linux-kernel - [PATCH 2/2] arm64: dts: qcom: sm8550: Use the correct LLCC register scheme

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Message-Id: <20230517-topic-kailua-llcc-v1-2-d57bd860c43e@linaro.org>
Date:   Wed, 17 May 2023 04:18:50 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Manivannan Sadhasivam <mani@...nel.org>,
        "Borislav Petkov (AMD)" <bp@...en8.de>
Cc:     Marijn Suijten <marijn.suijten@...ainline.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Konrad Dybcio <konrad.dybcio@...aro.org>
Subject: [PATCH 2/2] arm64: dts: qcom: sm8550: Use the correct LLCC
 register scheme

During the ABI-breaking (for good reasons) conversion of the LLCC
register description, SM8550 was not taken into account, resulting
in LLCC being broken on any kernel containing the patch referenced
in the fixes tag.

Fix it by describing the regions properly.

Fixes: ee13b5008707 ("qcom: llcc/edac: Fix the base address used for accessing LLCC banks")
Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
 arch/arm64/boot/dts/qcom/sm8550.dtsi | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sm8550.dtsi b/arch/arm64/boot/dts/qcom/sm8550.dtsi
index 6e9bad8f6f33..70ae7e2e900a 100644
--- a/arch/arm64/boot/dts/qcom/sm8550.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8550.dtsi
@@ -3762,9 +3762,16 @@ gem_noc: interconnect@...00000 {
 
 		system-cache-controller@...00000 {
 			compatible = "qcom,sm8550-llcc";
-			reg = <0 0x25000000 0 0x800000>,
+			reg = <0 0x25000000 0 0x200000>,
+			      <0 0x25200000 0 0x200000>,
+			      <0 0x25400000 0 0x200000>,
+			      <0 0x25600000 0 0x200000>,
 			      <0 0x25800000 0 0x200000>;
-			reg-names = "llcc_base", "llcc_broadcast_base";
+			reg-names = "llcc0_base",
+				    "llcc1_base",
+				    "llcc2_base",
+				    "llcc3_base",
+				    "llcc_broadcast_base";
 			interrupts = <GIC_SPI 266 IRQ_TYPE_LEVEL_HIGH>;
 		};
 

-- 
2.40.1