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

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Message-ID: <77b36608-4fca-48e4-beb1-c31cf4579b7b@linaro.org>
Date: Thu, 11 Jan 2024 18:00:24 +0100
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: Neil Armstrong <neil.armstrong@...aro.org>,
 Bjorn Andersson <andersson@...nel.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, Georgi Djakov <djakov@...nel.org>
Subject: Re: [PATCH 2/2] arm64: dts: qcom: sm8650-mtp: add gpio74 as reserved
 gpio



On 1/11/24 17:58, Neil Armstrong wrote:
> The TLMM gpio74 is also used to communicate with the secure NFC
> on-board module, some variants of the SM8650-MTP 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: 6fbdb3c1fac7 ("arm64: dts: qcom: sm8650: add initial SM8650 MTP dts")
> Reported-by: Georgi Djakov <djakov@...nel.org>
> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>

Konrad