kernel/linux.git/drivers/clocksource/exynos_mct.c, branch v6.19.11

clocksource/drivers/exynos_mct: Fixed a spelling error

2025-03-07T16:55:59+00:00

Fixed a spelling issue in driver /s/processer/processor/ Signed-off-by: Anindya Sundar Gayen Link: https://lore.kernel.org/r/20250228131138.9208-1-anindya.sg@samsung.com Signed-off-by: Daniel Lezcano

clocksource/drivers/exynos_mct: Remove clockevents shutdown call on offlining

2024-10-31T09:41:43+00:00

The clockevents core already detached and unregistered it at this stage. Signed-off-by: Frederic Weisbecker Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/all/20241029125451.54574-8-frederic@kernel.org

clocksource/drivers/exynos_mct: Explicitly return 0 for shared timer

2023-04-24T14:56:13+00:00

For a shared timers, the mct_init_dt() should not initialize the clock even with global comparator. This is not an error, thus the function should simply return 0, not 'ret'. This also fixes smatch warning: drivers/clocksource/exynos_mct.c:635 mct_init_dt() warn: missing error code? 'ret' Reported-by: kernel test robot Reported-by: Dan Carpenter Link: https://lore.kernel.org/r/202304021446.46XVKag0-lkp@intel.com/ Signed-off-by: Krzysztof Kozlowski Reviewed-by: Vincent Whitchurch Reviewed-by: Alim Akhtar Signed-off-by: Daniel Lezcano Link: https://lore.kernel.org/r/20230403094017.9556-1-krzysztof.kozlowski@linaro.org

clocksource/drivers/exynos_mct: Support local-timers property

2022-09-20T08:49:45+00:00

If the device tree indicates that the hardware requires that the processor only use certain local timers, respect that. Signed-off-by: Vincent Whitchurch Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20220609112738.359385-4-vincent.whitchurch@axis.com Signed-off-by: Daniel Lezcano

clocksource/drivers/exynos_mct: Support frc-shared property

2022-09-20T08:49:45+00:00

When the FRC is shared with another main processor, the other processor is assumed to have started it and this processor should not write to the global registers. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Vincent Whitchurch Link: https://lore.kernel.org/r/20220609112738.359385-3-vincent.whitchurch@axis.com Signed-off-by: Daniel Lezcano

clocksource/drivers/exynos_mct: Increase the size of name array

2022-03-07T17:27:22+00:00

Variable _name_ hold mct_tick number per cpu and it is currently limited to 10. Which restrict the scalability of the MCT driver for the SoC which has more local timers interrupts (>= 12). Increase the length of it to make mct_tick printed correctly for each local timer interrupts per CPU. Signed-off-by: Alim Akhtar Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20220221174547.26176-3-alim.akhtar@samsung.com Signed-off-by: Daniel Lezcano

clocksource/drivers/exynos_mct: Bump up mct max irq number

2022-03-07T17:27:22+00:00

Bump-up maximum number of MCT IRQ to match the binding documentation. This make driver scalable for SoC which has more than 12 timer irqs, like recently added FSD SoC. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Alim Akhtar Link: https://lore.kernel.org/r/20220221174547.26176-2-alim.akhtar@samsung.com Signed-off-by: Daniel Lezcano

clocksource/drivers/exynos_mct: Remove mct interrupt index enum

2022-03-07T17:27:22+00:00

MCT driver define an enum which list global and local timer's irq index. Most of them are not used but MCT_G0_IRQ and MCT_L0_IRQ and these two are at a fixed offset/index. Get rid of this enum and use a #define for the used irq index. No functional changes expected. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Alim Akhtar Link: https://lore.kernel.org/r/20220221174547.26176-1-alim.akhtar@samsung.com Signed-off-by: Daniel Lezcano

clocksource/drivers/exynos_mct: Handle DTS with higher number of interrupts

2022-03-07T17:27:22+00:00

The driver statically defines maximum number of interrupts it can handle, however it does not respect that limit when configuring them. When provided with a DTS with more interrupts than assumed, the driver will overwrite static array mct_irqs leading to silent memory corruption. Validate the interrupts coming from DTS to avoid this. This does not change the fact that such DTS might not boot at all, because it is simply incompatible, however at least some warning will be printed. Fixes: 36ba5d527e95 ("ARM: EXYNOS: add device tree support for MCT controller driver") Signed-off-by: Krzysztof Kozlowski Reviewed-by: Alim Akhtar Link: https://lore.kernel.org/r/20220220103815.135380-1-krzysztof.kozlowski@canonical.com Signed-off-by: Daniel Lezcano

clocksource/drivers/exynos_mct: Fix silly typo resulting in checkpatch warning

2021-12-09T11:29:52+00:00

Commit ae460fd9164b ("clocksource/drivers/exynos_mct: Prioritise Arm arch timer on arm64") changed the rating of the MCT clockevents device to be lower than the Arm architected timer and, in the process, replaced a semicolon with a comma thanks to a silly copy-paste error. Put the semicolon back so that the code looks more idiomatic and resolve the SUSPECT_COMMA_SEMICOLON warning from checkpatch at the same time. Cc: Krzysztof Kozlowski Cc: Daniel Lezcano Signed-off-by: Will Deacon Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20211103164804.30182-1-will@kernel.org Signed-off-by: Daniel Lezcano