linux-kernel - [PATCH 1/2] dt-bindings: display/msm/dsi-phy: Add header with exposed clock IDs

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Message-ID: <20250127132105.107138-1-krzysztof.kozlowski@linaro.org>
Date: Mon, 27 Jan 2025 14:21:04 +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>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Bjorn Andersson <andersson@...nel.org>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Krishna Manikandan <quic_mkrishn@...cinc.com>,
	linux-arm-msm@...r.kernel.org,
	dri-devel@...ts.freedesktop.org,
	freedreno@...ts.freedesktop.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-clk@...r.kernel.org
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH 1/2] dt-bindings: display/msm/dsi-phy: Add header with exposed clock IDs

DSI phys, from earliest (28 nm) up to newest (3 nm) generation, provide
two clocks.  The respective clock ID is used by drivers and DTS, so it
should be documented as explicit ABI.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

---

Patch for Display tree, although with Ack from clock.
---
 .../devicetree/bindings/display/msm/dsi-phy-common.yaml  | 2 ++
 MAINTAINERS                                              | 1 +
 include/dt-bindings/clock/qcom,dsi-phy-28nm.h            | 9 +++++++++
 3 files changed, 12 insertions(+)
 create mode 100644 include/dt-bindings/clock/qcom,dsi-phy-28nm.h

diff --git a/Documentation/devicetree/bindings/display/msm/dsi-phy-common.yaml b/Documentation/devicetree/bindings/display/msm/dsi-phy-common.yaml
index 6b57ce41c95f..d0ce85a08b6d 100644
--- a/Documentation/devicetree/bindings/display/msm/dsi-phy-common.yaml
+++ b/Documentation/devicetree/bindings/display/msm/dsi-phy-common.yaml
@@ -15,6 +15,8 @@ description:
 properties:
   "#clock-cells":
     const: 1
+    description:
+      See include/dt-bindings/clock/qcom,dsi-phy-28nm.h for clock IDs.
 
   "#phy-cells":
     const: 0
diff --git a/MAINTAINERS b/MAINTAINERS
index eb75c95f6c45..30103e3918ea 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7398,6 +7398,7 @@ T:	git https://gitlab.freedesktop.org/drm/msm.git
 F:	Documentation/devicetree/bindings/display/msm/
 F:	drivers/gpu/drm/ci/xfails/msm*
 F:	drivers/gpu/drm/msm/
+F:	include/dt-bindings/clock/qcom,dsi-phy-28nm.h
 F:	include/uapi/drm/msm_drm.h
 
 DRM DRIVER FOR NOVATEK NT35510 PANELS
diff --git a/include/dt-bindings/clock/qcom,dsi-phy-28nm.h b/include/dt-bindings/clock/qcom,dsi-phy-28nm.h
new file mode 100644
index 000000000000..ab94d58377a1
--- /dev/null
+++ b/include/dt-bindings/clock/qcom,dsi-phy-28nm.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause */
+
+#ifndef _DT_BINDINGS_CLK_QCOM_DSI_PHY_28NM_H
+#define _DT_BINDINGS_CLK_QCOM_DSI_PHY_28NM_H
+
+#define DSI_BYTE_PLL_CLK		0
+#define DSI_PIXEL_PLL_CLK		1
+
+#endif
-- 
2.43.0