linux-kernel - [PATCH 3/5] dt-bindings: msm/disp: Introduce interconnect bindings for MDSS on SDM845

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Message-Id: <20190508204219.31687-4-robdclark@gmail.com>
Date:   Wed,  8 May 2019 13:42:13 -0700
From:   Rob Clark <robdclark@...il.com>
To:     dri-devel@...ts.freedesktop.org
Cc:     Jayant Shekhar <jshekhar@...eaurora.org>,
        Sravanthi Kollukuduru <skolluku@...eaurora.org>,
        Rob Herring <robh@...nel.org>,
        Rob Clark <robdclark@...omium.org>,
        Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-arm-msm@...r.kernel.org, freedreno@...ts.freedesktop.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 3/5] dt-bindings: msm/disp: Introduce interconnect bindings for MDSS on SDM845

From: Jayant Shekhar <jshekhar@...eaurora.org>

Add interconnect properties such as interconnect provider specifier
, the edge source and destination ports which are required by the
interconnect API to configure interconnect path for MDSS.

Changes in v2:
	- None

Changes in v3:
	- Remove common property definitions (Rob Herring)

Changes in v4:
	- Use port macros and change port string names (Georgi Djakov)

Changes in v5-v7:
	- None

Signed-off-by: Sravanthi Kollukuduru <skolluku@...eaurora.org>
Signed-off-by: Jayant Shekhar <jshekhar@...eaurora.org>
Reviewed-by: Rob Herring <robh@...nel.org>
Signed-off-by: Rob Clark <robdclark@...omium.org>
---
 Documentation/devicetree/bindings/display/msm/dpu.txt | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/msm/dpu.txt b/Documentation/devicetree/bindings/display/msm/dpu.txt
index ad2e8830324e..a61dd40f3792 100644
--- a/Documentation/devicetree/bindings/display/msm/dpu.txt
+++ b/Documentation/devicetree/bindings/display/msm/dpu.txt
@@ -28,6 +28,11 @@ Required properties:
 - #address-cells: number of address cells for the MDSS children. Should be 1.
 - #size-cells: Should be 1.
 - ranges: parent bus address space is the same as the child bus address space.
+- interconnects : interconnect path specifier for MDSS according to
+  Documentation/devicetree/bindings/interconnect/interconnect.txt. Should be
+  2 paths corresponding to 2 AXI ports.
+- interconnect-names : MDSS will have 2 port names to differentiate between the
+  2 interconnect paths defined with interconnect specifier.
 
 Optional properties:
 - assigned-clocks: list of clock specifiers for clocks needing rate assignment
@@ -86,6 +91,11 @@ Example:
 		interrupt-controller;
 		#interrupt-cells = <1>;
 
+		interconnects = <&rsc_hlos MASTER_MDP0 &rsc_hlos SLAVE_EBI1>,
+				<&rsc_hlos MASTER_MDP1 &rsc_hlos SLAVE_EBI1>;
+
+		interconnect-names = "mdp0-mem", "mdp1-mem";
+
 		iommus = <&apps_iommu 0>;
 
 		#address-cells = <2>;
-- 
2.20.1