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Message-ID: <20250911151001.108744-6-ariel.dalessandro@collabora.com>
Date: Thu, 11 Sep 2025 12:09:54 -0300
From: Ariel D'Alessandro <ariel.dalessandro@...labora.com>
To: airlied@...il.com,
amergnat@...libre.com,
andrew+netdev@...n.ch,
andrew-ct.chen@...iatek.com,
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Cc: devicetree@...r.kernel.org,
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Subject: [PATCH v2 05/12] dt-bindings: display: mediatek,od: Add mediatek,gce-client-reg property
Currently, users of Mediatek OD (display overdrive) DT bindings set
mediatek,gce-client-reg node property, which is missing from the DT schema.
For example, device tree arch/arm64/boot/dts/mediatek/mt8173.dtsi is
causing the following dtb check error:
```
$ make CHECK_DTBS=y mediatek/mt8173-elm.dtb
SCHEMA Documentation/devicetree/bindings/processed-schema.json
DTC [C] arch/arm64/boot/dts/mediatek/mt8173-elm.dtb
[...]
arch/arm64/boot/dts/mediatek/mt8173-elm.dtb: od@...23000
(mediatek,mt8173-disp-od): 'mediatek,gce-client-reg' does not match
any of the regexes: '^pinctrl-[0-9]+$'
```
This commit adds the missing node property in the DT schema and updates the
example as well.
Signed-off-by: Ariel D'Alessandro <ariel.dalessandro@...labora.com>
---
.../bindings/display/mediatek/mediatek,od.yaml | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,od.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,od.yaml
index 71534febd49c6..930c088a722a8 100644
--- a/Documentation/devicetree/bindings/display/mediatek/mediatek,od.yaml
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,od.yaml
@@ -60,6 +60,18 @@ properties:
- port@0
- port@1
+ mediatek,gce-client-reg:
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ description: describes how to locate the GCE client register
+ items:
+ - items:
+ - description: Phandle reference to a Mediatek GCE Mailbox
+ - description:
+ GCE subsys id mapping to a client defined in header
+ include/dt-bindings/gce/<chip>-gce.h.
+ - description: offset for the GCE register offset
+ - description: size of the GCE register offset
+
required:
- compatible
- reg
@@ -70,6 +82,7 @@ additionalProperties: false
examples:
- |
#include <dt-bindings/clock/mt8173-clk.h>
+ #include <dt-bindings/gce/mt8173-gce.h>
soc {
#address-cells = <2>;
@@ -79,5 +92,6 @@ examples:
compatible = "mediatek,mt8173-disp-od";
reg = <0 0x14023000 0 0x1000>;
clocks = <&mmsys CLK_MM_DISP_OD>;
+ mediatek,gce-client-reg = <&gce SUBSYS_1402XXXX 0x3000 0x1000>;
};
};
--
2.50.1
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