linux-kernel - [PATCH 01/12] dt-bindings: display: sprd: adapt for UMS9230 support

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Message-Id: <20250719-ums9230-drm-v1-1-e4344a05eb3d@abscue.de>
Date: Sat, 19 Jul 2025 14:09:37 +0200
From: Otto Pflüger <otto.pflueger@...cue.de>
To: David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Orson Zhai <orsonzhai@...il.com>, 
 Baolin Wang <baolin.wang@...ux.alibaba.com>, 
 Chunyan Zhang <zhang.lyra@...il.com>, Kevin Tang <kevin.tang@...soc.com>
Cc: dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, 
 Otto Pflüger <otto.pflueger@...cue.de>
Subject: [PATCH 01/12] dt-bindings: display: sprd: adapt for UMS9230
 support

Add the compatible strings for the display controller found in the
UMS9230 SoC and bindings for a gate clock. Add IOMMU-related bindings
to the display-subsystem node.

Signed-off-by: Otto Pflüger <otto.pflueger@...cue.de>
---
 .../bindings/display/sprd/sprd,display-subsystem.yaml  | 11 +++++++++++
 .../bindings/display/sprd/sprd,sharkl3-dpu.yaml        | 18 +++++++++++++-----
 .../bindings/display/sprd/sprd,sharkl3-dsi-host.yaml   | 11 ++++++++---
 3 files changed, 32 insertions(+), 8 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/sprd/sprd,display-subsystem.yaml b/Documentation/devicetree/bindings/display/sprd/sprd,display-subsystem.yaml
index b3d5e1b96fae2f24ff2afb26c9c3ce0212856be4..d02f79c602f515533f60a993539ed7cd82ce22ec 100644
--- a/Documentation/devicetree/bindings/display/sprd/sprd,display-subsystem.yaml
+++ b/Documentation/devicetree/bindings/display/sprd/sprd,display-subsystem.yaml
@@ -43,6 +43,17 @@ properties:
   compatible:
     const: sprd,display-subsystem
 
+  iommus:
+    maxItems: 1
+
+  memory-region:
+    maxItems: 1
+    description:
+      A phandle to the framebuffer region configured by the bootloader. This
+      can be used together with an iommu-addresses property on the reserved
+      memory region to create an initial passthrough mapping for the boot
+      splash framebuffer.
+
   ports:
     $ref: /schemas/types.yaml#/definitions/phandle-array
     items:
diff --git a/Documentation/devicetree/bindings/display/sprd/sprd,sharkl3-dpu.yaml b/Documentation/devicetree/bindings/display/sprd/sprd,sharkl3-dpu.yaml
index 4ebea60b8c5ba5f177854e3a8d89e93e7304e18b..6fedb6e508b247eb71da17ced589b8ed09085592 100644
--- a/Documentation/devicetree/bindings/display/sprd/sprd,sharkl3-dpu.yaml
+++ b/Documentation/devicetree/bindings/display/sprd/sprd,sharkl3-dpu.yaml
@@ -16,7 +16,12 @@ description: |
 
 properties:
   compatible:
-    const: sprd,sharkl3-dpu
+    oneOf:
+      - items:
+          - enum:
+              - sprd,ums9230-dpu
+          - const: sprd,sharkl3-dpu
+      - const: sprd,sharkl3-dpu
 
   reg:
     maxItems: 1
@@ -25,12 +30,15 @@ properties:
     maxItems: 1
 
   clocks:
-    minItems: 2
+    minItems: 1
 
   clock-names:
-    items:
-      - const: clk_src_128m
-      - const: clk_src_384m
+    oneOf:
+      - items:
+        - const: clk_src_128m
+        - const: clk_src_384m
+      - items:
+        - const: enable
 
   power-domains:
     maxItems: 1
diff --git a/Documentation/devicetree/bindings/display/sprd/sprd,sharkl3-dsi-host.yaml b/Documentation/devicetree/bindings/display/sprd/sprd,sharkl3-dsi-host.yaml
index bc5594d18643010b91376c92a8f235a522d7dc3d..8438d2da0a4277db03e30b13cb270684c0c360cb 100644
--- a/Documentation/devicetree/bindings/display/sprd/sprd,sharkl3-dsi-host.yaml
+++ b/Documentation/devicetree/bindings/display/sprd/sprd,sharkl3-dsi-host.yaml
@@ -11,7 +11,9 @@ maintainers:
 
 properties:
   compatible:
-    const: sprd,sharkl3-dsi-host
+    enum:
+      - sprd,sharkl3-dsi-host
+      - sprd,ums9230-dsi-host
 
   reg:
     maxItems: 1
@@ -23,8 +25,11 @@ properties:
     minItems: 1
 
   clock-names:
-    items:
-      - const: clk_src_96m
+    oneOf:
+      - items:
+          - const: clk_src_96m
+      - items:
+          - const: enable
 
   power-domains:
     maxItems: 1

-- 
2.50.0