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From:   Nina Wu <nina-cm.wu@mediatek.com>
To:     Rob Herring <robh+dt@kernel.org>,
        Matthias Brugger <matthias.bgg@gmail.com>
CC:     Nina Wu <Nina-CM.Wu@mediatek.com>,
        Zhen Lei <thunder.leizhen@huawei.com>,
        Neal Liu <neal.liu@mediatek.com>, <devicetree@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-mediatek@lists.infradead.org>,
        <srv_heupstream@mediatek.com>, <Jackson-kt.Chang@mediatek.com>
Subject: [PATCH v3 1/7] dt-bindings: devapc: Add 'vio-idx-num' field to support mt8192
Date:   Fri, 9 Apr 2021 16:19:31 +0800
Message-ID: <1617956377-4075-1-git-send-email-nina-cm.wu@mediatek.com>
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From: Nina Wu <Nina-CM.Wu@mediatek.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.

Signed-off-by: Nina Wu <Nina-CM.Wu@mediatek.com>
---
 Documentation/devicetree/bindings/soc/mediatek/devapc.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/soc/mediatek/devapc.yaml b/Documentation/devicetree/bindings/soc/mediatek/devapc.yaml
index 31e4d3c..909e524 100644
--- a/Documentation/devicetree/bindings/soc/mediatek/devapc.yaml
+++ b/Documentation/devicetree/bindings/soc/mediatek/devapc.yaml
@@ -20,11 +20,17 @@ 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
+    maxItems: 1
+
   interrupts:
     description: A single interrupt specifier
     maxItems: 1
-- 
2.6.4