linux-kernel - [PATCH v2 1/2] arm64: dts: qcom: sm8550: Fix SPMI channels size

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Message-Id: <20240221-dts-qcom-sm8550-fix-spmi-chnls-size-v2-1-72b5efd9dc4f@linaro.org>
Date: Wed, 21 Feb 2024 15:04:25 +0200
From: Abel Vesa <abel.vesa@...aro.org>
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: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Abel Vesa <abel.vesa@...aro.org>, 
 Neil Armstrong <neil.armstrong@...aro.org>
Subject: [PATCH v2 1/2] arm64: dts: qcom: sm8550: Fix SPMI channels size

The actual size of the channels registers region is 4MB, according to the
documentation. This issue was not caught until now because the driver was
supposed to allow same regions being mapped multiple times for supporting
multiple buses. Thie driver is using platform_get_resource_byname() and
devm_ioremap() towards that purpose, which intentionally avoids
devm_request_mem_region() altogether.

Fixes: ffc50b2d3828 ("arm64: dts: qcom: Add base SM8550 dtsi")
Reviewed-by: Neil Armstrong <neil.armstrong@...aro.org>
Signed-off-by: Abel Vesa <abel.vesa@...aro.org>
---
 arch/arm64/boot/dts/qcom/sm8550.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/sm8550.dtsi b/arch/arm64/boot/dts/qcom/sm8550.dtsi
index 7474cddf7ad3..3904348075f6 100644
--- a/arch/arm64/boot/dts/qcom/sm8550.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8550.dtsi
@@ -3318,7 +3318,7 @@ sram@...0000 {
 		spmi_bus: spmi@...0000 {
 			compatible = "qcom,spmi-pmic-arb";
 			reg = <0 0x0c400000 0 0x3000>,
-			      <0 0x0c500000 0 0x4000000>,
+			      <0 0x0c500000 0 0x400000>,
 			      <0 0x0c440000 0 0x80000>,
 			      <0 0x0c4c0000 0 0x20000>,
 			      <0 0x0c42d000 0 0x4000>;

-- 
2.34.1