kernel/linux.git/drivers/soc/samsung, branch v6.19.12

Merge tag 'soc-drivers-6.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2025-12-06T01:47:59+00:00

Pull more SoC driver updates from Arnd Bergmann: "These updates came a little late, or were based on a later 6.18-rc tag than the others: - A new driver for cache management on cxl devices with memory shared in a coherent cluster. This is part of the drivers/cache/ tree, but unlike the other drivers that back the dma-mapping interfaces, this one is needed only during CPU hotplug. - A shared branch for reset controllers using swnode infrastructure - Added support for new SoC variants in the Amlogic soc_device identification - Minor updates in Freescale, Microchip, Samsung, and Apple SoC drivers" * tag 'soc-drivers-6.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (24 commits) soc: samsung: exynos-pmu: fix device leak on regmap lookup soc: samsung: exynos-pmu: Fix structure initialization soc: fsl: qbman: use kmalloc_array() instead of kmalloc() soc: fsl: qbman: add WQ_PERCPU to alloc_workqueue users MAINTAINERS: Update email address for Christophe Leroy MAINTAINERS: refer to intended file in STANDALONE CACHE CONTROLLER DRIVERS cache: Support cache maintenance for HiSilicon SoC Hydra Home Agent cache: Make top level Kconfig menu a boolean dependent on RISCV MAINTAINERS: Add Jonathan Cameron to drivers/cache and add lib/cache_maint.c + header arm64: Select GENERIC_CPU_CACHE_MAINTENANCE lib: Support ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION soc: amlogic: meson-gx-socinfo: add new SoCs id dt-bindings: arm: amlogic: meson-gx-ao-secure: support more SoCs memregion: Support fine grained invalidate by cpu_cache_invalidate_memregion() memregion: Drop unused IORES_DESC_* parameter from cpu_cache_invalidate_memregion() dt-bindings: cache: sifive,ccache0: add a pic64gx compatible MAINTAINERS: rename Microchip RISC-V entry MAINTAINERS: add new soc drivers to Microchip RISC-V entry soc: microchip: add mfd drivers for two syscon regions on PolarFire SoC dt-bindings: soc: microchip: document the simple-mfd syscon on PolarFire SoC ...

soc: samsung: exynos-pmu: fix device leak on regmap lookup

2025-11-27T15:55:38+00:00

Make sure to drop the reference taken when looking up the PMU device and its regmap. Note that holding a reference to a device does not prevent its regmap from going away so there is no point in keeping the reference. Fixes: 0b7c6075022c ("soc: samsung: exynos-pmu: Add regmap support for SoCs that protect PMU regs") Cc: stable@vger.kernel.org # 6.9 Cc: Peter Griffin Signed-off-by: Johan Hovold Link: https://patch.msgid.link/20251121121852.16825-1-johan@kernel.org Signed-off-by: Krzysztof Kozlowski

soc: samsung: exynos-pmu: Fix structure initialization

2025-11-27T15:02:59+00:00

Commit 78b72897a5c8 ("soc: samsung: exynos-pmu: Enable CPU Idle for gs101") added system wide suspend/resume callbacks to Exynos PMU driver, but some items used by these callbacks are initialized only on GS101-compatible boards. Move that initialization to exynos_pmu_probe() to avoid potential lockdep warnings like below observed during system suspend/resume cycle: INFO: trying to register non-static key. The code is fine but needs lockdep annotation, or maybe you didn't initialize this object before use? turning off the locking correctness validator. CPU: 0 UID: 0 PID: 2134 Comm: rtcwake Not tainted 6.18.0-rc7-next-20251126-00039-g1d656a1af243 #11794 PREEMPT Hardware name: Samsung Exynos (Flattened Device Tree) Call trace: unwind_backtrace from show_stack+0x10/0x14 show_stack from dump_stack_lvl+0x68/0x88 dump_stack_lvl from register_lock_class+0x970/0x988 register_lock_class from __lock_acquire+0xc8/0x29ec __lock_acquire from lock_acquire+0x134/0x39c lock_acquire from _raw_spin_lock+0x38/0x48 _raw_spin_lock from exynos_cpupm_suspend_noirq+0x18/0x34 exynos_cpupm_suspend_noirq from dpm_run_callback+0x98/0x2b8 dpm_run_callback from device_suspend_noirq+0x8c/0x310 Fixes: 78b72897a5c8 ("soc: samsung: exynos-pmu: Enable CPU Idle for gs101") Signed-off-by: Marek Szyprowski Link: https://patch.msgid.link/20251126110038.3326768-1-m.szyprowski@samsung.com [krzk: include calltrace into commit msg] Signed-off-by: Krzysztof Kozlowski

soc: samsung: exynos-chipid: use a local dev variable

2025-11-03T10:02:01+00:00

Use a local variable for struct device to avoid dereferencing. Signed-off-by: Tudor Ambarus Link: https://patch.msgid.link/20251031-gs101-chipid-v1-2-d78d1076b210@linaro.org Signed-off-by: Krzysztof Kozlowski

soc: samsung: gs101-pmu: implement access tables for read and write

2025-10-18T17:16:45+00:00

Accessing non-existent PMU registers causes an SError, halting the system. Implement read and write access tables for the gs101-PMU to specify which registers are read- and/or writable to avoid that SError. Reviewed-by: Sam Protsenko Signed-off-by: André Draszik Link: https://patch.msgid.link/20251009-gs101-pmu-regmap-tables-v2-3-2d64f5261952@linaro.org Signed-off-by: Krzysztof Kozlowski

soc: samsung: exynos-pmu: move some gs101 related code into new file

2025-10-18T17:16:44+00:00

To avoid cluttering common code, move most of the gs101 code into a new file, gs101-pmu.c More code is going to be added for gs101 - having it all in one file helps keeping the common code (file) more readable. While at it, rename variables 'ctx' to 'context' for consistency. No functional change. Reviewed-by: Sam Protsenko Signed-off-by: André Draszik Link: https://patch.msgid.link/20251009-gs101-pmu-regmap-tables-v2-2-2d64f5261952@linaro.org Signed-off-by: Krzysztof Kozlowski

soc: samsung: exynos-pmu: allow specifying read & write access tables for secure regmap

2025-10-18T17:16:44+00:00

Accessing non-existent PMU registers causes an SError, halting the system. regmap can help us with that by allowing to pass the list of valid registers as part of the config during creation. When this driver creates a new regmap itself rather than relying on syscon_node_to_regmap(), it's therefore easily possible to hook in custom access tables for valid read and write registers. Specifying access tables avoids SErrors for invalid registers and instead the regmap core can just return an error. Outside drivers, this is also helpful when using debugfs to access the regmap. Make it possible for drivers to specify read and write tables to be used on creation of the secure regmap by adding respective fields to struct exynos_pmu_data. Also add kerneldoc to same struct while updating it. Reviewed-by: Sam Protsenko Signed-off-by: André Draszik Link: https://patch.msgid.link/20251009-gs101-pmu-regmap-tables-v2-1-2d64f5261952@linaro.org Signed-off-by: Krzysztof Kozlowski

soc: samsung: exynos-chipid: add exynos8890 SoC support

2025-10-18T16:14:35+00:00

Add exynos8890 information to soc_ids tables. This SoC product id is "0xE8890000". Signed-off-by: Ivaylo Ivanov Signed-off-by: Krzysztof Kozlowski

soc: samsung: exynos-pmu: Annotate online/offline functions with __must_hold

2025-10-13T00:58:51+00:00

Annotate functions writing to PMU registers to online and offline CPUs as __must_hold() the necessary spinlock for code correctness. These are static functions so possibility of mistakes is low here, but __must_hold() serves as self-documenting code. Signed-off-by: Krzysztof Kozlowski

soc: samsung: exynos-chipid: Add exynos9610 SoC support

2025-10-13T00:58:07+00:00

Exynos9610's product ID is "0xE9610000". Add this ID to the IDs table along with the name of the SoC. Signed-off-by: Alexandru Chimac Signed-off-by: Krzysztof Kozlowski