linux-kernel - [PATCH v5 1/4] arm64: dts: qcom: sc7180: Don't enable lpass clocks by default

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Message-Id: <20230407151423.59993-2-nikita@trvn.ru>
Date:   Fri,  7 Apr 2023 20:14:20 +0500
From:   Nikita Travkin <nikita@...n.ru>
To:     agross@...nel.org, andersson@...nel.org
Cc:     robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        konrad.dybcio@...aro.org, quic_srivasam@...cinc.com,
        judyhsiao@...omium.org, mka@...omium.org, dianders@...omium.org,
        cros-qcom-dts-watchers@...omium.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        ~postmarketos/upstreaming@...ts.sr.ht,
        Nikita Travkin <nikita@...n.ru>
Subject: [PATCH v5 1/4] arm64: dts: qcom: sc7180: Don't enable lpass clocks by default

lpass clocks are usually blocked from HLOS by the firmware and
instead are managed by the ADSP. Mark them as reserved and explicitly
enable in the CrOS boards that have special, cooperative firmware.

Signed-off-by: Nikita Travkin <nikita@...n.ru>
Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
v5: minor style changes (Konrad)
---
 arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi | 8 ++++++++
 arch/arm64/boot/dts/qcom/sc7180.dtsi         | 4 ++++
 2 files changed, 12 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
index 423630c4d02c..7e57899ef2c6 100644
--- a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
@@ -785,6 +785,10 @@ alc5682: codec@1a {
 	};
 };
 
+&lpasscc {
+	status = "okay";
+};
+
 &lpass_cpu {
 	status = "okay";
 
@@ -810,6 +814,10 @@ dai-link@5 {
 	};
 };
 
+&lpass_hm {
+	status = "okay";
+};
+
 &mdp {
 	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
index 3c799b564b64..6f40301faa1c 100644
--- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
@@ -3621,6 +3621,8 @@ lpasscc: clock-controller@...00000 {
 			power-domains = <&lpass_hm LPASS_CORE_HM_GDSCR>;
 			#clock-cells = <1>;
 			#power-domain-cells = <1>;
+
+			status = "reserved"; /* Controlled by ADSP */
 		};
 
 		lpass_cpu: lpass@...87000 {
@@ -3669,6 +3671,8 @@ lpass_hm: clock-controller@...00000 {
 
 			#clock-cells = <1>;
 			#power-domain-cells = <1>;
+
+			status = "reserved"; /* Controlled by ADSP */
 		};
 	};
 
-- 
2.39.2