| Message ID | 20230619165525.1035243-5-dario.binacchi@amarulasolutions.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add display support on the stm32f746-disco board | expand |
On Mon, 19 Jun 2023 18:55:23 +0200, Dario Binacchi wrote: > Boards that use the STM32F{4,7} series have limited amounts of RAM. The > added property allows to size, within certain limits, the memory footprint > required by the framebuffer. > > Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com> > --- > > (no changes since v1) > > .../devicetree/bindings/display/st,stm32-ltdc.yaml | 6 ++++++ > 1 file changed, 6 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/st,stm32-ltdc.yaml: properties:st,fb-bpp:maxItems: False schema does not allow 1 from schema $id: http://devicetree.org/meta-schemas/core.yaml# doc reference errors (make refcheckdocs): See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20230619165525.1035243-5-dario.binacchi@amarulasolutions.com The base for the series is generally the latest rc1. A different dependency should be noted in *this* patch. 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 after running the above command yourself. Note that DT_SCHEMA_FILES can be set to your schema file to speed up checking your schema. However, it must be unset to test all examples with your schema.
Hey, On Mon, Jun 19, 2023 at 06:55:23PM +0200, Dario Binacchi wrote: > Boards that use the STM32F{4,7} series have limited amounts of RAM. The > added property allows to size, within certain limits, the memory footprint > required by the framebuffer. Hmm, this sounds quite a lot like "software policy", since the actual display doesn't have these limitations. Rob, Krzysztof? > > Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com> > --- > > (no changes since v1) Really? https://lore.kernel.org/all/?q=dfn:st,stm32-ltdc.yaml%20 You sure this shouldn't be "new in v4"? > .../devicetree/bindings/display/st,stm32-ltdc.yaml | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/Documentation/devicetree/bindings/display/st,stm32-ltdc.yaml b/Documentation/devicetree/bindings/display/st,stm32-ltdc.yaml > index d6ea4d62a2cf..1c3a3653579f 100644 > --- a/Documentation/devicetree/bindings/display/st,stm32-ltdc.yaml > +++ b/Documentation/devicetree/bindings/display/st,stm32-ltdc.yaml > @@ -42,6 +42,12 @@ properties: > - for internal dpi input of the MIPI DSI host controller. > Note: These 2 endpoints cannot be activated simultaneously. > > + st,fb-bpp: Is there not a more understandable property name than this? Maybe I just had to think about it because fbdev stuff aint something I've worked with... > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: | > + bit depth of framebuffer (8, 16 or 32) > + maxItems: 1 Why not make it an enum, since there are only 4 values? Cheers, Conor. > + > required: > - compatible > - reg > -- > 2.32.0 >
On Mon, Jun 19, 2023 at 09:18:25PM +0100, Conor Dooley wrote: > Hey, > > On Mon, Jun 19, 2023 at 06:55:23PM +0200, Dario Binacchi wrote: > > Boards that use the STM32F{4,7} series have limited amounts of RAM. The > > added property allows to size, within certain limits, the memory footprint > > required by the framebuffer. > > Hmm, this sounds quite a lot like "software policy", since the actual > display doesn't have these limitations. Rob, Krzysztof? Indeed. This doesn't belong in DT. Rob
diff --git a/Documentation/devicetree/bindings/display/st,stm32-ltdc.yaml b/Documentation/devicetree/bindings/display/st,stm32-ltdc.yaml index d6ea4d62a2cf..1c3a3653579f 100644 --- a/Documentation/devicetree/bindings/display/st,stm32-ltdc.yaml +++ b/Documentation/devicetree/bindings/display/st,stm32-ltdc.yaml @@ -42,6 +42,12 @@ properties: - for internal dpi input of the MIPI DSI host controller. Note: These 2 endpoints cannot be activated simultaneously. + st,fb-bpp: + $ref: /schemas/types.yaml#/definitions/uint32 + description: | + bit depth of framebuffer (8, 16 or 32) + maxItems: 1 + required: - compatible - reg
Boards that use the STM32F{4,7} series have limited amounts of RAM. The added property allows to size, within certain limits, the memory footprint required by the framebuffer. Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com> --- (no changes since v1) .../devicetree/bindings/display/st,stm32-ltdc.yaml | 6 ++++++ 1 file changed, 6 insertions(+)