linux-kernel - [PATCH 1/2] arm64: dts: qcom: sm8650-qrd: add gpio74 as reserved gpio

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Message-Id: <20240111-topic-sm8650-upstream-qrd-fix-gpio-reserved-v1-1-fad39b4c5def@linaro.org>
Date: Thu, 11 Jan 2024 17:58:49 +0100
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konrad.dybcio@...aro.org>, Rob Herring <robh+dt@...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, Neil Armstrong <neil.armstrong@...aro.org>, 
 Georgi Djakov <djakov@...nel.org>
Subject: [PATCH 1/2] arm64: dts: qcom: sm8650-qrd: add gpio74 as reserved
 gpio

The TLMM gpio74 is also used to communicate with the secure NFC
on-board module, some variants of the SM8650-QRD board requires
this GPIO to be dedicated to the secure firmware and set reserved
in order to successfully initialize the TLMM GPIOs from HLOS (Linux).
On the other boards this GPIO is unused so it's still safe to mark
the GPIO as reserved.

Fixes: a834911d50c1 ("arm64: dts: qcom: sm8650: add initial SM8650 QRD dts")
Reported-by: Georgi Djakov <djakov@...nel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
---
 arch/arm64/boot/dts/qcom/sm8650-qrd.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/sm8650-qrd.dts b/arch/arm64/boot/dts/qcom/sm8650-qrd.dts
index 592a67a47c78..b9151c2ddf2e 100644
--- a/arch/arm64/boot/dts/qcom/sm8650-qrd.dts
+++ b/arch/arm64/boot/dts/qcom/sm8650-qrd.dts
@@ -659,7 +659,7 @@ touchscreen@0 {
 
 &tlmm {
 	/* Reserved I/Os for NFC */
-	gpio-reserved-ranges = <32 8>;
+	gpio-reserved-ranges = <32 8>, <74 1>;
 
 	bt_default: bt-default-state {
 		bt-en-pins {

-- 
2.34.1