| Message ID | 20230722115441.139628-1-krzysztof.kozlowski@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/3] media: dt-bindings: samsung,exynos4212-fimc-is: replace duplicate pmu node with phandle | expand |
On Sat, 22 Jul 2023 13:54:39 +0200, Krzysztof Kozlowski wrote: > The FIMC IS camera must access the PMU (Power Management Unit) IO memory > to control camera power. This was achieved by duplicating the PMU node > as its child like: > > soc@0 { > system-controller@10020000 { ... }; // Real PMU > > camera@11800000 { > fimc-is@12000000 { > // FIMC IS camera node > pmu@10020000 { > reg = <0x10020000 0x3000>; // Fake PMU node > }; > }; > }; > }; > > This is not a correct representation of the hardware. Mapping the PMU > (Power Management Unit) IO memory should be via syscon-like phandle > (samsung,pmu-syscon, already used for other drivers), not by duplicating > "pmu" Devicetree node inside the FIMC IS. > > Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> > --- > .../media/samsung,exynos4212-fimc-is.yaml | 15 ++++++++++----- > .../devicetree/bindings/media/samsung,fimc.yaml | 5 +---- > 2 files changed, 11 insertions(+), 9 deletions(-) > Reviewed-by: Rob Herring <robh@kernel.org>
diff --git a/Documentation/devicetree/bindings/media/samsung,exynos4212-fimc-is.yaml b/Documentation/devicetree/bindings/media/samsung,exynos4212-fimc-is.yaml index 3691cd4962b2..3a5ff3f47060 100644 --- a/Documentation/devicetree/bindings/media/samsung,exynos4212-fimc-is.yaml +++ b/Documentation/devicetree/bindings/media/samsung,exynos4212-fimc-is.yaml @@ -75,13 +75,20 @@ properties: power-domains: maxItems: 1 + samsung,pmu-syscon: + $ref: /schemas/types.yaml#/definitions/phandle + description: + Power Management Unit (PMU) system controller interface, used to + power/start the ISP. + patternProperties: "^pmu@[0-9a-f]+$": type: object additionalProperties: false + deprecated: true description: Node representing the SoC's Power Management Unit (duplicated with the - correct PMU node in the SoC). + correct PMU node in the SoC). Deprecated, use samsung,pmu-syscon. properties: reg: @@ -131,6 +138,7 @@ required: - clock-names - interrupts - ranges + - samsung,pmu-syscon - '#size-cells' additionalProperties: false @@ -179,15 +187,12 @@ examples: <&sysmmu_fimc_fd>, <&sysmmu_fimc_mcuctl>; iommu-names = "isp", "drc", "fd", "mcuctl"; power-domains = <&pd_isp>; + samsung,pmu-syscon = <&pmu_system_controller>; #address-cells = <1>; #size-cells = <1>; ranges; - pmu@10020000 { - reg = <0x10020000 0x3000>; - }; - i2c-isp@12140000 { compatible = "samsung,exynos4212-i2c-isp"; reg = <0x12140000 0x100>; diff --git a/Documentation/devicetree/bindings/media/samsung,fimc.yaml b/Documentation/devicetree/bindings/media/samsung,fimc.yaml index 79ff6d83a9fd..530a08f5d3fe 100644 --- a/Documentation/devicetree/bindings/media/samsung,fimc.yaml +++ b/Documentation/devicetree/bindings/media/samsung,fimc.yaml @@ -236,15 +236,12 @@ examples: <&sysmmu_fimc_fd>, <&sysmmu_fimc_mcuctl>; iommu-names = "isp", "drc", "fd", "mcuctl"; power-domains = <&pd_isp>; + samsung,pmu-syscon = <&pmu_system_controller>; #address-cells = <1>; #size-cells = <1>; ranges; - pmu@10020000 { - reg = <0x10020000 0x3000>; - }; - i2c-isp@12140000 { compatible = "samsung,exynos4212-i2c-isp"; reg = <0x12140000 0x100>;
The FIMC IS camera must access the PMU (Power Management Unit) IO memory to control camera power. This was achieved by duplicating the PMU node as its child like: soc@0 { system-controller@10020000 { ... }; // Real PMU camera@11800000 { fimc-is@12000000 { // FIMC IS camera node pmu@10020000 { reg = <0x10020000 0x3000>; // Fake PMU node }; }; }; }; This is not a correct representation of the hardware. Mapping the PMU (Power Management Unit) IO memory should be via syscon-like phandle (samsung,pmu-syscon, already used for other drivers), not by duplicating "pmu" Devicetree node inside the FIMC IS. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> --- .../media/samsung,exynos4212-fimc-is.yaml | 15 ++++++++++----- .../devicetree/bindings/media/samsung,fimc.yaml | 5 +---- 2 files changed, 11 insertions(+), 9 deletions(-)