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ExynosAutov920 SoC wake-up pin controller has different register layout
than Exynos7, thus it should not be marked as compatible. Neither DTS
nor Linux driver was merged yet, so the change does not impact ABI.
Cc: Jaewon Kim <jaewon02.kim@samsung.com>
Fixes: 904140fa4553 ("dt-bindings: pinctrl: samsung: use Exynos7 fallbacks for newer wake-up controllers")
Link: https://lore.kernel.org/r/20231210133915.42112-1-krzysztof.kozlowski@linaro.org
Reviewed-by: Jaewon Kim <jaewon02.kim@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
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gs101 is similar to newer Exynos SoCs like Exynos850 and ExynosAutov9
where more than one pin controller can do external wake-up interrupt.
So add a dedicated compatible for it.
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Link: https://lore.kernel.org/r/20231209233106.147416-8-peter.griffin@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
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controllers
Older ARM8 SoCs like Exynos5433, Exynos7 and Exynos7885 have the pin
controller with wake-up interrupts muxed, thus the wake-up interrupt
controller device node has interrupts property, while its pin banks
might not (because they are muxed by the wake-up controller).
Newer SoCs like Exynos850 and ExynosAutov9 do not used muxed wake-up
interrupts:
1. Wake-up interrupt controller device node has no interrupts,
2. Its pin banks have interrupts (since there is no muxing).
Their programming interface is however still compatible with Exynos7,
thus change the bindings to express this: retain compatibility with
Exynos7 and add new compatibility fallback of Exynos850 in newer
designs.
No driver changes are needed. This is necessary only to properly
describe DTS.
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Jaewon Kim <jaewon02.kim@samsung.com>
Link: https://lore.kernel.org/r/20231122200407.423264-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
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Add compatible string for exynosautov920 pin controller.
Signed-off-by: Jaewon Kim <jaewon02.kim@samsung.com>
Link: https://lore.kernel.org/r/20231115095609.39883-7-jaewon02.kim@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
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Samsung Exynos SoC reuses several devices from older designs, thus
historically we kept the old (block's) compatible only. This works fine
and there is no bug here, however guidelines expressed in
Documentation/devicetree/bindings/writing-bindings.rst state that:
1. Compatibles should be specific.
2. We should add new compatibles in case of bugs or features.
Add compatibles specific to each SoC in front of all old-SoC-like
compatibles.
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20231108104343.24192-6-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
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Krzysztof Kozlowski's @canonical.com email stopped working, so switch to
generic @kernel.org account for all Devicetree bindings.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20220330074016.12896-2-krzysztof.kozlowski@linaro.org
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Older Samsung Exynos SoCs (Exynos3250, Exynos4, Exynos5, Exynos5433)
expected pin controller node with external wake-up interrupts to have
one interrupt for multiplexing these wake-up interrupts. Also they
expected to have exactly one such pin controller (capable of external
wake-up interrupts).
It seems however that newer ARMv8 Exynos SoCs like Exynos850 and
ExynosAutov9 have differences of their pin controllers capable of
external wake-up interrupts:
1. No multiplexed external wake-up interrupt, only direct,
2. More than one pin controller capable of external wake-up interrupts.
Add dedicated Exynos850 and ExynosAutov9 compatibles.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220111201722.327219-19-krzysztof.kozlowski@canonical.com
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Convert the Samsung SoC (S3C24xx, S3C64xx, S5Pv210, Exynos) pin
controller bindings to DT schema format. Parts of description and DTS
example was copied from existing sources, so keep the license as
GPL-2.0-only.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20220111201722.327219-18-krzysztof.kozlowski@canonical.com
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