diff mbox series

[02/22] dt-bindings: mediatek,dp: Add Display Port binding

Message ID 20220325171511.23493-3-granquet@baylibre.com (mailing list archive)
State New
Headers show
Series drm/mediatek: Add mt8195 DisplayPort driver | expand

Commit Message

Guillaume Ranquet March 25, 2022, 5:14 p.m. UTC
From: Markus Schneider-Pargmann <msp@baylibre.com>

This controller is present on several mediatek hardware. Currently
mt8195 and mt8395 have this controller without a functional difference,
so only one compatible field is added.

The controller can have two forms, as a normal display port and as an
embedded display port.

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Signed-off-by: Guillaume Ranquet <granquet@baylibre.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
 .../display/mediatek/mediatek,dp.yaml         | 97 +++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml

Comments

Krzysztof Kozlowski March 25, 2022, 5:43 p.m. UTC | #1
On 25/03/2022 18:14, Guillaume Ranquet wrote:
> From: Markus Schneider-Pargmann <msp@baylibre.com>
> 
> This controller is present on several mediatek hardware. Currently
> mt8195 and mt8395 have this controller without a functional difference,
> so only one compatible field is added.
> 
> The controller can have two forms, as a normal display port and as an
> embedded display port.
> 
> Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
> Signed-off-by: Guillaume Ranquet <granquet@baylibre.com>
> Reviewed-by: Rob Herring <robh@kernel.org>
> ---
>  .../display/mediatek/mediatek,dp.yaml         | 97 +++++++++++++++++++
>  1 file changed, 97 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml
> new file mode 100644
> index 000000000000..74db5c4e0f73
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml
> @@ -0,0 +1,97 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/mediatek/mediatek,dp.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Mediatek Display Port Controller
> +
> +maintainers:
> +  - CK Hu <ck.hu@mediatek.com>
> +  - Jitao shi <jitao.shi@mediatek.com>
> +
> +description: |
> +  Device tree bindings for the Mediatek (embedded) Display Port controller
> +  present on some Mediatek SoCs.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - mediatek,mt8195-dp-tx
> +      - syscon

This is wrong, should be a list. Are you sure you got Rob's review? I
see now v8 with his Reviewed-by tag, but without syscon, so he looked at
something else.

Please drop his tag and please test your changes. This would be easily
spotted with dt_binding_check.

> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clocks:
> +    items:
> +      - description: faxi clock
> +
> +  clock-names:
> +    items:
> +      - const: faxi
> +
> +  phys:
> +    maxItems: 1
> +
> +  phy-names:
> +    items:
> +      - const: dp
> +
> +  power-domains:
> +    maxItems: 1
> +
> +  ports:
> +    $ref: /schemas/graph.yaml#/properties/ports
> +    properties:
> +      port@0:
> +        $ref: /schemas/graph.yaml#/properties/port
> +        description: Input endpoint of the controller, usually dp_intf
> +
> +      port@1:
> +        $ref: /schemas/graph.yaml#/properties/port
> +        description: Output endpoint of the controller

None of the ports are required?

> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - ports
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/power/mt8195-power.h>
> +    edp_tx: edp_tx@1c500000 {

generic node name, so I guess "dp" as display-port.

> +        compatible = "mediatek,mt8195-dp-tx","syscon";
> +        reg = <0 0x1c500000 0 0x8000>;
> +        interrupts = <GIC_SPI 676 IRQ_TYPE_LEVEL_HIGH 0>;
> +        power-domains = <&spm MT8195_POWER_DOMAIN_EPD_TX>;
> +        pinctrl-names = "default";
> +        pinctrl-0 = <&edp_pin>;
> +        phys = <&dp_phy>;
> +        phy-names = "dp";
> +
> +        ports {
> +            #address-cells = <1>;
> +            #size-cells = <0>;
> +
> +            port@0 {
> +                reg = <0>;
> +                edp_in: endpoint {
> +                    remote-endpoint = <&dp_intf0_out>;
> +                };
> +            };
> +            port@1 {
> +                reg = <1>;
> +                edp_out: endpoint {
> +                	remote-endpoint = <&panel_in>;
> +                };
> +            };
> +        };
> +    };


Best regards,
Krzysztof
Rob Herring March 25, 2022, 6:43 p.m. UTC | #2
On Fri, 25 Mar 2022 18:14:51 +0100, Guillaume Ranquet wrote:
> From: Markus Schneider-Pargmann <msp@baylibre.com>
> 
> This controller is present on several mediatek hardware. Currently
> mt8195 and mt8395 have this controller without a functional difference,
> so only one compatible field is added.
> 
> The controller can have two forms, as a normal display port and as an
> embedded display port.
> 
> Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
> Signed-off-by: Guillaume Ranquet <granquet@baylibre.com>
> Reviewed-by: Rob Herring <robh@kernel.org>
> ---
>  .../display/mediatek/mediatek,dp.yaml         | 97 +++++++++++++++++++
>  1 file changed, 97 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml
> 

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:
Documentation/devicetree/bindings/display/mediatek/mediatek,dp.example.dts:24:18: fatal error: dt-bindings/power/mt8195-power.h: No such file or directory
   24 |         #include <dt-bindings/power/mt8195-power.h>
      |                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
make[1]: *** [scripts/Makefile.lib:378: Documentation/devicetree/bindings/display/mediatek/mediatek,dp.example.dt.yaml] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:1398: dt_binding_check] Error 2

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/patch/1609494

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.
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml
new file mode 100644
index 000000000000..74db5c4e0f73
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml
@@ -0,0 +1,97 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/mediatek/mediatek,dp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek Display Port Controller
+
+maintainers:
+  - CK Hu <ck.hu@mediatek.com>
+  - Jitao shi <jitao.shi@mediatek.com>
+
+description: |
+  Device tree bindings for the Mediatek (embedded) Display Port controller
+  present on some Mediatek SoCs.
+
+properties:
+  compatible:
+    enum:
+      - mediatek,mt8195-dp-tx
+      - syscon
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: faxi clock
+
+  clock-names:
+    items:
+      - const: faxi
+
+  phys:
+    maxItems: 1
+
+  phy-names:
+    items:
+      - const: dp
+
+  power-domains:
+    maxItems: 1
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Input endpoint of the controller, usually dp_intf
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Output endpoint of the controller
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - ports
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/power/mt8195-power.h>
+    edp_tx: edp_tx@1c500000 {
+        compatible = "mediatek,mt8195-dp-tx","syscon";
+        reg = <0 0x1c500000 0 0x8000>;
+        interrupts = <GIC_SPI 676 IRQ_TYPE_LEVEL_HIGH 0>;
+        power-domains = <&spm MT8195_POWER_DOMAIN_EPD_TX>;
+        pinctrl-names = "default";
+        pinctrl-0 = <&edp_pin>;
+        phys = <&dp_phy>;
+        phy-names = "dp";
+
+        ports {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            port@0 {
+                reg = <0>;
+                edp_in: endpoint {
+                    remote-endpoint = <&dp_intf0_out>;
+                };
+            };
+            port@1 {
+                reg = <1>;
+                edp_out: endpoint {
+                	remote-endpoint = <&panel_in>;
+                };
+            };
+        };
+    };