| Message ID | 20191016145756.16004-3-s.nawrocki@samsung.com (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
| Series | Exynos Adaptive Supply Voltage support | expand |
On Wed, 16 Oct 2019 at 17:58, Sylwester Nawrocki <s.nawrocki@samsung.com> wrote: > > This patch adds documentation of new optional "samsung,asv-bin" > property in the chipid device node and documents requirement of > "syscon" compatible string. These additions are needed to support > Exynos ASV (Adaptive Supply Voltage) feature. > > Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> > --- > Depends on patch ("8d0daa4c89c9 dt-bindings: arm: samsung: Convert > Exynos Chipid bindings to json-schema") already applied to Rob's > dt/next. > > Changes since v4: > - converted to YAML > > Changes since v3: > - none > > Changes since v2: > - corrected patch summary line prefix, the patch moved in the > sequence > > Changes since v1 (RFC): > - new patch > > .../bindings/arm/samsung/exynos-chipid.yaml | 31 +++++++++++++++++-- > 1 file changed, 28 insertions(+), 3 deletions(-) > > diff --git a/Documentation/devicetree/bindings/arm/samsung/exynos-chipid.yaml b/Documentation/devicetree/bindings/arm/samsung/exynos-chipid.yaml > index 9c573ad7dc7d..df84d9e9f4c2 100644 > --- a/Documentation/devicetree/bindings/arm/samsung/exynos-chipid.yaml > +++ b/Documentation/devicetree/bindings/arm/samsung/exynos-chipid.yaml > @@ -9,17 +9,42 @@ title: Samsung Exynos SoC series Chipid driver > maintainers: > - Krzysztof Kozlowski <krzk@kernel.org> > > +# Custom select to avoid matching all nodes with 'syscon' > +select: > + properties: > + compatible: > + contains: > + const: samsung,exynos4210-chipid > + required: > + - compatible > + > properties: > compatible: > - items: > - - const: samsung,exynos4210-chipid > + allOf: I think it was my mistake to use allOf in other Exynos bindings. It should not be needed. Rest looks good so with allOf removal: Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Best regards, Krzysztof
On 10/16/19 18:16, Krzysztof Kozlowski wrote: >> --- a/Documentation/devicetree/bindings/arm/samsung/exynos-chipid.yaml >> +++ b/Documentation/devicetree/bindings/arm/samsung/exynos-chipid.yaml >> @@ -9,17 +9,42 @@ title: Samsung Exynos SoC series Chipid driver BTW, I think we should rename the above title to talk about IP block/device rather than driver, e.g. -SAMSUNG Exynos SoCs Chipid driver. +SAMSUNG Exynos SoC series CHIPID subsystem >> +# Custom select to avoid matching all nodes with 'syscon' >> +select: >> + properties: >> + compatible: >> + contains: >> + const: samsung,exynos4210-chipid >> + required: >> + - compatible >> + >> properties: >> compatible: >> - items: >> - - const: samsung,exynos4210-chipid >> + allOf: > > I think it was my mistake to use allOf in other Exynos bindings. It > should not be needed. Indeed it seems to work well without allOf, I was wondering why we needed the custom select above AND allOf.
diff --git a/Documentation/devicetree/bindings/arm/samsung/exynos-chipid.yaml b/Documentation/devicetree/bindings/arm/samsung/exynos-chipid.yaml index 9c573ad7dc7d..df84d9e9f4c2 100644 --- a/Documentation/devicetree/bindings/arm/samsung/exynos-chipid.yaml +++ b/Documentation/devicetree/bindings/arm/samsung/exynos-chipid.yaml @@ -9,17 +9,42 @@ title: Samsung Exynos SoC series Chipid driver maintainers: - Krzysztof Kozlowski <krzk@kernel.org> +# Custom select to avoid matching all nodes with 'syscon' +select: + properties: + compatible: + contains: + const: samsung,exynos4210-chipid + required: + - compatible + properties: compatible: - items: - - const: samsung,exynos4210-chipid + allOf: + - items: + - const: samsung,exynos4210-chipid + - const: syscon reg: maxItems: 1 + samsung,asv-bin: + description: + Adaptive Supply Voltage bin selection. This can be used + to determine the ASV bin of an SoC if respective information + is missing in the CHIPID registers or in the OTP memory. + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + - enum: [ 0, 1, 2, 3 ] + +required: + - compatible + - reg + examples: - | chipid@10000000 { - compatible = "samsung,exynos4210-chipid"; + compatible = "samsung,exynos4210-chipid", "syscon"; reg = <0x10000000 0x100>; + samsung,asv-bin = <2>; };
This patch adds documentation of new optional "samsung,asv-bin" property in the chipid device node and documents requirement of "syscon" compatible string. These additions are needed to support Exynos ASV (Adaptive Supply Voltage) feature. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> --- Depends on patch ("8d0daa4c89c9 dt-bindings: arm: samsung: Convert Exynos Chipid bindings to json-schema") already applied to Rob's dt/next. Changes since v4: - converted to YAML Changes since v3: - none Changes since v2: - corrected patch summary line prefix, the patch moved in the sequence Changes since v1 (RFC): - new patch .../bindings/arm/samsung/exynos-chipid.yaml | 31 +++++++++++++++++-- 1 file changed, 28 insertions(+), 3 deletions(-) -- 2.17.1