[PATCH v2 1/9] dt-binding: remoteproc: mediatek: Support dual-core SCP

From: Tinghan Shen <tinghan.shen@mediatek.com>
To: Bjorn Andersson <bjorn.andersson@linaro.org>,
	Mathieu Poirier <mathieu.poirier@linaro.org>,
	Rob Herring <robh+dt@kernel.org>,
	"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Lee Jones <lee.jones@linaro.org>,
	Benson Leung <bleung@chromium.org>,
	"Guenter Roeck" <groeck@chromium.org>,
	Sebastian Reichel <sebastian.reichel@collabora.com>,
	Daisuke Nojiri <dnojiri@chromium.org>,
	Kees Cook <keescook@chromium.org>,
	Tinghan Shen <tinghan.shen@mediatek.com>,
	"Gustavo A. R. Silva" <gustavoars@kernel.org>,
	Prashant Malani <pmalani@chromium.org>,
	Enric Balletbo i Serra <enric.balletbo@collabora.com>
Cc: <linux-remoteproc@vger.kernel.org>, <devicetree@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-mediatek@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>, <chrome-platform@lists.linux.dev>,
	<Project_Global_Chrome_Upstream_Group@mediatek.com>,
	<weishunc@google.com>
Subject: [PATCH v2 1/9] dt-binding: remoteproc: mediatek: Support dual-core SCP
Date: Wed, 8 Jun 2022 16:35:45 +0800	[thread overview]
Message-ID: <20220608083553.8697-2-tinghan.shen@mediatek.com> (raw)
In-Reply-To: <20220608083553.8697-1-tinghan.shen@mediatek.com>

The MT8195 SCP co-processor is a dual-core RISC-V MCU.

Add a new property to reference the sibling core and to assign
core id to SCP nodes. Also add a new compatile for the driver of
SCP 2nd core.

Signed-off-by: Tinghan Shen <tinghan.shen@mediatek.com>
---
 .../devicetree/bindings/remoteproc/mtk,scp.yaml     | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Documentation/devicetree/bindings/remoteproc/mtk,scp.yaml b/Documentation/devicetree/bindings/remoteproc/mtk,scp.yaml
index eec3b9c4c713..4576ff9b1f2d 100644
--- a/Documentation/devicetree/bindings/remoteproc/mtk,scp.yaml
+++ b/Documentation/devicetree/bindings/remoteproc/mtk,scp.yaml
@@ -20,6 +20,7 @@ properties:
       - mediatek,mt8186-scp
       - mediatek,mt8192-scp
       - mediatek,mt8195-scp
+      - mediatek,mt8195-scp-dual
 
   reg:
     description:
@@ -57,6 +58,17 @@ properties:
   memory-region:
     maxItems: 1
 
+  mediatek,scp-core:
+    $ref: "/schemas/types.yaml#/definitions/phandle-array"
+    description:
+      Reference to the sibling SCP core. This is required to
+      enable support for dual-core SCP.
+    items:
+      - items:
+          - description: Phandle of sibling SCP node.
+          - description: Core id of this SCP node
+            enum: [0, 1]
+
 required:
   - compatible
   - reg
@@ -115,6 +127,7 @@ examples:
         reg-names = "sram", "cfg", "l1tcm";
         clocks = <&infracfg CLK_INFRA_SCPSYS>;
         clock-names = "main";
+        mediatek,scp-core = <&scp_dual 0>;
 
         cros_ec {
             mediatek,rpmsg-name = "cros-ec-rpmsg";
-- 
2.18.0

