linux-kernel - [PATCH AUTOSEL 5.5 297/542] arm64: dts: qcom: msm8998-mtp: Add alias for blsp1

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Date:   Fri, 14 Feb 2020 10:44:49 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Jeffrey Hugo <jeffrey.l.hugo@...il.com>,
        Sasha Levin <sashal@...nel.org>, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: [PATCH AUTOSEL 5.5 297/542] arm64: dts: qcom: msm8998-mtp: Add alias for blsp1_uart3

From: Bjorn Andersson <bjorn.andersson@...aro.org>

[ 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 <bjorn.andersson@...aro.org>
Reviewed-by: Jeffrey Hugo <jeffrey.l.hugo@...il.com>
Link: https://lore.kernel.org/r/20191119011823.379100-1-bjorn.andersson@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
Signed-off-by: Sasha Levin <sashal@...nel.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