[v4] This series adds LT9211C bridge driver by extending LT9211.

[PATCH v4 1/2] dt-bindings: bridge: lt9211c: Add bindings

Posted by Venkata Gopi Nagaraju Botlagunta 1 month, 2 weeks ago

From: Yi Zhang <zhanyi@qti.qualcomm.com>

Add bindings for lt9211c.

Signed-off-by: Yi Zhang <zhanyi@qti.qualcomm.com>
Signed-off-by: Nilesh Laad <nilesh.laad@oss.qualcomm.com>
Signed-off-by: Gopi Botlagunta <venkata.botlagunta@oss.qualcomm.com>
---
 .../bindings/display/bridge/lontium,lt9211.yaml    | 42 ++++++++++++++++++++--
 1 file changed, 40 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/bridge/lontium,lt9211.yaml b/Documentation/devicetree/bindings/display/bridge/lontium,lt9211.yaml
index 9a6e9b25d14a..98079df61cbb 100644
--- a/Documentation/devicetree/bindings/display/bridge/lontium,lt9211.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/lontium,lt9211.yaml
@@ -4,19 +4,20 @@
 $id: http://devicetree.org/schemas/display/bridge/lontium,lt9211.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Lontium LT9211 DSI/LVDS/DPI to DSI/LVDS/DPI bridge.
+title: Lontium LT9211/LT9211C DSI/LVDS/DPI to DSI/LVDS/DPI bridge.
 
 maintainers:
   - Marek Vasut <marex@denx.de>
 
 description: |
-  The LT9211 are bridge devices which convert Single/Dual-Link DSI/LVDS
+  The LT9211 and LT9211C are bridge devices which convert Single/Dual-Link DSI/LVDS
   or Single DPI to Single/Dual-Link DSI/LVDS or Single DPI.
 
 properties:
   compatible:
     enum:
       - lontium,lt9211
+      - lontium,lt9211c
 
   reg:
     maxItems: 1
@@ -91,6 +92,43 @@ examples:
 
         vccio-supply = <&lt9211_1v8>;
 
+        ports {
+          #address-cells = <1>;
+          #size-cells = <0>;
+
+          port@0 {
+            reg = <0>;
+
+            endpoint {
+              remote-endpoint = <&dsi0_out>;
+            };
+          };
+
+          port@2 {
+            reg = <2>;
+
+            endpoint {
+              remote-endpoint = <&panel_in_lvds>;
+            };
+          };
+        };
+      };
+    };
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      lvds-bridge@3b {
+        compatible = "lontium,lt9211c";
+        reg = <0x3b>;
+
+        reset-gpios = <&tlmm 128 GPIO_ACTIVE_HIGH>;
+
+        vccio-supply = <&lt9211c_1v8>;
+
         ports {
           #address-cells = <1>;
           #size-cells = <0>;

-- 
2.34.1

Re: [PATCH v4 1/2] dt-bindings: bridge: lt9211c: Add bindings

Posted by Krzysztof Kozlowski 1 month, 2 weeks ago

On 24/12/2025 08:11, Venkata Gopi Nagaraju Botlagunta wrote:
> From: Yi Zhang <zhanyi@qti.qualcomm.com>
> 
> Add bindings for lt9211c.
> 
> Signed-off-by: Yi Zhang <zhanyi@qti.qualcomm.com>
> Signed-off-by: Nilesh Laad <nilesh.laad@oss.qualcomm.com>
> Signed-off-by: Gopi Botlagunta <venkata.botlagunta@oss.qualcomm.com>
> ---
>  .../bindings/display/bridge/lontium,lt9211.yaml    | 42 ++++++++++++++++++++--
>  1 file changed, 40 insertions(+), 2 deletions(-)
> 

Subject prefix is not correct one. It's not informative either.

A nit, subject: drop second/last, redundant "bindings". The
"dt-bindings" prefix is already stating that these are bindings.
See also:
https://elixir.bootlin.com/linux/v6.17-rc3/source/Documentation/devicetree/bindings/submitting-patches.rst#L18

Best regards,
Krzysztof

Re: [PATCH v4 1/2] dt-bindings: bridge: lt9211c: Add bindings

Posted by Krzysztof Kozlowski 1 month, 2 weeks ago

On Wed, Dec 24, 2025 at 12:41:40PM +0530, Venkata Gopi Nagaraju Botlagunta wrote:
> From: Yi Zhang <zhanyi@qti.qualcomm.com>
> 
> Add bindings for lt9211c.
> 
> Signed-off-by: Yi Zhang <zhanyi@qti.qualcomm.com>
> Signed-off-by: Nilesh Laad <nilesh.laad@oss.qualcomm.com>
> Signed-off-by: Gopi Botlagunta <venkata.botlagunta@oss.qualcomm.com>
> ---
>  .../bindings/display/bridge/lontium,lt9211.yaml    | 42 ++++++++++++++++++++--
>  1 file changed, 40 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/lontium,lt9211.yaml b/Documentation/devicetree/bindings/display/bridge/lontium,lt9211.yaml
> index 9a6e9b25d14a..98079df61cbb 100644
> --- a/Documentation/devicetree/bindings/display/bridge/lontium,lt9211.yaml
> +++ b/Documentation/devicetree/bindings/display/bridge/lontium,lt9211.yaml
> @@ -4,19 +4,20 @@
>  $id: http://devicetree.org/schemas/display/bridge/lontium,lt9211.yaml#
>  $schema: http://devicetree.org/meta-schemas/core.yaml#
>  
> -title: Lontium LT9211 DSI/LVDS/DPI to DSI/LVDS/DPI bridge.
> +title: Lontium LT9211/LT9211C DSI/LVDS/DPI to DSI/LVDS/DPI bridge.
>  
>  maintainers:
>    - Marek Vasut <marex@denx.de>
>  
>  description: |
> -  The LT9211 are bridge devices which convert Single/Dual-Link DSI/LVDS
> +  The LT9211 and LT9211C are bridge devices which convert Single/Dual-Link DSI/LVDS
>    or Single DPI to Single/Dual-Link DSI/LVDS or Single DPI.
>  
>  properties:
>    compatible:
>      enum:
>        - lontium,lt9211
> +      - lontium,lt9211c
>  
>    reg:
>      maxItems: 1
> @@ -91,6 +92,43 @@ examples:
>  
>          vccio-supply = <&lt9211_1v8>;
>  
> +        ports {
> +          #address-cells = <1>;
> +          #size-cells = <0>;
> +
> +          port@0 {
> +            reg = <0>;
> +
> +            endpoint {
> +              remote-endpoint = <&dsi0_out>;
> +            };
> +          };
> +
> +          port@2 {
> +            reg = <2>;
> +
> +            endpoint {
> +              remote-endpoint = <&panel_in_lvds>;
> +            };
> +          };
> +        };
> +      };
> +    };
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +
> +    i2c {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      lvds-bridge@3b {
> +        compatible = "lontium,lt9211c";

Don't add unnecessary examples.

Best regards,
Krzysztof