linux-kernel - [PATCH 3/3] arm64: dts: qcom: Split out SA8155P and use correct RPMh power domains

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230214095435.2192153-3-konrad.dybcio@linaro.org>
Date:   Tue, 14 Feb 2023 10:54:35 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     linux-arm-msm@...r.kernel.org, andersson@...nel.org,
        agross@...nel.org, krzysztof.kozlowski@...aro.org
Cc:     marijn.suijten@...ainline.org,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] arm64: dts: qcom: Split out SA8155P and use correct RPMh power domains

The RPMhPD setup on SA8155P is different compared to SM8150. Correct
it to ensure the platform will not try accessing forbidden/missing
RPMh entries at boot, as a bad vote will hang the machine.

Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
 arch/arm64/boot/dts/qcom/sa8155p-adp.dts |  2 +-
 arch/arm64/boot/dts/qcom/sa8155p.dtsi    | 51 ++++++++++++++++++++++++
 2 files changed, 52 insertions(+), 1 deletion(-)
 create mode 100644 arch/arm64/boot/dts/qcom/sa8155p.dtsi

diff --git a/arch/arm64/boot/dts/qcom/sa8155p-adp.dts b/arch/arm64/boot/dts/qcom/sa8155p-adp.dts
index 459384ec8f23..9454e8e4e517 100644
--- a/arch/arm64/boot/dts/qcom/sa8155p-adp.dts
+++ b/arch/arm64/boot/dts/qcom/sa8155p-adp.dts
@@ -7,7 +7,7 @@
 
 #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
 #include <dt-bindings/gpio/gpio.h>
-#include "sm8150.dtsi"
+#include "sa8155p.dtsi"
 #include "pmm8155au_1.dtsi"
 #include "pmm8155au_2.dtsi"
 
diff --git a/arch/arm64/boot/dts/qcom/sa8155p.dtsi b/arch/arm64/boot/dts/qcom/sa8155p.dtsi
new file mode 100644
index 000000000000..f2fd7c28764e
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/sa8155p.dtsi
@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright (c) 2023, Linaro Limited
+ *
+ * SA8155P is an automotive variant of SM8150, with some minor changes.
+ * Most notably, the RPMhPD setup differs: MMCX and LCX/LMX rails are gone.
+ */
+
+#include "sm8150.dtsi"
+
+&dispcc {
+	power-domains = <&rpmhpd SA8155P_CX>;
+};
+
+&mdss_mdp {
+	power-domains = <&rpmhpd SA8155P_CX>;
+};
+
+&mdss_dsi0 {
+	power-domains = <&rpmhpd SA8155P_CX>;
+};
+
+&mdss_dsi1 {
+	power-domains = <&rpmhpd SA8155P_CX>;
+};
+
+&remoteproc_adsp {
+	power-domains = <&rpmhpd SA8155P_CX>;
+};
+
+&remoteproc_cdsp {
+	power-domains = <&rpmhpd SA8155P_CX>;
+};
+
+&remoteproc_mpss {
+	power-domains = <&rpmhpd SA8155P_CX>,
+			<&rpmhpd SA8155P_MSS>;
+};
+
+&remoteproc_slpi {
+	power-domains = <&rpmhpd SA8155P_CX>,
+			<&rpmhpd SA8155P_MX>;
+};
+
+&rpmhpd {
+	compatible = "qcom,sa8155p-rpmhpd";
+};
+
+&sdhc_2 {
+	power-domains = <&rpmhpd SA8155P_CX>;
+};
-- 
2.39.1