kernel/linux.git/drivers/soc/tegra, branch v6.19.11

soc/tegra: pmc: Fix unsafe generic_handle_irq() call

2026-03-04T12:19:47+00:00

[ Upstream commit e6d96073af681780820c94079b978474a8a44413 ] Currently, when resuming from system suspend on Tegra platforms, the following warning is observed: WARNING: CPU: 0 PID: 14459 at kernel/irq/irqdesc.c:666 Call trace: handle_irq_desc+0x20/0x58 (P) tegra186_pmc_wake_syscore_resume+0xe4/0x15c syscore_resume+0x3c/0xb8 suspend_devices_and_enter+0x510/0x540 pm_suspend+0x16c/0x1d8 The warning occurs because generic_handle_irq() is being called from a non-interrupt context which is considered as unsafe. Fix this warning by deferring generic_handle_irq() call to an IRQ work which gets executed in hard IRQ context where generic_handle_irq() can be called safely. When PREEMPT_RT kernels are used, regular IRQ work (initialized with init_irq_work) is deferred to run in per-CPU kthreads in preemptible context rather than hard IRQ context. Hence, use the IRQ_WORK_INIT_HARD variant so that with PREEMPT_RT kernels, the IRQ work is processed in hardirq context instead of being deferred to a thread which is required for calling generic_handle_irq(). On non-PREEMPT_RT kernels, both init_irq_work() and IRQ_WORK_INIT_HARD() execute in IRQ context, so this change has no functional impact for standard kernel configurations. Signed-off-by: Petlozu Pravareshwar Signed-off-by: Prathamesh Shete Reviewed-by: Jon Hunter Tested-by: Jon Hunter [treding@nvidia.com: miscellaneous cleanups] Signed-off-by: Thierry Reding Signed-off-by: Sasha Levin

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

2025-12-06T01:29:04+00:00

Pull SoC driver updates from Arnd Bergmann: "This is the first half of the driver changes: - A treewide interface change to the "syscore" operations for power management, as a preparation for future Tegra specific changes - Reset controller updates with added drivers for LAN969x, eic770 and RZ/G3S SoCs - Protection of system controller registers on Renesas and Google SoCs, to prevent trivially triggering a system crash from e.g. debugfs access - soc_device identification updates on Nvidia, Exynos and Mediatek - debugfs support in the ST STM32 firewall driver - Minor updates for SoC drivers on AMD/Xilinx, Renesas, Allwinner, TI - Cleanups for memory controller support on Nvidia and Renesas" * tag 'soc-drivers-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (114 commits) memory: tegra186-emc: Fix missing put_bpmp Documentation: reset: Remove reset_controller_add_lookup() reset: fix BIT macro reference reset: rzg2l-usbphy-ctrl: Fix a NULL vs IS_ERR() bug in probe reset: th1520: Support reset controllers in more subsystems reset: th1520: Prepare for supporting multiple controllers dt-bindings: reset: thead,th1520-reset: Add controllers for more subsys dt-bindings: reset: thead,th1520-reset: Remove non-VO-subsystem resets reset: remove legacy reset lookup code clk: davinci: psc: drop unused reset lookup reset: rzg2l-usbphy-ctrl: Add support for RZ/G3S SoC reset: rzg2l-usbphy-ctrl: Add support for USB PWRRDY dt-bindings: reset: renesas,rzg2l-usbphy-ctrl: Document RZ/G3S support reset: eswin: Add eic7700 reset driver dt-bindings: reset: eswin: Documentation for eic7700 SoC reset: sparx5: add LAN969x support dt-bindings: reset: microchip: Add LAN969x support soc: rockchip: grf: Add select correct PWM implementation on RK3368 soc/tegra: pmc: Add USB wake events for Tegra234 amba: tegra-ahb: Fix device leak on SMMU enable ...

soc: tegra: Simplify with of_machine_device_match()

2025-11-27T01:43:12+00:00

Replace open-coded getting root OF node and matching against it with new of_machine_device_match() helper. Reviewed-by: Jon Hunter Signed-off-by: Krzysztof Kozlowski Acked-by: Thierry Reding Reviewed-by: AngeloGioacchino Del Regno Link: https://patch.msgid.link/20251112-b4-of-match-matchine-data-v2-11-d46b72003fd6@linaro.org Signed-off-by: Rob Herring (Arm)

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

2025-11-25T09:49:10+00:00

soc/tegra: Changes for v6.19-rc1 A couple of small fixes across the board: ACPI support on FUSE no longer exposes duplicate SoC information, speedo IDs for Tegra210 are updated, some comments see typo fixes or kerneldoc additions. Finally, support for USB wake events is added on Tegra234, which allow these systems to resume from suspend on USB activity. * tag 'tegra-for-6.19-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux: soc/tegra: pmc: Add USB wake events for Tegra234 soc/tegra: pmc: Document tegra_pmc.syscore field soc/tegra: pmc: Don't fail if "aotag" is not present soc/tegra: fuse: speedo-tegra210: Add SoC speedo 2 soc/tegra: fuse: speedo-tegra210: Update speedo IDs soc/tegra: Resolve a spelling error in the tegra194-cbb.c soc/tegra: fuse: Do not register SoC device on ACPI boot Signed-off-by: Arnd Bergmann

soc/tegra: pmc: Add USB wake events for Tegra234

2025-11-14T18:29:50+00:00

Add USB wake events for Tegra234 so that system can be woken up from suspend when USB devices hot-plug/unplug event is detected. Signed-off-by: Haotien Hsu Signed-off-by: Thierry Reding

soc/tegra: pmc: Document tegra_pmc.syscore field

2025-11-14T16:42:08+00:00

This eliminates a warning from the documentation build targets. Signed-off-by: Thierry Reding

soc/tegra: pmc: Don't fail if "aotag" is not present

2025-11-14T16:35:36+00:00

The "aotog" is an optional aperture, so if that aperture is not defined for a given device, then initialise the 'aotag' pointer to NULL instead of returning an error. Note that the PMC driver will not use 'aotag' pointer if initialised to NULL. Co-developed-by: Shardar Mohammed Signed-off-by: Shardar Mohammed Signed-off-by: Prathamesh Shete Signed-off-by: Jon Hunter Signed-off-by: Thierry Reding

soc/tegra: fuse: speedo-tegra210: Add SoC speedo 2

2025-11-14T16:18:25+00:00

The Jetson Nano series of modules only have 2 EMC table entries, different from other SoC SKUs. As the EMC driver uses the SoC speedo ID to populate the EMC OPP tables, add a new speedo ID to uniquely identify this. Signed-off-by: Aaron Kling Reviewed-by: Mikko Perttunen Signed-off-by: Thierry Reding

soc/tegra: fuse: speedo-tegra210: Update speedo IDs

2025-11-14T16:17:33+00:00

Existing code only sets CPU and GPU speedo IDs 0 and 1. The CPU DVFS code supports 11 IDs and nouveau supports 5. This aligns with what the downstream vendor kernel supports. Align SKUs with the downstream list. The Tegra210 CVB tables were added in the first referenced fixes commit. Since then, all Tegra210 SoCs have tried to scale to 1.9 GHz, when the supported devkits are only supposed to scale to 1.5 or 1.7 GHZ. Overclocking should not be the default state. Fixes: 2b2dbc2f94e5 ("clk: tegra: dfll: add CVB tables for Tegra210") Fixes: 579db6e5d9b8 ("arm64: tegra: Enable DFLL support on Jetson Nano") Signed-off-by: Aaron Kling Signed-off-by: Thierry Reding

soc/tegra: Resolve a spelling error in the tegra194-cbb.c

2025-11-14T15:16:20+00:00

Fix a typo spotted during code reading. Signed-off-by: Bruno Sobreira França Reviewed-by: Jon Hunter Acked-by: Uwe Kleine-König Reviewed-by: Herve Codina Signed-off-by: Thierry Reding