linux-kernel - [PATCH v6 3/5] arm64: dts: qcom: sm8450: Add Broadcast

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Message-Id: <bfc817da4188abdf5b543bedafb9cb0eb82806c2.1717014052.git.quic_uchalich@quicinc.com>
Date: Fri, 31 May 2024 09:45:26 -0700
From: Unnathi Chalicheemala <quic_uchalich@...cinc.com>
To: Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc: Unnathi Chalicheemala <quic_uchalich@...cinc.com>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel@...cinc.com
Subject: [PATCH v6 3/5] arm64: dts: qcom: sm8450: Add Broadcast_AND register in LLCC block

Chipsets before SM8450 have only one broadcast register (Broadcast_OR)
which is used to broadcast writes and check for status bit 0 only in
all channels.
>From SM8450 onwards, a new Broadcast_AND region was added which checks
for status bit 1. This hasn't been updated and Broadcast_OR region
was wrongly being used to check for status bit 1 all along.
Hence mapping Broadcast_AND region's address space to LLCC in SM8450.

Signed-off-by: Unnathi Chalicheemala <quic_uchalich@...cinc.com>
---
 arch/arm64/boot/dts/qcom/sm8450.dtsi | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sm8450.dtsi b/arch/arm64/boot/dts/qcom/sm8450.dtsi
index 616461fcbab9..f947cacc81b3 100644
--- a/arch/arm64/boot/dts/qcom/sm8450.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8450.dtsi
@@ -4362,9 +4362,10 @@ system-cache-controller@...00000 {
 			compatible = "qcom,sm8450-llcc";
 			reg = <0 0x19200000 0 0x80000>, <0 0x19600000 0 0x80000>,
 			      <0 0x19300000 0 0x80000>, <0 0x19700000 0 0x80000>,
-			      <0 0x19a00000 0 0x80000>;
+			      <0 0x19a00000 0 0x80000>, <0 0x19c00000 0 0x80000>;
 			reg-names = "llcc0_base", "llcc1_base", "llcc2_base",
-				    "llcc3_base", "llcc_broadcast_base";
+				    "llcc3_base", "llcc_broadcast_base",
+				    "llcc_broadcast_and_base";
 			interrupts = <GIC_SPI 266 IRQ_TYPE_LEVEL_HIGH>;
 		};
 
-- 
2.34.1