[PATCH 6.1 1167/1191] arm64: dts: qcom: sm8550: Fix SPMI channels size

From
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date
2026-09-12 16:57:38
Also in
linux-patches
Reply to
Greg Kroah-Hartman, 2026-09-12
6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Abel Vesa <redacted>

[ Upstream commit 77dd1e50ffcba33c3195ae4fc78f354368ddacb2 ]

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@linaro.org>
Signed-off-by: Abel Vesa <redacted>
Reviewed-by: Konrad Dybcio <redacted>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8550-QRD
Link: https://lore.kernel.org/r/20240221-dts-qcom-sm8550-fix-spmi-chnls-size-v2-1-72b5efd9dc4f@linaro.org (local)
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.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 c09458cc4de94..a36e85c48a07f 100644
--- a/arch/arm64/boot/dts/qcom/sm8550.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8550.dtsi
@@ -1823,7 +1823,7 @@ sram@c3f0000 {
 		spmi_bus: spmi@c400000 {
 			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>;
-- 
2.53.0


Thread (1,211 messages) 1,211 messages, 13 authors, last reply 2026-09-21
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