linux-kernel - [v4 1/7] dt-bindings: devapc: Add 'vio-idx-num' field to support mt8192

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Date:   Mon, 9 Aug 2021 11:08:13 +0800
From:   Nina Wu <nina-cm.wu@...iatek.com>
To:     unlisted-recipients:; (no To-header on input)
CC:     Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Nina Wu <Nina-CM.Wu@...iatek.com>,
        Neal Liu <neal.liu@...iatek.com>,
        Zhen Lei <thunder.leizhen@...wei.com>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <srv_heupstream@...iatek.com>, <Jackson-kt.Chang@...iatek.com>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: [v4 1/7] dt-bindings: devapc: Add 'vio-idx-num' field to support mt8192

From: Nina Wu <Nina-CM.Wu@...iatek.com>

For new ICs, there are multiple devapc HWs for different subsys.
We add a field 'vio-idx-num' in DT to indicate the number of
devices controlled by each devapc.
To be backward compatible with old ICs which have only one devapc
HW, this field is not required. The 'vio-idx-num' info will be set
in compatible data instead.

Reviewed-by: Rob Herring <robh@...nel.org>
Signed-off-by: Nina Wu <Nina-CM.Wu@...iatek.com>
---
 Documentation/devicetree/bindings/soc/mediatek/devapc.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/soc/mediatek/devapc.yaml b/Documentation/devicetree/bindings/soc/mediatek/devapc.yaml
index 31e4d3c..69abd03 100644
--- a/Documentation/devicetree/bindings/soc/mediatek/devapc.yaml
+++ b/Documentation/devicetree/bindings/soc/mediatek/devapc.yaml
@@ -20,11 +20,16 @@ properties:
   compatible:
     enum:
       - mediatek,mt6779-devapc
+      - mediatek,mt8192-devapc
 
   reg:
     description: The base address of devapc register bank
     maxItems: 1
 
+  mediatek,vio-idx-num:
+    description: The number of the devices controlled by devapc
+    $ref: /schemas/types.yaml#/definitions/uint32
+
   interrupts:
     description: A single interrupt specifier
     maxItems: 1
-- 
2.6.4