Thread (1 message) 1 message, 1 author, 2020-02-14
STALE2355d REVIEWED: 1 (0M)

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[PATCH AUTOSEL 5.5 297/542] arm64: dts: qcom: msm8998-mtp: Add alias for blsp1_uart3

From: Sasha Levin <sashal@kernel.org>
Date: 2020-02-14 15:55:35
Also in: linux-arm-msm, lkml, stable
Subsystem: arm/qualcomm mailing list, arm/qualcomm support, the rest · Maintainers: Bjorn Andersson, Konrad Dybcio, Linus Torvalds

From: Bjorn Andersson <redacted>

[ Upstream commit c9ec155b5962233aff3df65210bd6a4788dee21c ]

The msm_serial driver has a predefined set of uart ports defined, which
is allocated either by reading aliases or if no match is found a simple
counter, starting at index 0. But there's no logic in place to prevent
these two allocation mechanism from colliding. As a result either none
or all of the active msm_serial instances must be listed as aliases.

Define blsp1_uart3 as "serial1" to mitigate this problem.

Fixes: 4cffb9f2c700 ("arm64: dts: qcom: msm8998-mtp: Enable bluetooth")
Signed-off-by: Bjorn Andersson <redacted>
Reviewed-by: Jeffrey Hugo <redacted>
Link: https://lore.kernel.org/r/20191119011823.379100-1-bjorn.andersson@linaro.org (local)
Signed-off-by: Bjorn Andersson <redacted>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/qcom/msm8998-mtp.dtsi | 1 +
 1 file changed, 1 insertion(+)
diff --git a/arch/arm64/boot/dts/qcom/msm8998-mtp.dtsi b/arch/arm64/boot/dts/qcom/msm8998-mtp.dtsi
index 5f101a20a20a2..e08fcb426bbf8 100644
--- a/arch/arm64/boot/dts/qcom/msm8998-mtp.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8998-mtp.dtsi
@@ -9,6 +9,7 @@
 / {
 	aliases {
 		serial0 = &blsp2_uart1;
+		serial1 = &blsp1_uart3;
 	};
 
 	chosen {
-- 
2.20.1
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