pm24.git/drivers/pmdomain, branch perf-mon

pmdomain: airoha: Fix compilation error with Clang-20 and Thumb2 mode

2025-01-21T09:45:24Z

The use of R7 in the SMCCC conflicts with the compiler's use of R7 as a frame pointer in Thumb2 mode, which is forcibly enabled by Clang when profiling hooks are inserted via the -pg switch. This is a known issue and similar driver workaround this with a Makefile ifdef. Exact workaround are applied in drivers/firmware/arm_scmi/transports/Makefile and other similar driver. Suggested-by: Sudeep Holla Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202501201840.XmpHXpQ4-lkp@intel.com/ Fixes: 82e703dd438b ("pmdomain: airoha: Add Airoha CPU PM Domain support") Signed-off-by: Christian Marangi Link: https://lore.kernel.org/r/20250120153817.11807-1-ansuelsmth@gmail.com Signed-off-by: Ulf Hansson

pmdomain: arm: scmi_pm_domain: Send an explicit request to set the current state

2025-01-17T11:17:16Z

On a system with multiple active SCMI agents, one agent(other than OSPM/ Linux or bootloader) would request to turn on a shared power domain before the Linux boots/initialise the genpds. So when the Linux boots and gets the power state as already ON, it just registers the genpd with a default ON state. However, when the driver that needs this shared power domain is probed genpd sees that the power domain status is ON and never makes any SCMI call to power it up which is correct. But, since Linux didn't make an explicit request to turn on the shared power domain, the SCMI platform firmware will not know if the OSPM agent is actively using it. Suppose the other agent that requested the shared power domain to be powered ON requests to power it OFF as it no longer needs it, the SCMI platform firmware needs to turn it off if there are no active users of it which in the above scenaro is the case. As a result of SCMI platform firmware turning off the resource, OSPM/ Linux will crash the moment as it expects the shared power domain to be powered ON. Send an explicit request to set the current state when setting up the genpd power domains so that OSPM registers its vote in the power domain state with the SCMI platform firmware. The other option is to not read the state and set the genpds as default OFF, but it can't handle the scenario on certain platforms where SCMI platform keeps all the power domains turned ON by default for faster boot (or any other such variations) and expect the OSPM to turn off the unused domains if power saving is required. Link: https://lore.kernel.org/all/Z4aBkezSWOPCXcUh@bogus Reported-by: Ranjani Vaidyanathan Reported-by: Peng Fan Signed-off-by: Sudeep Holla Reviewed-by: Cristian Marussi Link: https://lore.kernel.org/r/20250115113931.1181309-1-sudeep.holla@arm.com Signed-off-by: Ulf Hansson

pmdomain: Merge branch fixes into next

2025-01-16T15:55:54Z

Merge the pmdomain fixes for v6.13-rc[n] into the next branch, to allow them to get tested together with the new changes that are targeted for v6.14. Signed-off-by: Ulf Hansson

pmdomain: imx8mp-blk-ctrl: add missing loop break condition

2025-01-16T15:10:32Z

Currently imx8mp_blk_ctrl_remove() will continue the for loop until an out-of-bounds exception occurs. pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : dev_pm_domain_detach+0x8/0x48 lr : imx8mp_blk_ctrl_shutdown+0x58/0x90 sp : ffffffc084f8bbf0 x29: ffffffc084f8bbf0 x28: ffffff80daf32ac0 x27: 0000000000000000 x26: ffffffc081658d78 x25: 0000000000000001 x24: ffffffc08201b028 x23: ffffff80d0db9490 x22: ffffffc082340a78 x21: 00000000000005b0 x20: ffffff80d19bc180 x19: 000000000000000a x18: ffffffffffffffff x17: ffffffc080a39e08 x16: ffffffc080a39c98 x15: 4f435f464f006c72 x14: 0000000000000004 x13: ffffff80d0172110 x12: 0000000000000000 x11: ffffff80d0537740 x10: ffffff80d05376c0 x9 : ffffffc0808ed2d8 x8 : ffffffc084f8bab0 x7 : 0000000000000000 x6 : 0000000000000000 x5 : ffffff80d19b9420 x4 : fffffffe03466e60 x3 : 0000000080800077 x2 : 0000000000000000 x1 : 0000000000000001 x0 : 0000000000000000 Call trace: dev_pm_domain_detach+0x8/0x48 platform_shutdown+0x2c/0x48 device_shutdown+0x158/0x268 kernel_restart_prepare+0x40/0x58 kernel_kexec+0x58/0xe8 __do_sys_reboot+0x198/0x258 __arm64_sys_reboot+0x2c/0x40 invoke_syscall+0x5c/0x138 el0_svc_common.constprop.0+0x48/0xf0 do_el0_svc+0x24/0x38 el0_svc+0x38/0xc8 el0t_64_sync_handler+0x120/0x130 el0t_64_sync+0x190/0x198 Code: 8128c2d0 ffffffc0 aa1e03e9 d503201f Fixes: 556f5cf9568a ("soc: imx: add i.MX8MP HSIO blk-ctrl") Cc: stable@vger.kernel.org Signed-off-by: Xiaolei Wang Reviewed-by: Lucas Stach Reviewed-by: Fabio Estevam Reviewed-by: Frank Li Link: https://lore.kernel.org/r/20250115014118.4086729-1-xiaolei.wang@windriver.com Signed-off-by: Ulf Hansson

pmdomain: airoha: Add Airoha CPU PM Domain support

2025-01-16T15:01:27Z

Add Airoha CPU PM Domain support to control frequency and power of CPU present on Airoha EN7581 SoC. Frequency and power can be controlled with the use of the SMC command by passing the performance state. The driver also expose a read-only clock that expose the current CPU frequency with SMC command. Signed-off-by: Christian Marangi Link: https://lore.kernel.org/r/20250109131313.32317-1-ansuelsmth@gmail.com Signed-off-by: Ulf Hansson

pmdomain: Merge branch fixes into next

2024-12-19T14:49:44Z

Merge the pmdomain fixes for v6.13-rc[n] into the next branch, to allow them to get tested together with the new changes that are targeted for v6.14. Signed-off-by: Ulf Hansson

pmdomain: core: add dummy release function to genpd device

2024-12-19T14:47:02Z

The genpd device, which is really only used as a handle to lookup OPP, but not even registered to the device core otherwise and thus lifetime linked to the genpd struct it is contained in, is missing a release function. After b8f7bbd1f4ec ("pmdomain: core: Add missing put_device()") the device will be cleaned up going through the driver core device_release() function, which will warn when no release callback is present for the device. Add a dummy release function to shut up the warning. Signed-off-by: Lucas Stach Tested-by: Luca Ceresoli Fixes: b8f7bbd1f4ec ("pmdomain: core: Add missing put_device()") Cc: stable@vger.kernel.org Message-ID: <20241218184433.1930532-1-l.stach@pengutronix.de> Signed-off-by: Ulf Hansson

pmdomain: imx: gpcv2: fix an OF node reference leak in imx_gpcv2_probe()

2024-12-19T14:26:37Z

imx_gpcv2_probe() leaks an OF node reference obtained by of_get_child_by_name(). Fix it by declaring the device node with the __free(device_node) cleanup construct. This bug was found by an experimental static analysis tool that I am developing. Fixes: 03aa12629fc4 ("soc: imx: Add GPCv2 power gating driver") Signed-off-by: Joe Hattori Cc: stable@vger.kernel.org Message-ID: <20241215030159.1526624-1-joe@pf.is.s.u-tokyo.ac.jp> Signed-off-by: Ulf Hansson

pmdomain: ti_sci: handle wake IRQs for IO daisy chain wakeups

2024-12-10T11:37:26Z

When a device supports IO daisy-chain wakeups, it uses a dedicated wake IRQ. Devices with IO daisy-chain wakeups enabled should not set wakeup constraints since these can happen even from deep power states, so should not prevent the DM from picking deep power states. Wake IRQs are set with dev_pm_set_wake_irq() or dev_pm_set_dedicated_wake_irq(). The latter is used by the serial driver used on K3 platforms (drivers/tty/serial/8250/8250_omap.c) when the interrupts-extended property is used to describe the dedicated wakeup interrupt. Detect these wake IRQs in the suspend path, and if set, skip sending constraint. Tested-by: Dhruva Gole Signed-off-by: Kevin Hilman Reviewed-by: Dhruva Gole Message-ID: <20241206-lpm-v6-10-constraints-pmdomain-v6-3-833980158c68@baylibre.com> Signed-off-by: Ulf Hansson

pmdomain: ti_sci: add wakeup constraint management

2024-12-10T11:37:26Z

During system-wide suspend, check all devices connected to PM domain to see if they are wakeup-enabled. If so, set a TI SCI device constraint. Note: DM firmware clears all constraints on resume. Co-developed-by: Vibhore Vardhan Signed-off-by: Vibhore Vardhan Reviewed-by: Ulf Hansson Tested-by: Dhruva Gole Signed-off-by: Kevin Hilman Reviewed-by: Dhruva Gole Message-ID: <20241206-lpm-v6-10-constraints-pmdomain-v6-2-833980158c68@baylibre.com> Signed-off-by: Ulf Hansson