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Message-ID: <7079629a-0226-4bf8-87b9-721bb46439b2@quicinc.com>
Date: Thu, 11 Jan 2024 20:39:55 +0200
From: Georgi Djakov <quic_c_gdjako@...cinc.com>
To: Neil Armstrong <neil.armstrong@...aro.org>,
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>, Georgi Djakov <djakov@...nel.org>
Subject: Re: [PATCH 2/2] arm64: dts: qcom: sm8650-mtp: add gpio74 as reserved
gpio
On 1/11/2024 6:58 PM, 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>
The SM8650-MTP board boots successfully with this patch. Thanks Neil!
Tested-by: Georgi Djakov <quic_c_gdjako@...cinc.com>
> ---
> arch/arm64/boot/dts/qcom/sm8650-mtp.dts | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/qcom/sm8650-mtp.dts b/arch/arm64/boot/dts/qcom/sm8650-mtp.dts
> index 9d916edb1c73..be133a3d5cbe 100644
> --- a/arch/arm64/boot/dts/qcom/sm8650-mtp.dts
> +++ b/arch/arm64/boot/dts/qcom/sm8650-mtp.dts
> @@ -622,7 +622,7 @@ right_spkr: speaker@0,1 {
>
> &tlmm {
> /* Reserved I/Os for NFC */
> - gpio-reserved-ranges = <32 8>;
> + gpio-reserved-ranges = <32 8>, <74 1>;
>
> disp0_reset_n_active: disp0-reset-n-active-state {
> pins = "gpio133";
>
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