kernel/git/stable/linux.git/drivers/firmware/imx/imx-scu.c, branch master

firmware: imx: scu: Use devm_mutex_init

2025-10-27T06:43:48+00:00

In normal case, there is no need to invoke mutex_destroy in error path, but it is useful when CONFIG_DEBUG_MUTEXES, so use devm_mutex_init(). Reviewed-by: Frank Li Signed-off-by: Peng Fan Signed-off-by: Shawn Guo

firmware: imx: scu: Suppress bind attrs

2025-10-27T06:43:47+00:00

The SCU driver is critical for system working properly, it should never be removed and binded again. So suppress the bind attrs Reviewed-by: Frank Li Signed-off-by: Peng Fan Signed-off-by: Shawn Guo

firmware: imx: scu: Update error code

2025-10-27T06:43:47+00:00

IMX_SC_ERR_NOTFOUND should map with -ENOENT, not -EEXIST. -ENODEV makes more sense for IMX_SC_ERR_NOPOWER, and -ECOMM makes more sense for IMX_SC_ERR_IPC. Reviewed-by: Frank Li Signed-off-by: Peng Fan Signed-off-by: Shawn Guo

firmware: imx-scu: fix OF node leak in .probe()

2025-02-18T03:22:50+00:00

imx_scu_probe() calls of_parse_phandle_with_args(), but does not release the OF node reference obtained by it. Add a of_node_put() call after done with the node. Fixes: f25a066d1a07 ("firmware: imx-scu: Support one TX and one RX") Signed-off-by: Joe Hattori Signed-off-by: Shawn Guo

Merge tag 'soc-arm-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2023-08-30T23:49:40+00:00

Pull ARM SoC cleanups from Arnd Bergmann: "These are all minor cleanups for platform specific code in arch/arm/ and some of the associated drivers. The majority of these are work done by Rob Herring to improve the way devicetreee header files are handled" * tag 'soc-arm-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (49 commits) ARM: davinci: Drop unused includes ARM: s5pv210: Explicitly include correct DT includes ARM: dove: Drop unused includes ARM: mvebu: Explicitly include correct DT includes Documentation/process: maintainer-soc: document dtbs_check requirement for Samsung MAINTAINER: samsung: document dtbs_check requirement for Samsung Documentation/process: maintainer-soc: add clean platforms profile MAINTAINERS: soc: reference maintainer profile ARM: nspire: Remove unused header file mmio.h ARM: nspire: Use syscon-reboot to handle restart soc: fsl: Explicitly include correct DT includes soc: xilinx: Explicitly include correct DT includes soc: sunxi: Explicitly include correct DT includes soc: rockchip: Explicitly include correct DT includes soc: mediatek: Explicitly include correct DT includes soc: aspeed: Explicitly include correct DT includes firmware: Explicitly include correct DT includes bus: Explicitly include correct DT includes ARM: spear: Explicitly include correct DT includes ARM: mvebu: Explicitly include correct DT includes ...

firmware: Explicitly include correct DT includes

2023-08-12T08:31:01+00:00

The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Acked-by: Dinh Nguyen Acked-by: Thierry Reding Signed-off-by: Rob Herring Acked-by: Sudeep Holla Link: https://lore.kernel.org/r/20230803-dt-header-cleanups-for-soc-v2-17-d8de2cc88bff@kernel.org Signed-off-by: Arnd Bergmann

firmware: imx: scu: increase RPC timeout

2023-08-11T14:13:55+00:00

When system loading is high, we can meet some command timeout issue occasionally, so increase the timeout to a safe value. Signed-off-by: Dong Aisheng Signed-off-by: Peng Fan Signed-off-by: Shawn Guo

firmware: imx: scu: change init level to subsys_initcall_sync

2023-08-11T14:13:40+00:00

Change firmware init level to subsys_initcall_sync to ensure it's probed before most devices to avoid unnecessary defer probe. Signed-off-by: Dong Aisheng Signed-off-by: Peng Fan Signed-off-by: Shawn Guo

firmware: imx: scu: use dev_err_probe

2023-03-06T02:10:24+00:00

This simplifies the code and silences -517 error messages. Also the reason is listed in /sys/kernel/debug/devices_deferred. Signed-off-by: Alexander Stein Reviewed-by: Mukesh Ojha Signed-off-by: Shawn Guo

firmware: imx: Move i.MX SCU soc driver into imx firmware folder

2020-07-13T02:02:00+00:00

The i.MX SCU soc driver depends on SCU firmware driver, so it has to use platform driver model for proper defer probe operation, since it has no device binding in DT file, a simple platform device is created together inside the platform driver. To make it more clean, we can just move the entire SCU soc driver into imx firmware folder and initialized by i.MX SCU firmware driver. Signed-off-by: Anson Huang Signed-off-by: Shawn Guo