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Message-Id: <20250109-b4-sm8750-display-v1-4-b3f15faf4c97@linaro.org>
Date: Thu, 09 Jan 2025 14:08:31 +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 RFC 04/11] 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 c99dd06f2db9a7a77665ab057d05d87fd3ec2ec2..475b3b881c51c0bc526aed54955767a7149fb1d5 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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