PM_RSTS_HADWRH_SET 0x00000040
|
||||
#define PM_RSTC_WRCFG_SET 0x00000030
|
||||
#define PM_RSTC_WRCFG_FULL_RESET 0x00000020
|
||||
#define PM_RSTC_RESET 0x00000102
|
||||
|
||||
#define PM_READ(reg) readl(power->base + (reg))
|
||||
#define PM_WRITE(reg, val) writel(PM_PASSWORD | (val), power->base + (reg))
|
||||
|
||||
#define ASB_BRDG_VERSION 0x00
|
||||
#define ASB_CPR_CTRL 0x04
|
||||
|
||||
#define ASB_V3D_S_CTRL 0x08
|
||||
#define ASB_V3D_M_CTRL 0x0c
|
||||
#define ASB_ISP_S_CTRL 0x10
|
||||
#define ASB_ISP_M_CTRL 0x14
|
||||
#define ASB_H264_S_CTRL 0x18
|
||||
#define ASB_H264_M_CTRL 0x1c
|
||||
|
||||
#define ASB_REQ_STOP BIT(0)
|
||||
#define ASB_ACK BIT(1)
|
||||
#define ASB_EMPTY BIT(2)
|
||||
#define ASB_FULL BIT(3)
|
||||
|
||||
#define ASB_AXI_BRDG_ID 0x20
|
||||
|
||||
#define ASB_READ(reg) readl(power->asb + (reg))
|
||||
#define ASB_WRITE(reg, val) writel(PM_PASSWORD | (val), power->asb + (reg))
|
||||
|
||||
struct bcm2835_power_domain {
|
||||
struct generic_pm_domain base;
|
||||
struct bcm2835_power *power;
|
||||
u32 domain;
|
||||
struct clk *clk;
|
||||
};
|
||||
|
||||
struct bcm2835_power {
|
||||
struct device *dev;
|
||||
/* PM registers. */
|
||||
void __iomem *base;
|
||||
/* AXI Async bridge registers. */
|
||||
void __iomem *asb;
|
||||
|
||||
struct genpd_onecell_data pd_xlate;
|
||||
struct bcm2835_power_domain domains[BCM2835_POWER_DOMAIN_COUNT];
|
||||
struct reset_controller_dev reset;
|
||||
};
|
||||
|
||||
static int bcm2835_asb_enable(struct bcm2835_power *power, u32 reg)
|
||||
{
|
||||
u64 start = ktime_get_ns();
|
||||
|
||||
/* Enable the module's async AXI bridges. */
|
||||
ASB_WRITE(reg, ASB_READ(reg) & ~ASB_REQ_STOP);
|
||||
while (ASB_READ(reg) & ASB_ACK) {
|
||||
cpu_relax();
|
||||
if (ktime_get_ns() - start >= 1000)
|
||||
return -ETIMEDOUT;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int bcm2835_asb_disable(struct bcm2835_power *power, u32 reg)
|
||||
{
|
||||
u64 start = ktime_get_ns();
|
||||
|
||||
/* Enable the module's async AXI bridges. */
|
||||
ASB_WRITE(reg, ASB_READ(reg) | ASB_REQ_STOP);
|
||||
while (!(ASB_READ(reg) & ASB_ACK)) {
|
||||
cpu_relax();
|
||||
if (ktime_get_ns() - start >= 1000)
|
||||
return -ETIMEDOUT;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int bcm2835_power_power_off(struct bcm2835_power_domain *pd, u32 pm_reg)
|
||||
{
|
||||
struct bcm2835_power *power = pd->power;
|
||||
|
||||
/* Enable functional isolation */
|
||||
PM_WRITE(pm_reg, PM_READ(pm_reg) & ~PM_ISFUNC);
|
||||
|
||||
/* Enable electrical isolation */
|
||||
PM_WRITE(pm_reg, PM_READ(pm_reg) & ~PM_ISPOW);
|
||||
|
||||
/* Open the power switches. */
|
||||
PM_WRITE(pm_reg, PM_READ(pm_reg) & ~PM_POWUP);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int bcm2835_power_power_on(struct bcm2835_power_domain *pd, u32 pm_reg)
|
||||
{
|
||||
struct bcm2835_power *power = pd->power;
|
||||
struct device *dev = power->dev;
|
||||
u64 start;
|
||||
int ret;
|
||||
int inrush;
|
||||
bool powok;
|
||||
|
||||
/* If it was already powered on by the fw, leave it that way. */
|
||||
if (PM_READ(pm_reg) & PM_POWUP)
|
||||
return 0;
|
||||
|
||||
/* Enable power. Allowing too much current at once may result
|
||||
* in POWOK never getting set, so start low and ramp it up as
|
||||
* necessary to succeed.
|
||||
*/
|
||||
powok = false;
|
||||
for (inrush = PM_INRUSH_3_5_MA; inrush <= PM_INRUSH_20_MA; inrush++) {
|
||||
PM_WRITE(pm_reg,
|
||||
(PM_READ(pm_reg) & ~PM_INRUSH_MASK) |
|
||||
(inrush << PM_INRUSH_SHIFT) |
|
||||
PM_POWUP);
|
||||
|
||||
start = ktime_get_ns();
|
||||
while (!(powok = !!(PM_READ(pm_reg) & PM_POWOK))) {
|
||||
cpu_relax();
|
||||
if (ktime_get_ns() - start >= 3000)
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (!powok) {
|
||||
dev_err(dev, "Timeout waiting for %s power OK\n",
|
||||
pd->base.name);
|
||||
ret = -ETIMEDOUT;
|
||||
goto err_disable_powup;
|
||||
}
|
||||
|
||||
/* Disable electrical isolation */
|
||||
PM_WRITE(pm_reg, PM_READ(pm_reg) | PM_ISPOW);
|
||||
|
||||
/* Repair memory */
|
||||
PM_WRITE(pm_reg, PM_READ(pm_reg) | PM_MEMREP);
|
||||
start = ktime_get_ns();
|
||||
while (!(PM_READ(pm_reg) & PM_MRDONE)) {
|
||||
cpu_relax();
|
||||
if (ktime_get_ns() - start >= 1000) {
|
||||
dev_err(dev, "Timeout waiting for %s memory repair\n",
|
||||
pd->base.name);
|
||||
ret = -ETIMEDOUT;
|
||||
goto err_disable_ispow;
|
||||
}
|
||||
}
|
||||
|
||||
/* Disable functional isolation */
|
||||
PM_WRITE(pm_reg, PM_READ(pm_reg) | PM_ISFUNC);
|
||||
|
||||
return 0;
|
||||
|
||||
err_disable_ispow:
|
||||
PM_WRITE(pm_reg, PM_READ(pm_reg) & ~PM_ISPOW);
|
||||
err_disable_powup:
|
||||
PM_WRITE(pm_reg, PM_READ(pm_reg) & ~(PM_POWUP | PM_INRUSH_MASK));
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int bcm2835_asb_power_on(struct bcm2835_power_domain *pd,
|
||||
u32 pm_reg,
|
||||
u32 asb_m_reg,
|
||||
u32 asb_s_reg,
|
||||
u32 reset_flags)
|
||||
{
|
||||
struct bcm2835_power *power = pd->power;
|
||||
int ret;
|
||||
|
||||
ret = clk_prepare_enable(pd->clk);
|
||||
if (ret) {
|
||||
dev_err(power->dev, "Failed to enable clock for %s\n",
|
||||
pd->base.name);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Wait 32 clocks for reset to propagate, 1 us will be enough */
|
||||
udelay(1);
|
||||
|
||||
clk_disable_unprepare(pd->clk);
|
||||
|
||||
/* Deassert the resets. */
|
||||
PM_WRITE(pm_reg, PM_READ(pm_reg) | reset_flags);
|
||||
|
||||
ret = clk_prepare_enable(pd->clk);
|
||||
if (ret) {
|
||||
dev_err(power->dev, "Failed to enable clock for %s\n",
|
||||
pd->base.name);
|
||||
goto err_enable_resets;
|
||||
}
|
||||
|
||||
ret = bcm2835_asb_enable(power, asb_m_reg);
|
||||
if (ret) {
|
||||
dev_err(power->dev, "Failed to enable ASB master for %s\n",
|
||||
pd->base.name);
|
||||
goto err_disable_clk;
|
||||
}
|
||||
ret = bcm2835_asb_enable(power, asb_s_reg);
|
||||
if (ret) {
|
||||
dev_err(power->dev, "Failed to enable ASB slave for %s\n",
|
||||
pd->base.name);
|
||||
goto err_disable_asb_master;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
err_disable_asb_master:
|
||||
bcm2835_asb_disable(power, asb_m_reg);
|
||||
err_disable_clk:
|
||||
clk_disable_unprepare(pd->clk);
|
||||
err_enable_resets:
|
||||
PM_WRITE(pm_reg, PM_READ(pm_reg) & ~reset_flags);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int bcm2835_asb_power_off(struct bcm2835_power_domain *pd,
|
||||
u32 pm_reg,
|
||||
u32 asb_m_reg,
|
||||
u32 asb_s_reg,
|
||||
u32 reset_flags)
|
||||
{
|
||||
struct bcm2835_power *power = pd->power;
|
||||
int ret;
|
||||
|
||||
ret = bcm2835_asb_disable(power, asb_s_reg);
|
||||
if (ret) {
|
||||
dev_warn(power->dev, "Failed to disable ASB slave for %s\n",
|
||||
pd->base.name);
|
||||
return ret;
|
||||
}
|
||||
ret = bcm2835_asb_disable(power, asb_m_reg);
|
||||
if (ret) {
|
||||
dev_warn(power->dev, "Failed to disable ASB master for %s\n",
|
||||
pd->base.name);
|
||||
bcm2835_asb_enable(power, asb_s_reg);
|
||||
return ret;
|
||||
}
|
||||
|
||||
clk_disable_unprepare(pd->clk);
|
||||
|
||||
/* Assert the resets. */
|
||||
PM_WRITE(pm_reg, PM_READ(pm_reg) & ~reset_flags);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int bcm2835_power_pd_power_on(struct generic_pm_domain *domain)
|
||||
{
|
||||
struct bcm2835_power_domain *pd =
|
||||
container_of(domain, struct bcm2835_power_domain, base);
|
||||
struct bcm2835_power *power = pd->power;
|
||||
|
||||
switch (pd->domain) {
|
||||
case BCM2835_POWER_DOMAIN_GRAFX:
|
||||
return bcm2835_power_power_on(pd, PM_GRAFX);
|
||||
|
||||
case BCM2835_POWER_DOMAIN_GRAFX_V3D:
|
||||
return bcm2835_asb_power_on(pd, PM_GRAFX,
|
||||
ASB_V3D_M_CTRL, ASB_V3D_S_CTRL,
|
||||
PM_V3DRSTN);
|
||||
|
||||
case BCM2835_POWER_DOMAIN_IMAGE:
|
||||
return bcm2835_power_power_on(pd, PM_IMAGE);
|
||||
|
||||
case BCM2835_POWER_DOMAIN_IMAGE_PERI:
|
||||
return bcm2835_asb_power_on(pd, PM_IMAGE,
|
||||
0, 0,
|
||||
PM_PERIRSTN);
|
||||
|
||||
case BCM2835_POWER_DOMAIN_IMAGE_ISP:
|
||||
return bcm2835_asb_power_on(pd, PM_IMAGE,
|
||||
ASB_ISP_M_CTRL, ASB_ISP_S_CTRL,
|
||||
PM_ISPRSTN);
|
||||
|
||||
case BCM2835_POWER_DOMAIN_IMAGE_H264:
|
||||
return bcm2835_asb_power_on(pd, PM_IMAGE,
|
||||
ASB_H264_M_CTRL, ASB_H264_S_CTRL,
|
||||
PM_H264RSTN);
|
||||
|
||||
case BCM2835_POWER_DOMAIN_USB:
|
||||
PM_WRITE(PM_USB, PM_USB_CTRLEN);
|
||||
return 0;
|
||||
|
||||
case BCM2835_POWER_DOMAIN_DSI0:
|
||||
PM_WRITE(PM_DSI0, PM_DSI0_CTRLEN);
|
||||
PM_WRITE(PM_DSI0, PM_DSI0_CTRLEN | PM_DSI0_LDOHPEN);
|
||||
return 0;
|
||||
|
||||
case BCM2835_POWER_DOMAIN_DSI1:
|
||||
PM_WRITE(PM_DSI1, PM_DSI1_CTRLEN);
|
||||
PM_WRITE(PM_DSI1, PM_DSI1_CTRLEN | PM_DSI1_LDOHPEN);
|
||||
return 0;
|
||||
|
||||
case BCM2835_POWER_DOMAIN_CCP2TX:
|
||||
PM_WRITE(PM_CCP2TX, PM_CCP2TX_CTRLEN);
|
||||
PM_WRITE(PM_CCP2TX, PM_CCP2TX_CTRLEN | PM_CCP2TX_LDOEN);
|
||||
return 0;
|
||||
|
||||
case BCM2835_POWER_DOMAIN_HDMI:
|
||||
PM_WRITE(PM_HDMI, PM_READ(PM_HDMI) | PM_HDMI_RSTDR);
|
||||
PM_WRITE(PM_HDMI, PM_READ(PM_HDMI) | PM_HDMI_CTRLEN);
|
||||
PM_WRITE(PM_HDMI, PM_READ(PM_HDMI) & ~PM_HDMI_LDOPD);
|
||||
usleep_range(100, 200);
|
||||
PM_WRITE(PM_HDMI, PM_READ(PM_HDMI) & ~PM_HDMI_RSTDR);
|
||||
return 0;
|
||||
|
||||
default:
|
||||
dev_err(power->dev, "Invalid domain %d\n", pd->domain);
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
static int bcm2835_power_pd_power_off(struct generic_pm_domain *domain)
|
||||
{
|
||||
struct bcm2835_power_domain *pd =
|
||||
container_of(domain, struct bcm2835_power_domain, base);
|
||||
struct bcm2835_power *power = pd->power;
|
||||
|
||||
switch (pd->domain) {
|
||||
case BCM2835_POWER_DOMAIN_GRAFX:
|
||||
return bcm2835_power_power_off(pd, PM_GRAFX);
|
||||
|
||||
case BCM2835_POWER_DOMAIN_GRAFX_V3D:
|
||||
return bcm2835_asb_power_off(pd, PM_GRAFX,
|
||||
ASB_V3D_M_CTRL, ASB_V3D_S_CTRL,
|
||||
PM_V3DRSTN);
|
||||
|
||||
case BCM2835_POWER_DOMAIN_IMAGE:
|
||||
return bcm2835_power_power_off(pd, PM_IMAGE);
|
||||
|
||||
case BCM2835_POWER_DOMAIN_IMAGE_PERI:
|
||||
return bcm2835_asb_power_off(pd, PM_IMAGE,
|
||||
0, 0,
|
||||
PM_PERIRSTN);
|
||||
|
||||
case BCM2835_POWER_DOMAIN_IMAGE_ISP:
|
||||
return bcm2835_asb_power_off(pd, PM_IMAGE,
|
||||
ASB_ISP_M_CTRL, ASB_ISP_S_CTRL,
|
||||
PM_ISPRSTN);
|
||||
|
||||
case BCM2835_POWER_DOMAIN_IMAGE_H264:
|
||||
return bcm2835_asb_power_off(pd, PM_IMAGE,
|
||||
ASB_H264_M_CTRL, ASB_H264_S_CTRL,
|
||||
PM_H264RSTN);
|
||||
|
||||
case BCM2835_POWER_DOMAIN_USB:
|
||||
PM_WRITE(PM_USB, 0);
|
||||
return 0;
|
||||
|
||||
case BCM2835_POWER_DOMAIN_DSI0:
|
||||
PM_WRITE(PM_DSI0, PM_DSI0_CTRLEN);
|
||||
PM_WRITE(PM_DSI0, 0);
|
||||
return 0;
|
||||
|
||||
case BCM2835_POWER_DOMAIN_DSI1:
|
||||
PM_WRITE(PM_DSI1, PM_DSI1_CTRLEN);
|
||||
PM_WRITE(PM_DSI1, 0);
|
||||
return 0;
|
||||
|
||||
case BCM2835_POWER_DOMAIN_CCP2TX:
|
||||
PM_WRITE(PM_CCP2TX, PM_CCP2TX_CTRLEN);
|
||||
PM_WRITE(PM_CCP2TX, 0);
|
||||
return 0;
|
||||
|
||||
case BCM2835_POWER_DOMAIN_HDMI:
|
||||
PM_WRITE(PM_HDMI, PM_READ(PM_HDMI) | PM_HDMI_LDOPD);
|
||||
PM_WRITE(PM_HDMI, PM_READ(PM_HDMI) & ~PM_HDMI_CTRLEN);
|
||||
return 0;
|
||||
|
||||
default:
|
||||
dev_err(power->dev, "Invalid domain %d\n", pd->domain);
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
bcm2835_init_power_domain(struct bcm2835_power *power,
|
||||
int pd_xlate_index, const char *name)
|
||||
{
|
||||
struct device *dev = power->dev;
|
||||
struct bcm2835_power_domain *dom = &power->domains[pd_xlate_index];
|
||||
|
||||
dom->clk = devm_clk_get(dev->parent, name);
|
||||
|
||||
dom->base.name = name;
|
||||
dom->base.power_on = bcm2835_power_pd_power_on;
|
||||
dom->base.power_off = bcm2835_power_pd_power_off;
|
||||
|
||||
dom->domain = pd_xlate_index;
|
||||
dom->power = power;
|
||||
|
||||
/* XXX: on/off at boot? */
|
||||
pm_genpd_init(&dom->base, NULL, true);
|
||||
|
||||
power->pd_xlate.domains[pd_xlate_index] = &dom->base;
|
||||
}
|
||||
|
||||
/** bcm2835_reset_reset - Resets a block that has a reset line in the
|
||||
* PM block.
|
||||
*
|
||||
* The consumer of the reset controller must have the power domain up
|
||||
* -- there's no reset ability with the power domain down. To reset
|
||||
* the sub-block, we just disable its access to memory through the
|
||||
* ASB, reset, and re-enable.
|
||||
*/
|
||||
static int bcm2835_reset_reset(struct reset_controller_dev *rcdev,
|
||||
unsigned long id)
|
||||
{
|
||||
struct bcm2835_power *power = container_of(rcdev, struct bcm2835_power,
|
||||
reset);
|
||||
struct bcm2835_power_domain *pd;
|
||||
int ret;
|
||||
|
||||
switch (id) {
|
||||
case BCM2835_RESET_V3D:
|
||||
pd = &power->domains[BCM2835_POWER_DOMAIN_GRAFX_V3D];
|
||||
break;
|
||||
case BCM2835_RESET_H264:
|
||||
pd = &power->domains[BCM2835_POWER_DOMAIN_IMAGE_H264];
|
||||
break;
|
||||
case BCM2835_RESET_ISP:
|
||||
pd = &power->domains[BCM2835_POWER_DOMAIN_IMAGE_ISP];
|
||||
break;
|
||||
default:
|
||||
dev_err(power->dev, "Bad reset id %ld\n", id);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
ret = bcm2835_power_pd_power_off(&pd->base);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
return bcm2835_power_pd_power_on(&pd->base);
|
||||
}
|
||||
|
||||
static int bcm2835_reset_status(struct reset_controller_dev *rcdev,
|
||||
unsigned long id)
|
||||
{
|
||||
struct bcm2835_power *power = container_of(rcdev, struct bcm2835_power,
|
||||
reset);
|
||||
|
||||
switch (id) {
|
||||
case BCM2835_RESET_V3D:
|
||||
return !PM_READ(PM_GRAFX & PM_V3DRSTN);
|
||||
case BCM2835_RESET_H264:
|
||||
return !PM_READ(PM_IMAGE & PM_H264RSTN);
|
||||
case BCM2835_RESET_ISP:
|
||||
return !PM_READ(PM_IMAGE & PM_ISPRSTN);
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
static const struct reset_control_ops bcm2835_reset_ops = {
|
||||
.reset = bcm2835_reset_reset,
|
||||
.status = bcm2835_reset_status,
|
||||
};
|
||||
|
||||
static const char *const power_domain_names[] = {
|
||||
[BCM2835_POWER_DOMAIN_GRAFX] = "grafx",
|
||||
[BCM2835_POWER_DOMAIN_GRAFX_V3D] = "v3d",
|
||||
|
||||
[BCM2835_POWER_DOMAIN_IMAGE] = "image",
|
||||
[BCM2835_POWER_DOMAIN_IMAGE_PERI] = "peri_image",
|
||||
[BCM2835_POWER_DOMAIN_IMAGE_H264] = "h264",
|
||||
[BCM2835_POWER_DOMAIN_IMAGE_ISP] = "isp",
|
||||
|
||||
[BCM2835_POWER_DOMAIN_USB] = "usb",
|
||||
[BCM2835_POWER_DOMAIN_DSI0] = "dsi0",
|
||||
[BCM2835_POWER_DOMAIN_DSI1] = "dsi1",
|
||||
[BCM2835_POWER_DOMAIN_CAM0] = "cam0",
|
||||
[BCM2835_POWER_DOMAIN_CAM1] = "cam1",
|
||||
[BCM2835_POWER_DOMAIN_CCP2TX] = "ccp2tx",
|
||||
[BCM2835_POWER_DOMAIN_HDMI] = "hdmi",
|
||||
};
|
||||
|
||||
static int bcm2835_power_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct bcm2835_pm *pm = dev_get_drvdata(pdev->dev.parent);
|
||||
struct device *dev = &pdev->dev;
|
||||
struct bcm2835_power *power;
|
||||
static const struct {
|
||||
int parent, child;
|
||||
} domain_deps[] = {
|
||||
{ BCM2835_POWER_DOMAIN_GRAFX, BCM2835_POWER_DOMAIN_GRAFX_V3D },
|
||||
{ BCM2835_POWER_DOMAIN_IMAGE, BCM2835_POWER_DOMAIN_IMAGE_PERI },
|
||||
{ BCM2835_POWER_DOMAIN_IMAGE, BCM2835_POWER_DOMAIN_IMAGE_H264 },
|
||||
{ BCM2835_POWER_DOMAIN_IMAGE, BCM2835_POWER_DOMAIN_IMAGE_ISP },
|
||||
{ BCM2835_POWER_DOMAIN_IMAGE_PERI, BCM2835_POWER_DOMAIN_USB },
|
||||
{ BCM2835_POWER_DOMAIN_IMAGE_PERI, BCM2835_POWER_DOMAIN_CAM0 },
|
||||
{ BCM2835_POWER_DOMAIN_IMAGE_PERI, BCM2835_POWER_DOMAIN_CAM1 },
|
||||
};
|
||||
int ret, i;
|
||||
u32 id;
|
||||
|
||||
power = devm_kzalloc(dev, sizeof(*power), GFP_KERNEL);
|
||||
if (!power)
|
||||
return -ENOMEM;
|
||||
platform_set_drvdata(pdev, power);
|
||||
|
||||
power->dev = dev;
|
||||
power->base = pm->base;
|
||||
power->asb = pm->asb;
|
||||
|
||||
id = ASB_READ(ASB_AXI_BRDG_ID);
|
||||
if (id != 0x62726467 /* "BRDG" */) {
|
||||
dev_err(dev, "ASB register ID returned 0x%08x\n", id);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
power->pd_xlate.domains = devm_kcalloc(dev,
|
||||
ARRAY_SIZE(power_domain_names),
|
||||
sizeof(*power->pd_xlate.domains),
|
||||
GFP_KERNEL);
|
||||
if (!power->pd_xlate.domains)
|
||||
return -ENOMEM;
|
||||
|
||||
power->pd_xlate.num_domains = ARRAY_SIZE(power_domain_names);
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(power_domain_names); i++)
|
||||
bcm2835_init_power_domain(power, i, power_domain_names[i]);
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(domain_deps); i++) {
|
||||
pm_genpd_add_subdomain(&power->domains[domain_deps[i].parent].base,
|
||||
&power->domains[domain_deps[i].child].base);
|
||||
}
|
||||
|
||||
power->reset.owner = THIS_MODULE;
|
||||
power->reset.nr_resets = BCM2835_RESET_COUNT;
|
||||
power->reset.ops = &bcm2835_reset_ops;
|
||||
power->reset.of_node = dev->parent->of_node;
|
||||
|
||||
ret = devm_reset_controller_register(dev, &power->reset);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
of_genpd_add_provider_onecell(dev->parent->of_node, &power->pd_xlate);
|
||||
|
||||
dev_info(dev, "Broadcom BCM2835 power domains driver");
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int bcm2835_power_remove(struct platform_device *pdev)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver bcm2835_power_driver = {
|
||||
.probe = bcm2835_power_probe,
|
||||
.remove = bcm2835_power_remove,
|
||||
.driver = {
|
||||
.name = "bcm2835-power",
|
||||
},
|
||||
};
|
||||
module_platform_driver(bcm2835_power_driver);
|
||||
|
||||
MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
|
||||
MODULE_DESCRIPTION("Driver for Broadcom BCM2835 PM power domains and reset");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
|
@ -12,6 +12,7 @@
|
|||
|
||||
#include <linux/delay.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/mfd/bcm2835-pm.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/watchdog.h>
|
||||
|
|
@ -47,6 +48,8 @@ struct bcm2835_wdt {
|
|||
spinlock_t lock;
|
||||
};
|
||||
|
||||
static struct bcm2835_wdt *bcm2835_power_off_wdt;
|
||||
|
||||
static unsigned int heartbeat;
|
||||
static bool nowayout = WATCHDOG_NOWAYOUT;
|
||||
|
||||
|
|
@ -148,10 +151,7 @@ static struct watchdog_device bcm2835_wdt_wdd = {
|
|||
*/
|
||||
static void bcm2835_power_off(void)
|
||||
{
|
||||
struct device_node *np =
|
||||
of_find_compatible_node(NULL, NULL, "brcm,bcm2835-pm-wdt");
|
||||
struct platform_device *pdev = of_find_device_by_node(np);
|
||||
struct bcm2835_wdt *wdt = platform_get_drvdata(pdev);
|
||||
struct bcm2835_wdt *wdt = bcm2835_power_off_wdt;
|
||||
u32 val;
|
||||
|
||||
/*
|
||||
|
|
@ -169,7 +169,7 @@ static void bcm2835_power_off(void)
|
|||
|
||||
static int bcm2835_wdt_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct resource *res;
|
||||
struct bcm2835_pm *pm = dev_get_drvdata(pdev->dev.parent);
|
||||
struct device *dev = &pdev->dev;
|
||||
struct bcm2835_wdt *wdt;
|
||||
int err;
|
||||
|
|
@ -181,10 +181,7 @@ static int bcm2835_wdt_probe(struct platform_device *pdev)
|
|||
|
||||
spin_lock_init(&wdt->lock);
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
wdt->base = devm_ioremap_resource(dev, res);
|
||||
if (IS_ERR(wdt->base))
|
||||
return PTR_ERR(wdt->base);
|
||||
wdt->base = pm->base;
|
||||
|
||||
watchdog_set_drvdata(&bcm2835_wdt_wdd, wdt);
|
||||
watchdog_init_timeout(&bcm2835_wdt_wdd, heartbeat, dev);
|
||||
|
|
@ -211,8 +208,10 @@ static int bcm2835_wdt_probe(struct platform_device *pdev)
|
|||
return err;
|
||||
}
|
||||
|
||||
if (pm_power_off == NULL)
|
||||
if (pm_power_off == NULL) {
|
||||
pm_power_off = bcm2835_power_off;
|
||||
bcm2835_power_off_wdt = wdt;
|
||||
}
|
||||
|
||||
dev_info(dev, "Broadcom BCM2835 watchdog timer");
|
||||
return 0;
|
||||
|
|
@ -226,18 +225,11 @@ static int bcm2835_wdt_remove(struct platform_device *pdev)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id bcm2835_wdt_of_match[] = {
|
||||
{ .compatible = "brcm,bcm2835-pm-wdt", },
|
||||
{},
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, bcm2835_wdt_of_match);
|
||||
|
||||
static struct platform_driver bcm2835_wdt_driver = {
|
||||
.probe = bcm2835_wdt_probe,
|
||||
.remove = bcm2835_wdt_remove,
|
||||
.driver = {
|
||||
.name = "bcm2835-wdt",
|
||||
.of_match_table = bcm2835_wdt_of_match,
|
||||
},
|
||||
};
|
||||
module_platform_driver(bcm2835_wdt_driver);
|
||||
|
|
|
|||
|
|
@ -0,0 +1,28 @@
|
|||
/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
|
||||
|
||||
#ifndef _DT_BINDINGS_ARM_BCM2835_PM_H
|
||||
#define _DT_BINDINGS_ARM_BCM2835_PM_H
|
||||
|
||||
#define BCM2835_POWER_DOMAIN_GRAFX 0
|
||||
#define BCM2835_POWER_DOMAIN_GRAFX_V3D 1
|
||||
#define BCM2835_POWER_DOMAIN_IMAGE 2
|
||||
#define BCM2835_POWER_DOMAIN_IMAGE_PERI 3
|
||||
#define BCM2835_POWER_DOMAIN_IMAGE_ISP 4
|
||||
#define BCM2835_POWER_DOMAIN_IMAGE_H264 5
|
||||
#define BCM2835_POWER_DOMAIN_USB 6
|
||||
#define BCM2835_POWER_DOMAIN_DSI0 7
|
||||
#define BCM2835_POWER_DOMAIN_DSI1 8
|
||||
#define BCM2835_POWER_DOMAIN_CAM0 9
|
||||
#define BCM2835_POWER_DOMAIN_CAM1 10
|
||||
#define BCM2835_POWER_DOMAIN_CCP2TX 11
|
||||
#define BCM2835_POWER_DOMAIN_HDMI 12
|
||||
|
||||
#define BCM2835_POWER_DOMAIN_COUNT 13
|
||||
|
||||
#define BCM2835_RESET_V3D 0
|
||||
#define BCM2835_RESET_ISP 1
|
||||
#define BCM2835_RESET_H264 2
|
||||
|
||||
#define BCM2835_RESET_COUNT 3
|
||||
|
||||
#endif /* _DT_BINDINGS_ARM_BCM2835_PM_H */
|
||||
|
|
@ -0,0 +1,14 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0+ */
|
||||
|
||||
#ifndef BCM2835_MFD_PM_H
|
||||
#define BCM2835_MFD_PM_H
|
||||
|
||||
#include <linux/regmap.h>
|
||||
|
||||
struct bcm2835_pm {
|
||||
struct device *dev;
|
||||
void __iomem *base;
|
||||
void __iomem *asb;
|
||||
};
|
||||
|
||||
#endif /* BCM2835_MFD_PM_H */
|
||||
|
|
@ -73,6 +73,8 @@ enum rpi_firmware_property_tag {
|
|||
RPI_FIRMWARE_GET_CUSTOMER_OTP = 0x00030021,
|
||||
RPI_FIRMWARE_GET_DOMAIN_STATE = 0x00030030,
|
||||
RPI_FIRMWARE_GET_THROTTLED = 0x00030046,
|
||||
RPI_FIRMWARE_GET_CLOCK_MEASURED = 0x00030047,
|
||||
RPI_FIRMWARE_NOTIFY_REBOOT = 0x00030048,
|
||||
RPI_FIRMWARE_SET_CLOCK_STATE = 0x00038001,
|
||||
RPI_FIRMWARE_SET_CLOCK_RATE = 0x00038002,
|
||||
RPI_FIRMWARE_SET_VOLTAGE = 0x00038003,
|
||||
|
|
@ -86,6 +88,8 @@ enum rpi_firmware_property_tag {
|
|||
RPI_FIRMWARE_SET_GPIO_CONFIG = 0x00038043,
|
||||
RPI_FIRMWARE_GET_PERIPH_REG = 0x00030045,
|
||||
RPI_FIRMWARE_SET_PERIPH_REG = 0x00038045,
|
||||
RPI_FIRMWARE_GET_POE_HAT_VAL = 0x00030049,
|
||||
RPI_FIRMWARE_SET_POE_HAT_VAL = 0x00030050,
|
||||
|
||||
|
||||
/* Dispmanx TAGS */
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче