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

firmware: imx: scu: manage mailbox channels and global handle

2026-07-24T20:28:37+00:00

imx_scu_probe() requests mailbox channels with the non-managed mbox_request_channel_byname() helper and then publishes sc_ipc through the global imx_sc_ipc_handle. Later probe failures, including child population failure, can leave the channels and global handle live after the probe has failed. Register devres actions to free each mailbox channel and clear the global handle. Also depopulate partially created child devices when devm_of_platform_populate() reports an error. Signed-off-by: Pengpeng Hou Signed-off-by: Frank Li

firmware: imx: sm-misc: Add NULL check for kmalloc in syslog_show

2026-06-29T20:40:53+00:00

Add a proper NULL check for the kmalloc() return value in syslog_show(). If memory allocation fails, syslog would be NULL and passing it to misc_syslog() could lead to a NULL pointer dereference. Fixes: 80a4062e8821 ("firmware: imx: sm-misc: Dump syslog info") Signed-off-by: Li Jun Signed-off-by: Frank Li

Merge tag 'soc-arm-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2026-06-17T18:28:10+00:00

Pull arm SoC code updates from Arnd Bergmann: "The largest addition here is the revived support for the ZTE ZX SoC platform, though this mostly documentation. The other changes are code cleanups that deal with continued conversion of the GPIO library away from GPIO numbers to descriptors and a few minor bugfixes" * tag 'soc-arm-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: MAINTAINERS: Add Axiado reviewer and Maintainers ARM: remove the last few uses of do_bad_IRQ() ARM: imx31: Fix IIM mapping leak in revision check ARM: imx3: Fix CCM node reference leak ARM: orion5x: update board check in mss2_pci_init() to use the DT arm: mvebu_v5_defconfig: remove stale MACH_LINKSTATION_LSCHL reference ARM: mvebu: simplify of_node_put calls ARM: mvebu: drop unnecessary NULL check arm: boot: ep93xx: don't rely on machine_is_*() for removed board files ARM: zte: clean up zx297520v3 doc. warnings arm64: Kconfig: drop unneeded dependency on OF_GPIO for ARCH_MVEBU firmware: imx: sm-misc: Make scmi_imx_misc_ctrl_nb variable static ARM: zte: Add zx297520v3 platform support ARM: pxa: pxa27x: attach software node to its target GPIO controller ARM: pxa: pxa25x: attach software node to its target GPIO controller ARM: pxa: spitz: attach software nodes to their target GPIO controllers ARM: pxa: statify platform device definitions in spitz board file ARM: omap2: simplify allocation for omap_device ARM: select legacy gpiolib interfaces where used ARM: s3c: use gpio lookup table for LEDs

firmware: imx: sm-misc: Make scmi_imx_misc_ctrl_nb variable static

2026-05-19T15:58:09+00:00

File-scope 'scmi_imx_misc_ctrl_nb' is not used outside of this unit, so make it static to silence sparse warning: sm-misc.c:19:23: warning: symbol 'scmi_imx_misc_ctrl_nb' was not declared. Should it be static? Reviewed-by: Daniel Baluta Signed-off-by: Krzysztof Kozlowski Signed-off-by: Frank Li

firmware: imx: sm-misc: Print boot/shutdown reasons

2026-05-05T14:45:53+00:00

Add reset reason string table for i.MX95 and introduce a helper (scmi_imx_misc_get_reason) to query and print both system and LM (Logical Machine) reset reasons via the SCMI MISC protocol. Signed-off-by: Peng Fan Link: https://patch.msgid.link/20260305-scmi-imx-reset-v1-2-18de78978ba9@nxp.com Acked-by: Frank Li Signed-off-by: Sudeep Holla

firmware: imx: sm-misc: Dump syslog info

2026-01-17T02:32:21+00:00

Add debugfs interface to read System Manager syslog info Signed-off-by: Peng Fan Signed-off-by: Shawn Guo

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-irq: Remove unused export of imx_scu_enable_general_irq_channel

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

Since its introduction, this symbol has not been used by any loadable modules. It remains only referenced within imx-scu.c, which is always built together with imx-scu-irq.c As such, exporting imx_scu_enable_general_irq_channel is unnecessary, so remove the export. Reviewed-by: Frank Li Signed-off-by: Peng Fan Signed-off-by: Shawn Guo