linux-dev/drivers/soc/tegra/pmc.c, branch linus/master

Merge tag 'pm-5.19-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2022-05-30T18:37:26Z

Pull more power management updates from Rafael Wysocki: "These update the ARM cpufreq drivers and fix up the CPPC cpufreq driver after recent changes, update the OPP code and PM documentation and add power sequences support to the system reboot and power off code. Specifics: - Add Tegra234 cpufreq support (Sumit Gupta) - Clean up and enhance the Mediatek cpufreq driver (Wan Jiabing, Rex-BC Chen, and Jia-Wei Chang) - Fix up the CPPC cpufreq driver after recent changes (Zheng Bin, Pierre Gondois) - Minor update to dt-binding for Qcom's opp-v2-kryo-cpu (Yassine Oudjana) - Use list iterator only inside the list_for_each_entry loop (Xiaomeng Tong, and Jakob Koschel) - New APIs related to finding OPP based on interconnect bandwidth (Krzysztof Kozlowski) - Fix the missing of_node_put() in _bandwidth_supported() (Dan Carpenter) - Cleanups (Krzysztof Kozlowski, and Viresh Kumar) - Add Out of Band mode description to the intel-speed-select utility documentation (Srinivas Pandruvada) - Add power sequences support to the system reboot and power off code and make related platform-specific changes for multiple platforms (Dmitry Osipenko, Geert Uytterhoeven)" * tag 'pm-5.19-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (60 commits) cpufreq: CPPC: Fix unused-function warning cpufreq: CPPC: Fix build error without CONFIG_ACPI_CPPC_CPUFREQ_FIE Documentation: admin-guide: PM: Add Out of Band mode kernel/reboot: Change registration order of legacy power-off handler m68k: virt: Switch to new sys-off handler API kernel/reboot: Add devm_register_restart_handler() kernel/reboot: Add devm_register_power_off_handler() soc/tegra: pmc: Use sys-off handler API to power off Nexus 7 properly reboot: Remove pm_power_off_prepare() regulator: pfuze100: Use devm_register_sys_off_handler() ACPI: power: Switch to sys-off handler API memory: emif: Use kernel_can_power_off() mips: Use do_kernel_power_off() ia64: Use do_kernel_power_off() x86: Use do_kernel_power_off() sh: Use do_kernel_power_off() m68k: Switch to new sys-off handler API powerpc: Use do_kernel_power_off() xen/x86: Use do_kernel_power_off() parisc: Use do_kernel_power_off() ...

soc/tegra: pmc: Use sys-off handler API to power off Nexus 7 properly

2022-05-19T17:30:31Z

Nexus 7 Android tablet can be turned off using a special bootloader command which is conveyed to bootloader by putting magic value into the special scratch register and then rebooting normally. This power-off method should be invoked if USB cable is connected. Bootloader then will display battery status and power off the device. This behaviour is borrowed from downstream kernel and matches user expectations, otherwise it looks like device got hung during power-off and it may wake up on USB disconnect. Switch PMC driver to sys-off handler API, which provides drivers with chained power-off callbacks functionality that is required for powering-off devices properly. It also brings resource-managed API for the restart handler registration that makes PMC driver code cleaner. Signed-off-by: Dmitry Osipenko Signed-off-by: Rafael J. Wysocki

soc/tegra: pmc: Document core domain fields

2022-05-06T08:53:19Z

These fields are used to track the state of the core domain. Add basic descriptions so that kerneldoc can be properly generated for them. Signed-off-by: Thierry Reding

soc/tegra: pmc: Update Tegra234 reset sources

2022-04-06T13:03:23Z

Update the tegra234_reset_sources array to contain all reset sources for Tegra234 and NULL out the entries that do not actually exist. Signed-off-by: Sandipan Patra Reviewed-by: Andy Shevchenko Signed-off-by: Thierry Reding

soc/tegra: pmc: Add Tegra234 wake events

2022-02-25T13:08:46Z

Enable the Tegra RTC alarm and power key wake-ups for Tegra234 Signed-off-by: kartik Signed-off-by: Thierry Reding

soc/tegra: pmc: Enable core domain support for Tegra20 and Tegra30

2022-02-24T16:09:10Z

All device drivers got runtime PM and OPP support. Flip the core domain support status for Tegra20 and Tegra30 SoCs. Reviewed-by: Ulf Hansson Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding

soc/tegra: pmc: Rename core power domain

2021-12-16T13:03:38Z

CORE power domain uses name of device-tree node, which is inconsistent with the names of PMC domains. Set the name to "core" to make it consistent. Reviewed-by: Ulf Hansson Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding

soc/tegra: pmc: Rename 3d power domains

2021-12-16T13:03:38Z

Device-tree schema doesn't allow domain name to start with a number. We don't use 3d domain yet in device-trees, so rename it to the name used by Tegra TRMs: TD, TD2. Reported-by: David Heidelberg Reviewed-by: Ulf Hansson Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding

soc/tegra: pmc: Add reboot notifier

2021-12-16T13:03:38Z

The Tegra PMC driver implements a restart handler that supports Tegra specific reboot commands such as placing the device into 'recovery' mode in order to reprogram the platform. This is accomplished by setting the appropriate bit in the PMC scratch0 register prior to rebooting the platform. For Tegra platforms that support PSCI or EFI, the default Tegra restart handler is not called and the PSCI or EFI restart handler is called instead. Hence, for Tegra platforms that support PSCI or EFI, the Tegra specific reboot commands do not currently work. Fix this by moving the code that programs the PMC scratch0 register into a separate reboot notifier that will always be called on reboot. Signed-off-by: Jon Hunter Reviewed-by: Dmitry Osipenko Tested-by: Dmitry Osipenko Signed-off-by: Thierry Reding

soc/tegra: pmc: Use devm_platform_ioremap_resource()

2021-10-08T19:42:41Z

Use the devm_platform_ioremap_resource() helper instead of calling platform_get_resource() and devm_ioremap_resource() separately. Signed-off-by: Cai Huoqing Signed-off-by: Thierry Reding