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Date: Thu, 31 Mar 2022 09:50:51 +0900 From: Kunihiko Hayashi <hayashi.kunihiko@...ionext.com> To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, Vinod Koul <vkoul@...nel.org>, Kishon Vijay Abraham I <kishon@...com>, Rob Herring <robh+dt@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org> Cc: Masami Hiramatsu <mhiramat@...nel.org>, linux-phy@...ts.infradead.org, devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH v3 5/5] dt-bindings: phy: uniphier: Clean up clocks, resets, and their names using compatible string Hi Krzysztof, On 2022/03/31 2:40, Krzysztof Kozlowski wrote: > On 30/03/2022 12:55, Kunihiko Hayashi wrote: >> Instead of "oneOf:" choices, use "allOf:" and "if:" to define clocks, >> clock-names, resets, and reset-names that can be taken by the compatible >> string. >> >> The order of clock-names and reset-names doesn't change here. >> >> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@...ionext.com> >> --- >> .../phy/socionext,uniphier-ahci-phy.yaml | 90 +++++++++++++----- >> .../phy/socionext,uniphier-pcie-phy.yaml | 47 ++++++--- >> .../phy/socionext,uniphier-usb3hs-phy.yaml | 93 ++++++++++++++---- >> .../phy/socionext,uniphier-usb3ss-phy.yaml | 95 +++++++++++++++---- >> 4 files changed, 251 insertions(+), 74 deletions(-) >> > > (...) > >> diff --git >> a/Documentation/devicetree/bindings/phy/socionext,uniphier-usb3hs-phy.yaml >> b/Documentation/devicetree/bindings/phy/socionext,uniphier-usb3hs-phy.yaml >> index 1bbd164f2527..21e4414eea60 100644 >> --- >> a/Documentation/devicetree/bindings/phy/socionext,uniphier-usb3hs-phy.yaml >> +++ >> b/Documentation/devicetree/bindings/phy/socionext,uniphier-usb3hs-phy.yaml >> @@ -34,30 +34,12 @@ properties: >> minItems: 2 >> maxItems: 3 >> >> - clock-names: >> - oneOf: >> - - items: # for Pro5 >> - - const: gio >> - - const: link >> - - items: # for PXs3 with phy-ext >> - - const: link >> - - const: phy >> - - const: phy-ext >> - - items: # for others >> - - const: link >> - - const: phy >> + clock-names: true >> >> resets: >> maxItems: 2 >> >> - reset-names: >> - oneOf: >> - - items: # for Pro5 >> - - const: gio >> - - const: link >> - - items: # for others >> - - const: link >> - - const: phy >> + reset-names: true >> >> vbus-supply: >> description: A phandle to the regulator for USB VBUS >> @@ -80,6 +62,77 @@ properties: >> required for each port, if any one is omitted, the trimming data >> of the port will not be set at all. >> >> +allOf: >> + - if: >> + properties: >> + compatible: >> + contains: >> + const: socionext,uniphier-pro5-usb3-hsphy >> + then: >> + properties: >> + clocks: >> + minItems: 2 >> + maxItems: 2 >> + clock-names: >> + items: >> + - const: gio >> + - const: link >> + resets: >> + minItems: 2 >> + maxItems: 2 >> + reset-names: >> + items: >> + - const: gio >> + - const: link >> + - if: >> + properties: >> + compatible: >> + contains: >> + enum: >> + - socionext,uniphier-pxs2-usb3-hsphy >> + - socionext,uniphier-ld20-usb3-hsphy >> + then: >> + properties: >> + clocks: >> + minItems: 2 >> + maxItems: 2 >> + clock-names: >> + items: >> + - const: link >> + - const: phy >> + resets: >> + minItems: 2 >> + maxItems: 2 >> + reset-names: >> + items: >> + - const: link >> + - const: phy >> + - if: >> + properties: >> + compatible: >> + contains: >> + enum: >> + - socionext,uniphier-pxs3-usb3-hsphy >> + - socionext,uniphier-nx1-usb3-hsphy >> + then: >> + properties: >> + clocks: >> + minItems: 2 > > Why minItems:2? Is the last phy-ext clock optional? In an SoC with two controllers, there is a controller that requires extra clock and a controller that does not. For example, PXs3 USB3 controller 1 needs "phy-ext" clock, but the controller 0 doesn't. This difference is related to the phy configuration, where the controller 1 requires more clocks because it shares the phy with other subsystems. So I think the last phy-ext clock should be optional. > >> + maxItems: 3 >> + clock-names: >> + minItems: 2 >> + items: >> + - const: link >> + - const: phy >> + - const: phy-ext >> + resets: >> + minItems: 2 >> + maxItems: 2 >> + reset-names: >> + items: >> + - const: link >> + - const: phy >> + >> required: >> - compatible >> - reg >> diff --git >> a/Documentation/devicetree/bindings/phy/socionext,uniphier-usb3ss-phy.yaml >> b/Documentation/devicetree/bindings/phy/socionext,uniphier-usb3ss-phy.yaml >> index 06c957d52d23..4c26d2d2303d 100644 >> --- >> a/Documentation/devicetree/bindings/phy/socionext,uniphier-usb3ss-phy.yaml >> +++ >> b/Documentation/devicetree/bindings/phy/socionext,uniphier-usb3ss-phy.yaml >> @@ -35,34 +35,89 @@ properties: >> minItems: 2 >> maxItems: 3 >> >> - clock-names: >> - oneOf: >> - - items: # for Pro4, Pro5 >> - - const: gio >> - - const: link >> - - items: # for PXs3 with phy-ext >> - - const: link >> - - const: phy >> - - const: phy-ext >> - - items: # for others >> - - const: link >> - - const: phy >> + clock-names: true >> >> resets: >> maxItems: 2 >> >> - reset-names: >> - oneOf: >> - - items: # for Pro4,Pro5 >> - - const: gio >> - - const: link >> - - items: # for others >> - - const: link >> - - const: phy >> + reset-names: true >> >> vbus-supply: >> description: A phandle to the regulator for USB VBUS, only for USB >> host >> >> +allOf: >> + - if: >> + properties: >> + compatible: >> + contains: >> + enum: >> + - socionext,uniphier-pro4-usb3-ssphy >> + - socionext,uniphier-pro5-usb3-ssphy >> + then: >> + properties: >> + clocks: >> + minItems: 2 >> + maxItems: 2 >> + clock-names: >> + items: >> + - const: gio >> + - const: link >> + resets: >> + minItems: 2 >> + maxItems: 2 >> + reset-names: >> + items: >> + - const: gio >> + - const: link >> + - if: >> + properties: >> + compatible: >> + contains: >> + enum: >> + - socionext,uniphier-pxs2-usb3-ssphy >> + - socionext,uniphier-ld20-usb3-ssphy >> + then: >> + properties: >> + clocks: >> + minItems: 2 >> + maxItems: 2 >> + clock-names: >> + items: >> + - const: link >> + - const: phy >> + resets: >> + minItems: 2 >> + maxItems: 2 >> + reset-names: >> + items: >> + - const: link >> + - const: phy >> + - if: >> + properties: >> + compatible: >> + contains: >> + enum: >> + - socionext,uniphier-pxs3-usb3-ssphy >> + - socionext,uniphier-nx1-usb3-ssphy >> + then: >> + properties: >> + clocks: >> + minItems: 2 > > Same question as above. This is also the same reason. Thank you, --- Best Regards Kunihiko Hayashi
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