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[1/2] dt-bindings: display: panel: Add Visionox R66451 AMOLED DSI panel bindings

Message ID 20230516-b4-r66451-panel-driver-v1-1-4210bcbb1649@quicinc.com
State Accepted
Commit 11c173b2b121153b8d56ef925bf898c87a7f8d2f
Headers show
Series Add support for Visionox R66451 AMOLED DSI panel | expand

Commit Message

Jessica Zhang May 16, 2023, 8:20 p.m. UTC
Document the 1080x2340 Visionox R66451 AMOLED DSI panel bindings

Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com>
---
 .../bindings/display/panel/visionox,r66451.yaml    | 59 ++++++++++++++++++++++
 1 file changed, 59 insertions(+)

Comments

Krzysztof Kozlowski May 17, 2023, 8:12 a.m. UTC | #1
On 16/05/2023 22:20, Jessica Zhang wrote:
> Document the 1080x2340 Visionox R66451 AMOLED DSI panel bindings
> 
> Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com>
> ---
>  .../bindings/display/panel/visionox,r66451.yaml    | 59 ++++++++++++++++++++++
>  1 file changed, 59 insertions(+)

If there is going to be new version:
A nit, subject: drop second/last, redundant "bindings". The
"dt-bindings" prefix is already stating that these are bindings.


Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof
Neil Armstrong May 26, 2023, 7:42 a.m. UTC | #2
On 22/05/2023 16:51, Marijn Suijten wrote:
> On 2023-05-22 11:05:38, Neil Armstrong wrote:
>> On 21/05/2023 12:30, Marijn Suijten wrote:
>>> On 2023-05-16 13:20:30, Jessica Zhang wrote:
>>>> Document the 1080x2340 Visionox R66451 AMOLED DSI panel bindings
>>>>
>>>> Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com>
>>>> ---
>>>>    .../bindings/display/panel/visionox,r66451.yaml    | 59 ++++++++++++++++++++++
>>>>    1 file changed, 59 insertions(+)
>>>>
>>>> diff --git a/Documentation/devicetree/bindings/display/panel/visionox,r66451.yaml b/Documentation/devicetree/bindings/display/panel/visionox,r66451.yaml
>>>> new file mode 100644
>>>> index 000000000000..6ba323683921
>>>> --- /dev/null
>>>> +++ b/Documentation/devicetree/bindings/display/panel/visionox,r66451.yaml
>>>> @@ -0,0 +1,59 @@
>>>> +# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
>>>> +%YAML 1.2
>>>> +---
>>>> +$id: http://devicetree.org/schemas/display/panel/visionox,r66451.yaml#
>>>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>>>> +
>>>> +title: Visionox R66451 AMOLED DSI Panel
>>>> +
>>>> +maintainers:
>>>> +  - Jessica Zhang <quic_jesszhan@quicinc.com>
>>>> +
>>>> +allOf:
>>>> +  - $ref: panel-common.yaml#
>>>> +
>>>> +properties:
>>>> +  compatible:
>>>> +    const: visionox,r66451
>>>> +
>>>> +  reg:
>>>> +    maxItems: 1
>>>> +    description: DSI virtual channel
>>>> +
>>>> +  vddio-supply: true
>>>> +  vdd-supply: true
>>>> +  port: true
>>>> +  reset-gpios: true
>>>
>>> Normally for cmd-mode panels there is also a `disp-te` pin which is
>>> optionally registered in dsi_host.c as GPIOD_IN, but on **ALL** my Sony
>>> phones this breaks vsync (as in: mdp5 stops receiving the interrupt, but
>>> we can see disp-te in /proc/interrupts then).
>>
>> Describing it as a gpio is wrong, it should be described as a pinctrl state instead.
> 
> We defined both in our DTS, what weirdness does it cause when then
> requested using GPIOD_IN?  It'd still be beneficial to see the vsync
> interrupt raise in /proc/interrupts (but it's just a waste of CPU cycles
> OTOH, this is all handled in the MDP hardware after all, so it's not
> something I'd like to enable by default).

Sure, but it's a sw hack, the pin has a TE function which directly goes to
the DSI logic, claiming it as a GPIO will set it as GPIO function.

On some platforms, PINMUX is only on output and input is always directed
to all HW blocks, seems it's not the case here !

> 
> Anyway, this is what we ended up doing to "fix" the bug (only bias the
> pin via pinctrl, omit the disp-te DTS property).  Thanks for confirming!
> 
> - Marijn
> 
>>
>> Neil
> 
> <snip>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/display/panel/visionox,r66451.yaml b/Documentation/devicetree/bindings/display/panel/visionox,r66451.yaml
new file mode 100644
index 000000000000..6ba323683921
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/visionox,r66451.yaml
@@ -0,0 +1,59 @@ 
+# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/visionox,r66451.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Visionox R66451 AMOLED DSI Panel
+
+maintainers:
+  - Jessica Zhang <quic_jesszhan@quicinc.com>
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    const: visionox,r66451
+
+  reg:
+    maxItems: 1
+    description: DSI virtual channel
+
+  vddio-supply: true
+  vdd-supply: true
+  port: true
+  reset-gpios: true
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - vddio-supply
+  - vdd-supply
+  - reset-gpios
+  - port
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    dsi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        panel@0 {
+            compatible = "visionox,r66451";
+            reg = <0>;
+            vddio-supply = <&vreg_l12c_1p8>;
+            vdd-supply = <&vreg_l13c_3p0>;
+
+            reset-gpios = <&tlmm 24 GPIO_ACTIVE_LOW>;
+
+            port {
+                panel0_in: endpoint {
+                    remote-endpoint = <&dsi0_out>;
+                };
+            };
+        };
+    };
+...