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Message-Id: <20250217-b4-sm8750-display-v2-4-d201dcdda6a4@linaro.org>
Date: Mon, 17 Feb 2025 17:41:25 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Rob Clark <robdclark@...il.com>,
Abhinav Kumar <quic_abhinavk@...cinc.com>,
Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, Sean Paul <sean@...rly.run>,
Marijn Suijten <marijn.suijten@...ainline.org>,
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>,
Krishna Manikandan <quic_mkrishn@...cinc.com>,
Jonathan Marek <jonathan@...ek.ca>, Kuogee Hsieh <quic_khsieh@...cinc.com>,
Neil Armstrong <neil.armstrong@...aro.org>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
Srini Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH v2 04/16] dt-bindings: display/msm: dsi-controller-main:
Add SM8750
Add DSI controller for Qualcomm SM8750 SoC which is quite different from
previous (SM8650) generation.
It does not allow the display clock controller clocks like "byte" and
"pixel" to be reparented to DSI PHY PLLs while the DSI PHY PLL is not
configured (not prepared, rate not set). Therefore
assigned-clock-parents are not working here and driver is responsible
for reparenting clocks with proper procedure. These clocks are now
inputs to the DSI controller device.
Except that SM8750 DSI comes with several differences, new blocks and
changes in registers, making it incompatible with SM8650.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
.../bindings/display/msm/dsi-controller-main.yaml | 54 ++++++++++++++++++++--
1 file changed, 49 insertions(+), 5 deletions(-)
diff --git a/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml b/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml
index 2aab33cd0017cd4a0c915b7297bb3952e62561fa..8ecb2d8e296edf555df7380eac284b41a3f000a5 100644
--- a/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml
+++ b/Documentation/devicetree/bindings/display/msm/dsi-controller-main.yaml
@@ -40,6 +40,7 @@ properties:
- qcom,sm8450-dsi-ctrl
- qcom,sm8550-dsi-ctrl
- qcom,sm8650-dsi-ctrl
+ - qcom,sm8750-dsi-ctrl
- const: qcom,mdss-dsi-ctrl
- enum:
- qcom,dsi-ctrl-6g-qcm2290
@@ -68,11 +69,11 @@ properties:
- mnoc:: MNOC clock
- pixel:: Display pixel clock.
minItems: 3
- maxItems: 9
+ maxItems: 12
clock-names:
minItems: 3
- maxItems: 9
+ maxItems: 12
phys:
maxItems: 1
@@ -107,7 +108,8 @@ properties:
minItems: 2
maxItems: 4
description: |
- Parents of "byte" and "pixel" for the given platform.
+ For DSI on SM8650 and older: parents of "byte" and "pixel" for the given
+ platform.
For DSIv2 platforms this should contain "byte", "esc", "src" and
"pixel_src" clocks.
@@ -216,8 +218,6 @@ required:
- clocks
- clock-names
- phys
- - assigned-clocks
- - assigned-clock-parents
- ports
allOf:
@@ -242,6 +242,9 @@ allOf:
- const: byte
- const: pixel
- const: core
+ required:
+ - assigned-clocks
+ - assigned-clock-parents
- if:
properties:
@@ -264,6 +267,9 @@ allOf:
- const: byte
- const: pixel
- const: core
+ required:
+ - assigned-clocks
+ - assigned-clock-parents
- if:
properties:
@@ -286,6 +292,9 @@ allOf:
- const: pixel
- const: core
- const: core_mmss
+ required:
+ - assigned-clocks
+ - assigned-clock-parents
- if:
properties:
@@ -307,6 +316,9 @@ allOf:
- const: core_mmss
- const: pixel
- const: core
+ required:
+ - assigned-clocks
+ - assigned-clock-parents
- if:
properties:
@@ -342,6 +354,35 @@ allOf:
- const: core
- const: iface
- const: bus
+ required:
+ - assigned-clocks
+ - assigned-clock-parents
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - qcom,sm8750-dsi-ctrl
+ then:
+ properties:
+ clocks:
+ minItems: 12
+ maxItems: 12
+ clock-names:
+ items:
+ - const: byte
+ - const: byte_intf
+ - const: pixel
+ - const: core
+ - const: iface
+ - const: bus
+ - const: dsi_pll_pixel
+ - const: dsi_pll_byte
+ - const: esync
+ - const: osc
+ - const: byte_src
+ - const: pixel_src
- if:
properties:
@@ -365,6 +406,9 @@ allOf:
- const: core_mmss
- const: pixel
- const: core
+ required:
+ - assigned-clocks
+ - assigned-clock-parents
unevaluatedProperties: false
--
2.43.0
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