diff mbox series

[v2,1/2] dt-bindings: display: bridge: ldb: Implement simple NXP i.MX8M LDB bridge

Message ID 20220418145105.76986-1-marex@denx.de (mailing list archive)
State New, archived
Headers show
Series [v2,1/2] dt-bindings: display: bridge: ldb: Implement simple NXP i.MX8M LDB bridge | expand

Commit Message

Marek Vasut April 18, 2022, 2:51 p.m. UTC 
The i.MX8MP contains two syscon registers which are responsible
for configuring the on-SoC DPI-to-LVDS serializer. Add DT binding
which represents this serializer as a bridge.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Maxime Ripard <maxime@cerno.tech>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Robby Cai <robby.cai@nxp.com>
Cc: Robert Foss <robert.foss@linaro.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: devicetree@vger.kernel.org
To: dri-devel@lists.freedesktop.org
---
V2: - Consistently use fsl,imx8mp-ldb as compatible
    - Drop items: from compatible:
    - Replace minItems with maxItems in clocks:
    - Drop quotes from clock-names const: ldb
    - Rename syscon to fsl,syscon
    - Use generic name of ldb-lvds in example
---
 .../bindings/display/bridge/nxp,ldb.yaml      | 96 +++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/nxp,ldb.yaml

Comments

Sam Ravnborg April 22, 2022, 6:23 p.m. UTC | #1 
On Mon, Apr 18, 2022 at 04:51:04PM +0200, Marek Vasut wrote:
> The i.MX8MP contains two syscon registers which are responsible
> for configuring the on-SoC DPI-to-LVDS serializer. Add DT binding
> which represents this serializer as a bridge.
> 
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Cc: Lucas Stach <l.stach@pengutronix.de>
> Cc: Maxime Ripard <maxime@cerno.tech>
> Cc: Peng Fan <peng.fan@nxp.com>
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: Robby Cai <robby.cai@nxp.com>
> Cc: Robert Foss <robert.foss@linaro.org>
> Cc: Sam Ravnborg <sam@ravnborg.org>
> Cc: Thomas Zimmermann <tzimmermann@suse.de>
> Cc: devicetree@vger.kernel.org
> To: dri-devel@lists.freedesktop.org
Acked-by: Sam Ravnborg <sam@ravnborg.org> but you need an ack from
someone else before you apply as I am not an expert here.

	Sam
> ---
> V2: - Consistently use fsl,imx8mp-ldb as compatible
>     - Drop items: from compatible:
>     - Replace minItems with maxItems in clocks:
>     - Drop quotes from clock-names const: ldb
>     - Rename syscon to fsl,syscon
>     - Use generic name of ldb-lvds in example
> ---
>  .../bindings/display/bridge/nxp,ldb.yaml      | 96 +++++++++++++++++++
>  1 file changed, 96 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/bridge/nxp,ldb.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/nxp,ldb.yaml b/Documentation/devicetree/bindings/display/bridge/nxp,ldb.yaml
> new file mode 100644
> index 0000000000000..f3182566eb316
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/bridge/nxp,ldb.yaml
> @@ -0,0 +1,96 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/bridge/nxp,ldb.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: NXP i.MX8M DPI to LVDS bridge chip
> +
> +maintainers:
> +  - Marek Vasut <marex@denx.de>
> +
> +description: |
> +  The i.MX8MP contains two syscon registers which are responsible
> +  for configuring the on-SoC DPI-to-LVDS serializer. This describes
> +  those registers as bridge within the DT.
> +
> +properties:
> +  compatible:
> +    const: fsl,imx8mp-ldb
> +
> +  clocks:
> +    maxItems: 1
> +
> +  clock-names:
> +    const: ldb
> +
> +  fsl,syscon:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description: A phandle to media block controller.
> +
> +  ports:
> +    $ref: /schemas/graph.yaml#/properties/ports
> +
> +    properties:
> +      port@0:
> +        $ref: /schemas/graph.yaml#/properties/port
> +        description: Video port for DPI input.
> +
> +      port@1:
> +        $ref: /schemas/graph.yaml#/properties/port
> +        description: Video port for LVDS Channel-A output (panel or bridge).
> +
> +      port@2:
> +        $ref: /schemas/graph.yaml#/properties/port
> +        description: Video port for LVDS Channel-B output (panel or bridge).
> +
> +    required:
> +      - port@0
> +      - port@1
> +
> +required:
> +  - compatible
> +  - clocks
> +  - fsl,syscon
> +  - ports
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/imx8mp-clock.h>
> +
> +    bridge {
> +        compatible = "fsl,imx8mp-ldb";
> +        clocks = <&clk IMX8MP_CLK_MEDIA_LDB>;
> +        clock-names = "ldb";
> +        fsl,syscon = <&media_blk_ctrl>;
> +
> +        ports {
> +            #address-cells = <1>;
> +            #size-cells = <0>;
> +
> +            port@0 {
> +                reg = <0>;
> +
> +                ldb_from_lcdif2: endpoint {
> +                    remote-endpoint = <&lcdif2_to_ldb>;
> +                };
> +            };
> +
> +            port@1 {
> +                reg = <1>;
> +
> +                ldb_lvds_ch0: endpoint {
> +                    remote-endpoint = <&ldb_to_lvdsx4panel>;
> +                };
> +            };
> +
> +            port@2 {
> +                reg = <2>;
> +
> +                ldb_lvds_ch1: endpoint {
> +                };
> +            };
> +        };
> +    };
> -- 
> 2.35.1
Sam Ravnborg April 22, 2022, 6:26 p.m. UTC | #2 
Hi Marek, I read the patch once more.

On Mon, Apr 18, 2022 at 04:51:04PM +0200, Marek Vasut wrote:
> The i.MX8MP contains two syscon registers which are responsible

Here it says i.MX8MP

> for configuring the on-SoC DPI-to-LVDS serializer. Add DT binding
> which represents this serializer as a bridge.
> 
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Cc: Lucas Stach <l.stach@pengutronix.de>
> Cc: Maxime Ripard <maxime@cerno.tech>
> Cc: Peng Fan <peng.fan@nxp.com>
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: Robby Cai <robby.cai@nxp.com>
> Cc: Robert Foss <robert.foss@linaro.org>
> Cc: Sam Ravnborg <sam@ravnborg.org>
> Cc: Thomas Zimmermann <tzimmermann@suse.de>
> Cc: devicetree@vger.kernel.org
> To: dri-devel@lists.freedesktop.org
> ---
> V2: - Consistently use fsl,imx8mp-ldb as compatible
>     - Drop items: from compatible:
>     - Replace minItems with maxItems in clocks:
>     - Drop quotes from clock-names const: ldb
>     - Rename syscon to fsl,syscon
>     - Use generic name of ldb-lvds in example
> ---
>  .../bindings/display/bridge/nxp,ldb.yaml      | 96 +++++++++++++++++++
>  1 file changed, 96 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/bridge/nxp,ldb.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/nxp,ldb.yaml b/Documentation/devicetree/bindings/display/bridge/nxp,ldb.yaml
> new file mode 100644
> index 0000000000000..f3182566eb316
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/bridge/nxp,ldb.yaml
> @@ -0,0 +1,96 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/bridge/nxp,ldb.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: NXP i.MX8M DPI to LVDS bridge chip
Here it says i.MX8M 
> +
> +maintainers:
> +  - Marek Vasut <marex@denx.de>
> +
> +description: |
> +  The i.MX8MP contains two syscon registers which are responsible
Here it says i.MX8MP

> +  for configuring the on-SoC DPI-to-LVDS serializer. This describes
> +  those registers as bridge within the DT.
> +
> +properties:
> +  compatible:
> +    const: fsl,imx8mp-ldb
Here it says fsl,imx8mp


It looks a little inconsistent, I guess the title needs a fix.
a-b stands with the title fixed.

	Sam
> +
> +  clocks:
> +    maxItems: 1
> +
> +  clock-names:
> +    const: ldb
> +
> +  fsl,syscon:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description: A phandle to media block controller.
> +
> +  ports:
> +    $ref: /schemas/graph.yaml#/properties/ports
> +
> +    properties:
> +      port@0:
> +        $ref: /schemas/graph.yaml#/properties/port
> +        description: Video port for DPI input.
> +
> +      port@1:
> +        $ref: /schemas/graph.yaml#/properties/port
> +        description: Video port for LVDS Channel-A output (panel or bridge).
> +
> +      port@2:
> +        $ref: /schemas/graph.yaml#/properties/port
> +        description: Video port for LVDS Channel-B output (panel or bridge).
> +
> +    required:
> +      - port@0
> +      - port@1
> +
> +required:
> +  - compatible
> +  - clocks
> +  - fsl,syscon
> +  - ports
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/imx8mp-clock.h>
> +
> +    bridge {
> +        compatible = "fsl,imx8mp-ldb";
> +        clocks = <&clk IMX8MP_CLK_MEDIA_LDB>;
> +        clock-names = "ldb";
> +        fsl,syscon = <&media_blk_ctrl>;
> +
> +        ports {
> +            #address-cells = <1>;
> +            #size-cells = <0>;
> +
> +            port@0 {
> +                reg = <0>;
> +
> +                ldb_from_lcdif2: endpoint {
> +                    remote-endpoint = <&lcdif2_to_ldb>;
> +                };
> +            };
> +
> +            port@1 {
> +                reg = <1>;
> +
> +                ldb_lvds_ch0: endpoint {
> +                    remote-endpoint = <&ldb_to_lvdsx4panel>;
> +                };
> +            };
> +
> +            port@2 {
> +                reg = <2>;
> +
> +                ldb_lvds_ch1: endpoint {
> +                };
> +            };
> +        };
> +    };
> -- 
> 2.35.1
Marek Vasut April 23, 2022, 2:09 a.m. UTC | #3 
On 4/22/22 20:26, Sam Ravnborg wrote:
> Hi Marek, I read the patch once more.
> 
> On Mon, Apr 18, 2022 at 04:51:04PM +0200, Marek Vasut wrote:
>> The i.MX8MP contains two syscon registers which are responsible
> 
> Here it says i.MX8MP

Fixed, this and the bindings.
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/display/bridge/nxp,ldb.yaml b/Documentation/devicetree/bindings/display/bridge/nxp,ldb.yaml
new file mode 100644
index 0000000000000..f3182566eb316
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/nxp,ldb.yaml
@@ -0,0 +1,96 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/nxp,ldb.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP i.MX8M DPI to LVDS bridge chip
+
+maintainers:
+  - Marek Vasut <marex@denx.de>
+
+description: |
+  The i.MX8MP contains two syscon registers which are responsible
+  for configuring the on-SoC DPI-to-LVDS serializer. This describes
+  those registers as bridge within the DT.
+
+properties:
+  compatible:
+    const: fsl,imx8mp-ldb
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    const: ldb
+
+  fsl,syscon:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: A phandle to media block controller.
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Video port for DPI input.
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Video port for LVDS Channel-A output (panel or bridge).
+
+      port@2:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Video port for LVDS Channel-B output (panel or bridge).
+
+    required:
+      - port@0
+      - port@1
+
+required:
+  - compatible
+  - clocks
+  - fsl,syscon
+  - ports
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/imx8mp-clock.h>
+
+    bridge {
+        compatible = "fsl,imx8mp-ldb";
+        clocks = <&clk IMX8MP_CLK_MEDIA_LDB>;
+        clock-names = "ldb";
+        fsl,syscon = <&media_blk_ctrl>;
+
+        ports {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            port@0 {
+                reg = <0>;
+
+                ldb_from_lcdif2: endpoint {
+                    remote-endpoint = <&lcdif2_to_ldb>;
+                };
+            };
+
+            port@1 {
+                reg = <1>;
+
+                ldb_lvds_ch0: endpoint {
+                    remote-endpoint = <&ldb_to_lvdsx4panel>;
+                };
+            };
+
+            port@2 {
+                reg = <2>;
+
+                ldb_lvds_ch1: endpoint {
+                };
+            };
+        };
+    };