| Message ID | 20221006020444.15823-2-allen.chen@ite.com.tw (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | *** IT6505 driver read dt properties *** | expand |
On 06/10/2022 04:04, allen wrote: > From: allen chen <allen.chen@ite.com.tw> > > Add properties to restrict dp output data-lanes and clock. > > Signed-off-by: Pin-Yen Lin <treapking@chromium.org> > Signed-off-by: Allen Chen <allen.chen@ite.com.tw> > --- > .../bindings/display/bridge/ite,it6505.yaml | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > > diff --git a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml > index 833d11b2303a..f5482a614d05 100644 > --- a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml > +++ b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml > @@ -52,6 +52,16 @@ properties: > maxItems: 1 > description: extcon specifier for the Power Delivery > > + ite,dp-output-data-lane-count: > + description: restrict the dp output data-lanes with value of 1-4 Drop "with value of 1-4" because it is redundant, but instead explain what this property is about. "Restrict output" is not yet enough. Restrict the number? Or choose specific lanes? Why it cannot be data-lanes from video-interfaces? > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [ 1, 2, 4 ] > + > + ite,dp-output-max-pixel-clock-mhz: Test your patches before sending. Best regards, Krzysztof
On Thu, 06 Oct 2022 10:04:43 +0800, allen wrote: > From: allen chen <allen.chen@ite.com.tw> > > Add properties to restrict dp output data-lanes and clock. > > Signed-off-by: Pin-Yen Lin <treapking@chromium.org> > Signed-off-by: Allen Chen <allen.chen@ite.com.tw> > --- > .../bindings/display/bridge/ite,it6505.yaml | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check' on your patch (DT_CHECKER_FLAGS is new in v5.13): yamllint warnings/errors: dtschema/dtc warnings/errors: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml: properties:ite,dp-output-max-pixel-clock-mhz: '$ref' should not be valid under {'const': '$ref'} hint: Standard unit suffix properties don't need a type $ref from schema $id: http://devicetree.org/meta-schemas/core.yaml# doc reference errors (make refcheckdocs): See https://patchwork.ozlabs.org/patch/ This check can fail if there are any dependencies. The base for a patch series is generally the most recent rc1. If you already ran 'make dt_binding_check' and didn't see the above error(s), then make sure 'yamllint' is installed and dt-schema is up to date: pip3 install dtschema --upgrade Please check and re-submit.
On Wed, Oct 5, 2022 at 9:05 PM allen <allen.chen@ite.com.tw> wrote: > > From: allen chen <allen.chen@ite.com.tw> > > Add properties to restrict dp output data-lanes and clock. > > Signed-off-by: Pin-Yen Lin <treapking@chromium.org> > Signed-off-by: Allen Chen <allen.chen@ite.com.tw> > --- > .../bindings/display/bridge/ite,it6505.yaml | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > > diff --git a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml > index 833d11b2303a..f5482a614d05 100644 > --- a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml > +++ b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml > @@ -52,6 +52,16 @@ properties: > maxItems: 1 > description: extcon specifier for the Power Delivery > > + ite,dp-output-data-lane-count: > + description: restrict the dp output data-lanes with value of 1-4 > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [ 1, 2, 4 ] We have a standard property for lanes: data-lanes It goes in the endpoint. > + > + ite,dp-output-max-pixel-clock-mhz: > + description: restrict max pixel clock > + $ref: /schemas/types.yaml#/definitions/uint32 > + default: 150 Also have a common property for this: 'link-frequencies'
hi -----Original Message----- From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Sent: Thursday, October 6, 2022 4:17 PM To: Allen Chen (陳柏宇) <allen.chen@ite.com.tw> Cc: Jau-Chih Tseng (曾昭智) <Jau-Chih.Tseng@ite.com.tw>; Kenneth Hung (洪家倫) <Kenneth.Hung@ite.com.tw>; Hermes Wu (吳佳宏) <Hermes.Wu@ite.com.tw>; Pin-yen Lin <treapking@chromium.org>; Andrzej Hajda <andrzej.hajda@intel.com>; Neil Armstrong <narmstrong@baylibre.com>; Robert Foss <robert.foss@linaro.org>; Laurent Pinchart <Laurent.pinchart@ideasonboard.com>; Jonas Karlman <jonas@kwiboo.se>; Jernej Skrabec <jernej.skrabec@gmail.com>; David Airlie <airlied@linux.ie>; Daniel Vetter <daniel@ffwll.ch>; Rob Herring <robh+dt@kernel.org>; Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>; open list:DRM DRIVERS <dri-devel@lists.freedesktop.org>; open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS <devicetree@vger.kernel.org>; open list <linux-kernel@vger.kernel.org> Subject: Re: [PATCH v3 1/2] dt-bindings: it6505: add properties to restrict output bandwidth On 06/10/2022 04:04, allen wrote: > From: allen chen <allen.chen@ite.com.tw> > > Add properties to restrict dp output data-lanes and clock. > > Signed-off-by: Pin-Yen Lin <treapking@chromium.org> > Signed-off-by: Allen Chen <allen.chen@ite.com.tw> > --- > .../bindings/display/bridge/ite,it6505.yaml | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > > diff --git > a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml > b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml > index 833d11b2303a..f5482a614d05 100644 > --- a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml > +++ b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml > @@ -52,6 +52,16 @@ properties: > maxItems: 1 > description: extcon specifier for the Power Delivery > > + ite,dp-output-data-lane-count: > + description: restrict the dp output data-lanes with value of 1-4 Drop "with value of 1-4" because it is redundant, but instead explain what this property is about. "Restrict output" is not yet enough. Restrict the number? Or choose specific lanes? Why it cannot be data-lanes from video-interfaces? ==> DP output bandwidth depends on data-lane-count, so the number of output data-lane-count will restrict output bandwidth. In this dt-binding we don't have output endpoint, so use another property name to configure. If need to use data-lanes, where can we put in this dt-binding? > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [ 1, 2, 4 ] > + > + ite,dp-output-max-pixel-clock-mhz: Test your patches before sending. Best regards, Krzysztof
On 07/10/2022 05:18, allen.chen@ite.com.tw wrote: > hi > > -----Original Message----- > From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> > Sent: Thursday, October 6, 2022 4:17 PM > To: Allen Chen (陳柏宇) <allen.chen@ite.com.tw> > Cc: Jau-Chih Tseng (曾昭智) <Jau-Chih.Tseng@ite.com.tw>; Kenneth Hung (洪家倫) <Kenneth.Hung@ite.com.tw>; Hermes Wu (吳佳宏) <Hermes.Wu@ite.com.tw>; Pin-yen Lin <treapking@chromium.org>; Andrzej Hajda <andrzej.hajda@intel.com>; Neil Armstrong <narmstrong@baylibre.com>; Robert Foss <robert.foss@linaro.org>; Laurent Pinchart <Laurent.pinchart@ideasonboard.com>; Jonas Karlman <jonas@kwiboo.se>; Jernej Skrabec <jernej.skrabec@gmail.com>; David Airlie <airlied@linux.ie>; Daniel Vetter <daniel@ffwll.ch>; Rob Herring <robh+dt@kernel.org>; Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>; open list:DRM DRIVERS <dri-devel@lists.freedesktop.org>; open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS <devicetree@vger.kernel.org>; open list <linux-kernel@vger.kernel.org> > Subject: Re: [PATCH v3 1/2] dt-bindings: it6505: add properties to restrict output bandwidth > > On 06/10/2022 04:04, allen wrote: >> From: allen chen <allen.chen@ite.com.tw> >> >> Add properties to restrict dp output data-lanes and clock. >> >> Signed-off-by: Pin-Yen Lin <treapking@chromium.org> >> Signed-off-by: Allen Chen <allen.chen@ite.com.tw> >> --- >> .../bindings/display/bridge/ite,it6505.yaml | 12 ++++++++++++ >> 1 file changed, 12 insertions(+) >> >> diff --git >> a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml >> b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml >> index 833d11b2303a..f5482a614d05 100644 >> --- a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml >> +++ b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml >> @@ -52,6 +52,16 @@ properties: >> maxItems: 1 >> description: extcon specifier for the Power Delivery >> >> + ite,dp-output-data-lane-count: >> + description: restrict the dp output data-lanes with value of 1-4 > > Drop "with value of 1-4" because it is redundant, but instead explain what this property is about. "Restrict output" is not yet enough. > Restrict the number? Or choose specific lanes? Why it cannot be data-lanes from video-interfaces? > > ==> DP output bandwidth depends on data-lane-count, so the number of output data-lane-count will restrict output bandwidth. > In this dt-binding we don't have output endpoint, so use another property name to configure. > If need to use data-lanes, where can we put in this dt-binding? I see you got review in v2 to rename it, but it still should be the same property, if it has similar/same meaning. It can be put here. You just need to define its type or reference other schema (e.g. video-interfaces if applicable) which defines it. Best regards, Krzysztof
diff --git a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml index 833d11b2303a..f5482a614d05 100644 --- a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml +++ b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml @@ -52,6 +52,16 @@ properties: maxItems: 1 description: extcon specifier for the Power Delivery + ite,dp-output-data-lane-count: + description: restrict the dp output data-lanes with value of 1-4 + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [ 1, 2, 4 ] + + ite,dp-output-max-pixel-clock-mhz: + description: restrict max pixel clock + $ref: /schemas/types.yaml#/definitions/uint32 + default: 150 + port: $ref: /schemas/graph.yaml#/properties/port description: A port node pointing to DPI host port node @@ -84,6 +94,8 @@ examples: pwr18-supply = <&it6505_pp18_reg>; reset-gpios = <&pio 179 1>; extcon = <&usbc_extcon>; + ite,dp-output-data-lane-count = <2>; + ite,dp-output-max-pixel-clock-mhz = <150>; port { it6505_in: endpoint {