kernel/linux.git/drivers/rtc/rtc-optee.c, branch v7.1-rc5

Merge tag 'rtc-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

2026-02-22T17:43:11+00:00

Pull RTC updates from Alexandre Belloni: - loongson: Loongson-2K0300 support - s35390a: nvmem support - zynqmp: rework calibration * tag 'rtc-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: rtc: ds1390: fix number of bytes read from RTC rtc: class: Remove duplicate check for alarm rtc: optee: simplify OP-TEE context match rtc: interface: Alarm race handling should not discard preceding error rtc: s35390a: implement nvmem support rtc: loongson: Add Loongson-2K0300 support dt-bindings: rtc: loongson: Document Loongson-2K0300 compatible dt-bindings: rtc: loongson: Correct Loongson-1C interrupts property dt-bindings: rtc: renesas,rz-rtca3: Add RZ/V2N support dt-bindings: rtc: cpcap: convert to schema rtc: zynqmp: use dynamic max and min offset ranges rtc: zynqmp: rework set_offset rtc: zynqmp: rework read_offset rtc: zynqmp: check calibration max value rtc: zynqmp: correct frequency value rtc: amlogic-a4: Remove IRQF_ONESHOT rtc: pcf8563: use correct of_node for output clock rtc: max31335: use correct CONFIG symbol in IS_REACHABLE() rtc: nvvrs: Add ARCH_TEGRA to the NV VRS RTC driver

rtc: optee: simplify OP-TEE context match

2026-02-20T22:12:10+00:00

Simplify the TEE implementor ID match by returning the boolean expression directly instead of going through an if/else. Signed-off-by: Rouven Czerwinski Link: https://patch.msgid.link/20260126-optee-simplify-context-match-v1-3-d4104e526cb6@linaro.org Signed-off-by: Alexandre Belloni

rtc: optee: Make use of tee bus methods

2025-12-18T14:00:45+00:00

The tee bus got dedicated callbacks for probe and remove. Make use of these. This fixes a runtime warning about the driver needing to be converted to the bus methods. Reviewed-by: Sumit Garg Acked-by: Alexandre Belloni Signed-off-by: Uwe Kleine-König Signed-off-by: Jens Wiklander

rtc: optee: Migrate to use tee specific driver registration function

2025-12-18T14:00:36+00:00

The tee subsystem recently got a set of dedicated functions to register (and unregister) a tee driver. Make use of them. These care for setting the driver's bus (so the explicit assignment can be dropped) and the driver owner (which is an improvement this driver benefits from). Reviewed-by: Sumit Garg Acked-by: Alexandre Belloni Signed-off-by: Uwe Kleine-König Signed-off-by: Jens Wiklander

rtc: optee: make optee_rtc_pm_ops static

2025-10-05T20:44:16+00:00

Fix sparse warningg: drivers/rtc/rtc-optee.c:714:1: sparse: sparse: symbol 'optee_rtc_pm_ops' was not declared. Should it be static? Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202509230549.L26lw7UZ-lkp@intel.com/ Link: https://lore.kernel.org/r/20251005201925.3757345-1-alexandre.belloni@bootlin.com Signed-off-by: Alexandre Belloni

rtc: optee: Fix error code in optee_rtc_read_alarm()

2025-10-05T18:52:40+00:00

Return "optee_alarm" instead of "alarm". The "alarm" pointer is a valid pointer and not an error pointer. Fixes: 6266aea864fa ("rtc: optee: add alarm related rtc ops to optee rtc driver") Signed-off-by: Dan Carpenter Link: https://lore.kernel.org/r/9e3718fe1128964907619ad325c0c5f5c1354ace.1758182509.git.dan.carpenter@linaro.org Signed-off-by: Alexandre Belloni

rtc: optee: fix error code in probe()

2025-10-05T18:52:40+00:00

Return an error code if kthread_create() fails. Currently the code returns success. Fixes: 6266aea864fa ("rtc: optee: add alarm related rtc ops to optee rtc driver") Signed-off-by: Dan Carpenter Link: https://lore.kernel.org/r/21f1a18008f1bbc8f70d0bd5c05b72fbf5fc9c7d.1758182509.git.dan.carpenter@linaro.org Signed-off-by: Alexandre Belloni

rtc: optee: add alarm related rtc ops to optee rtc driver

2025-09-16T15:38:21+00:00

Add read_alarm and set_alarm ops from the rtc framework. The support of an alarm is handled by a kernel thread waiting in OP-TEE for an asynchronous notification that comes in the interrupt handler of the alarm interruption on OP-TEE secure world. Once the notification arrives, the kernel thread previously suspended is rescheduled (this is handled by the OP-TEE kernel driver) and comes back with the alarm information to the kernel. A second session is therefore needed to enable/disable/cancel a waiting alarm event as the kernel thread stopped in OP-TEE takes a form of mutex on the session and so no one can use this session in parallel. Signed-off-by: Clément Le Goffic Link: https://lore.kernel.org/r/20250715-upstream-optee-rtc-v1-3-e0fdf8aae545@foss.st.com Signed-off-by: Alexandre Belloni

rtc: optee: remove unnecessary memory operations

2025-09-16T15:38:21+00:00

Remove memcpy by using directly the shared memory. Remove memset be initialize variable to 0 on stack. Signed-off-by: Clément Le Goffic Link: https://lore.kernel.org/r/20250715-upstream-optee-rtc-v1-2-e0fdf8aae545@foss.st.com Signed-off-by: Alexandre Belloni

rtc: optee: fix memory leak on driver removal

2025-09-16T15:38:21+00:00

Fix a memory leak in case of driver removal. Free the shared memory used for arguments exchanges between kernel and OP-TEE RTC PTA. Fixes: 81c2f059ab90 ("rtc: optee: add RTC driver for OP-TEE RTC PTA") Signed-off-by: Clément Le Goffic Link: https://lore.kernel.org/r/20250715-upstream-optee-rtc-v1-1-e0fdf8aae545@foss.st.com Signed-off-by: Alexandre Belloni