linux-kernel - [PATCH v3 2/2] dt-bindings: mediatek: Add optional mediatek,gce-events property

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Message-Id: <20210504054612.3585017-2-hsinyi@chromium.org>
Date:   Tue,  4 May 2021 13:46:12 +0800
From:   Hsin-Yi Wang <hsinyi@...omium.org>
To:     Matthias Brugger <matthias.bgg@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        devicetree@...r.kernel.org,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 2/2] dt-bindings: mediatek: Add optional mediatek,gce-events property

This property is used by gce clients.

Signed-off-by: Hsin-Yi Wang <hsinyi@...omium.org>
---
v2->v3: move definition to Documentation/devicetree/bindings/mailbox/mtk-gce.txt
---
 .../devicetree/bindings/mailbox/mtk-gce.txt       | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/Documentation/devicetree/bindings/mailbox/mtk-gce.txt b/Documentation/devicetree/bindings/mailbox/mtk-gce.txt
index 7771ecaac586..2ef7ff67cb2b 100644
--- a/Documentation/devicetree/bindings/mailbox/mtk-gce.txt
+++ b/Documentation/devicetree/bindings/mailbox/mtk-gce.txt
@@ -35,6 +35,10 @@ Optional properties for a client device:
   start_offset: the start offset of register address that GCE can access.
   size: the total size of register address that GCE can access.
 
+Optional properties for a client mutex node:
+- mediatek,gce-events: GCE events used by clients. The event numbers are
+  defined in 'dt-bindings/gce/<chip>-gce.h'.
+
 Some vaules of properties are defined in 'dt-bindings/gce/mt8173-gce.h',
 'dt-binding/gce/mt8183-gce.h' or 'dt-bindings/gce/mt6779-gce.h'. Such as
 sub-system ids, thread priority, event ids.
@@ -62,3 +66,14 @@ Example for a client device:
 					  <&gce SUBSYS_1401XXXX 0x2000 0x100>;
 		...
 	};
+
+Example for a client mutex node:
+	mutex: mutex@...20000 {
+		compatible = "mediatek,mt8173-disp-mutex";
+		reg = <0 0x14020000 0 0x1000>;
+		interrupts = <GIC_SPI 169 IRQ_TYPE_LEVEL_LOW>;
+		power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>;
+		clocks = <&mmsys CLK_MM_MUTEX_32K>;
+		mediatek,gce-events = <CMDQ_EVENT_MUTEX0_STREAM_EOF>,
+				      <CMDQ_EVENT_MUTEX1_STREAM_EOF>;
+	};
-- 
2.31.1.527.g47e6f16901-goog