linux-kernel - [PATCH v3] arm64: dts: qcom: sdm845: Introduce camera master clock pinctrl

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Message-Id: <20260114-sdm845-mclk-v3-1-c9351deaf4f2@ixit.cz>
Date: Wed, 14 Jan 2026 11:08:45 +0100
From: David Heidelberg via B4 Relay <devnull+david.ixit.cz@...nel.org>
To: Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, phone-devel@...r.kernel.org, 
 Konrad Dybcio <konrad.dybcio@....qualcomm.com>, 
 David Heidelberg <david@...t.cz>
Subject: [PATCH v3] arm64: dts: qcom: sdm845: Introduce camera master clock
 pinctrl

From: David Heidelberg <david@...t.cz>

Put clock pins configuration for camera master clock into the dtsi.

Reviewed-by: Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Signed-off-by: David Heidelberg <david@...t.cz>
---
Inspired by Richard's patch set for SDM670, I noticed that SDM845
follows the same pattern. This change prepares for enabling
additional cameras.

These pinctrl settings have been verified against the downstream
SDM845 kernel.

Since most of these are not yet used in mainline, testing was done
on sdm845-next using OnePlus 6 cameras with downstream drivers.

Thank you
David
---
Changes in v3:
- Dropped 2nd patch
  ("arm64: dts: qcom: sdm845-db845c: Use pad fn instead of defining own")
  as there is no documentation or people who can answer questions for
  now, so we can move forward with the main camera work.
- Link to v2: https://lore.kernel.org/r/20251217-sdm845-mclk-v2-0-7028c2d09145@ixit.cz

Changes in v2:
- Added mclk3. (Vladimir)
- Reword commit messages.
- Corrected commit msg name. (Konrad)
- Link to v1: https://lore.kernel.org/r/20251213-sdm845-mclk-v1-0-197bc947d4c6@ixit.cz
---
 arch/arm64/boot/dts/qcom/sdm845.dtsi | 56 ++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
index bf2f9c04adba7..c0f21a745fb0c 100644
--- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
@@ -2805,6 +2805,62 @@ tlmm: pinctrl@...0000 {
 			gpio-ranges = <&tlmm 0 0 151>;
 			wakeup-parent = <&pdc_intc>;
 
+			cam_mclk0_default: cam-mclk0-default-state {
+				pins = "gpio13";
+				function = "cam_mclk";
+				drive-strength = <2>;
+				bias-disable;
+			};
+
+			cam_mclk0_sleep: cam-mclk0-sleep-state {
+				pins = "gpio13";
+				function = "cam_mclk";
+				drive-strength = <2>;
+				bias-pull-down;
+			};
+
+			cam_mclk1_default: cam-mclk1-default-state {
+				pins = "gpio14";
+				function = "cam_mclk";
+				drive-strength = <2>;
+				bias-disable;
+			};
+
+			cam_mclk1_sleep: cam-mclk1-sleep-state {
+				pins = "gpio14";
+				function = "cam_mclk";
+				drive-strength = <2>;
+				bias-pull-down;
+			};
+
+			cam_mclk2_default: cam-mclk2-default-state {
+				pins = "gpio15";
+				function = "cam_mclk";
+				drive-strength = <2>;
+				bias-disable;
+			};
+
+			cam_mclk2_sleep: cam-mclk2-sleep-state {
+				pins = "gpio15";
+				function = "cam_mclk";
+				drive-strength = <2>;
+				bias-pull-down;
+			};
+
+			cam_mclk3_default: cam-mclk3-default-state {
+				pins = "gpio16";
+				function = "cam_mclk";
+				drive-strength = <2>;
+				bias-disable;
+			};
+
+			cam_mclk3_sleep: cam-mclk3-sleep-state {
+				pins = "gpio16";
+				function = "cam_mclk";
+				drive-strength = <2>;
+				bias-pull-down;
+			};
+
 			cci0_default: cci0-default-state {
 				/* SDA, SCL */
 				pins = "gpio17", "gpio18";

---
base-commit: 0f853ca2a798ead9d24d39cad99b0966815c582a
change-id: 20251213-sdm845-mclk-041f2a952e31

Best regards,
-- 
David Heidelberg <david@...t.cz>