kernel/linux.git/drivers/clk/imx, branch v6.19.12

driver core: platform: use generic driver_override infrastructure

2026-04-02T11:25:14+00:00

[ Upstream commit 2b38efc05bf7a8568ec74bfffea0f5cfa62bc01d ] When a driver is probed through __driver_attach(), the bus' match() callback is called without the device lock held, thus accessing the driver_override field without a lock, which can cause a UAF. Fix this by using the driver-core driver_override infrastructure taking care of proper locking internally. Note that calling match() from __driver_attach() without the device lock held is intentional. [1] Link: https://lore.kernel.org/driver-core/DGRGTIRHA62X.3RY09D9SOK77P@kernel.org/ [1] Reported-by: Gui-Dong Han Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220789 Fixes: 3d713e0e382e ("driver core: platform: add device binding path 'driver_override'") Reviewed-by: Greg Kroah-Hartman Link: https://patch.msgid.link/20260303115720.48783-5-dakr@kernel.org Signed-off-by: Danilo Krummrich Signed-off-by: Sasha Levin

clk: scu/imx8qxp: do not register driver in probe()

2026-03-12T11:09:16+00:00

[ Upstream commit 78437ab3b769f80526416570f60173c89858dd84 ] imx_clk_scu_init() registers the imx_clk_scu_driver while commonly being called from IMX driver's probe() callbacks. However, it neither makes sense to register drivers from probe() callbacks of other drivers, nor does the driver core allow registering drivers with a device lock already being held. The latter was revealed by commit dc23806a7c47 ("driver core: enforce device_lock for driver_match_device()") leading to a deadlock condition described in [1]. Besides that, nothing seems to unregister the imx_clk_scu_driver once the corresponding driver module is unloaded, which leaves the driver-core with a dangling pointer. Also, if there are multiple matching devices for the imx8qxp_clk_driver, imx8qxp_clk_probe() calls imx_clk_scu_init() multiple times. However, any subsequent call after the first one will fail, since the driver-core does not allow to register the same struct platform_driver multiple times. Hence, register the imx_clk_scu_driver from module_init() and unregister it in module_exit(). Note that we first register the imx8qxp_clk_driver and then call imx_clk_scu_module_init() to avoid having to call imx_clk_scu_module_exit() in the unwind path of imx8qxp_clk_init(). Fixes: dc23806a7c47 ("driver core: enforce device_lock for driver_match_device()") Fixes: 220175cd3979 ("clk: imx: scu: fix build break when compiled as modules") Reported-by: Alexander Stein Closes: https://lore.kernel.org/lkml/13955113.uLZWGnKmhe@steina-w/ Tested-by: Alexander Stein # TQMa8x/MBa8x Link: https://lore.kernel.org/lkml/DFU7CEPUSG9A.1KKGVW4HIPMSH@kernel.org/ [1] Acked-by: Abel Vesa Reviewed-by: Daniel Baluta Link: https://patch.msgid.link/20260212235842.85934-1-dakr@kernel.org Signed-off-by: Danilo Krummrich Signed-off-by: Sasha Levin

Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

2025-12-08T00:38:52+00:00

Pull clk updates from Stephen Boyd: "This is entirely SoC clk drivers. The majority diff wise is for the new Rockchip and Qualcomm clk drivers which is mostly lines and lines of data structures to describe the clk hardware in these SoCs. Beyond those two, Renesas continues to incrementally add clks to their SoC drivers, causing them to show up higher in the diffstat this time because they added quite a few clks all over the place. Overall it is a semi-quiet release that has some new clk drivers and the usual fixes for clock data that was wrong or missing and non-critical cleanups that plug error paths or fix typos. New Drivers: - Qualcomm IPQ5424 Network Subsystem Clock Controller - Qualcomm SM8750 Video Clock Controller - Rockchip RV1126B and RK3506 clock drivers - i.MX8ULP SIM LPAV clock driver - Samsung ACPM (firmware interface) clock driver - Altera Agilex5 clock driver" * tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (117 commits) clk: keystone: fix compile testing clk: keystone: syscon-clk: fix regmap leak on probe failure clk: qcom: Mark camcc_sm7150_hws static clk: samsung: exynos-clkout: Assign .num before accessing .hws clk: rockchip: Add clock and reset driver for RK3506 dt-bindings: clock: rockchip: Add RK3506 clock and reset unit clk: actions: Fix discarding const qualifier by 'container_of' macro clk: spacemit: Set clk_hw_onecell_data::num before using flex array clk: visconti: Add VIIF clocks dt-bindings: clock: tmpv770x: Add VIIF clocks dt-bindings: clock: tmpv770x: Remove definition of number of clocks clk: visconti: Do not define number of clocks in bindings clk: rockchip: Add clock controller for the RV1126B dt-bindings: clock, reset: Add support for rv1126b clk: rockchip: Implement rockchip_clk_register_armclk_multi_pll() clk: qcom: x1e80100-dispcc: Add USB4 router link resets dt-bindings: clock: qcom: x1e80100-dispcc: Add USB4 router link resets clk: qcom: videocc-sm8750: Add video clock controller driver for SM8750 dt-bindings: clock: qcom: Add SM8750 video clock controller clk: qcom: branch: Extend invert logic for branch2 mem clocks ...

syscore: Pass context data to callbacks

2025-11-14T09:01:52+00:00

Several drivers can benefit from registering per-instance data along with the syscore operations. To achieve this, move the modifiable fields out of the syscore_ops structure and into a separate struct syscore that can be registered with the framework. Add a void * driver data field for drivers to store contextual data that will be passed to the syscore ops. Acked-by: Rafael J. Wysocki (Intel) Signed-off-by: Thierry Reding

clk: imx: add driver for imx8ulp's sim lpav

2025-11-11T16:01:25+00:00

The i.MX8ULP System Integration Module (SIM) LPAV module is a block control module found inside the LPAV subsystem, which offers some clock gating options and reset line assertion/de-assertion capabilities. Therefore, the clock gate management is supported by registering the module's driver as a clock provider, while the reset capabilities are managed via the auxiliary device API to allow the DT node to act as a reset and clock provider. Signed-off-by: Laurentiu Mihalcea Reviewed-by: Daniel Baluta Reviewed-by: Peng Fan Link: https://lore.kernel.org/r/20251104120301.913-4-laurentiumihalcea111@gmail.com Signed-off-by: Abel Vesa

clk: imx: imx8mp-audiomix: use devm_auxiliary_device_create() to simple code

2025-11-11T15:04:00+00:00

Use helper function devm_auxiliary_device_create() to remove some boilerplate code. Reviewed-by: Abel Vesa Reviewed-by: Frank Li Signed-off-by: Peng Fan Reviewed-by: Shengjiu Wang Link: https://lore.kernel.org/r/20251024-auxiliary-v2-1-a353dc9e6b1a@nxp.com Signed-off-by: Abel Vesa

clk: imx: Add some delay before deassert the reset

2025-11-11T15:02:01+00:00

Some of the PCCs on i.MX8ULP have a sw_rst bit to control the peripheral reset through SW method. For peripherals like GPU that need sync reset, some delay is necessary befere & after release the reset to make sure the HW is reset into a known status. So add some delay before & after release reset. Signed-off-by: Jacky Bai Reviewed-by: Peng Fan Link: https://lore.kernel.org/r/20250801072153.1974428-1-ping.bai@nxp.com Signed-off-by: Abel Vesa

clk: imx95-blk-ctl: Save/restore registers when RPM routines are called

2025-09-12T14:28:29+00:00

When runtime PM is used for clock providers that are part of a power domain, the power domain supply is cut off during runtime suspend. This causes all BLK CTL registers belonging to that power domain to reset. To prevent this, save the state of the registers before entering suspend and restore them on resume. Additionally, disable the APB clock during suspend to minimize power consumption. Signed-off-by: Laurentiu Palcu Reviewed-by: Frank Li Link: https://lore.kernel.org/r/20250804131450.3918846-3-laurentiu.palcu@oss.nxp.com Signed-off-by: Abel Vesa

clk: imx95-blk-ctl: Save platform data in imx95_blk_ctl structure

2025-09-12T14:28:28+00:00

Add a platform data (pdata) member to struct imx95_blk_ctl to store the result of of_device_get_match_data() during probe to avoid redundant calls in suspend and resume functions. Signed-off-by: Laurentiu Palcu Reviewed-by: Frank Li Reviewed-by: Daniel Baluta Reviewed-by: Abel Vesa Link: https://lore.kernel.org/r/20250804131450.3918846-2-laurentiu.palcu@oss.nxp.com Signed-off-by: Abel Vesa

Merge branch 'clk-pm' into clk-next

2025-07-29T22:19:32+00:00

* clk-pm: clk: qcom: Remove redundant pm_runtime_mark_last_busy() calls clk: imx: Remove redundant pm_runtime_mark_last_busy() calls Documentation: PM: *_autosuspend() functions update last busy time PM: runtime: Mark last busy stamp in pm_request_autosuspend() PM: runtime: Mark last busy stamp in pm_runtime_autosuspend() PM: runtime: Mark last busy stamp in pm_runtime_put_sync_autosuspend() PM: runtime: Mark last busy stamp in pm_runtime_put_autosuspend() PM: runtime: Document return values of suspend-related API functions