linux-kernel - Re: [PATCH v2 4/6] arm64: dts: qcom: Add base SM4450 QRD DTS

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Message-ID: <f974f48a-05b0-530d-25a0-7ccf1b1ad113@linaro.org>
Date:   Thu, 27 Jul 2023 08:56:49 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Tengfei Fan <quic_tengfan@...cinc.com>, andersson@...nel.org,
        konrad.dybcio@...aro.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org
Cc:     quic_tsoni@...cinc.com, quic_shashim@...cinc.com,
        quic_kaushalk@...cinc.com, quic_tdas@...cinc.com,
        quic_tingweiz@...cinc.com, quic_aiquny@...cinc.com,
        kernel@...cinc.com, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 4/6] arm64: dts: qcom: Add base SM4450 QRD DTS

On 27/07/2023 04:35, Tengfei Fan wrote:
> Add DTS for Qualcomm QRD platform which uses SM4450 SoC.
> 
> Signed-off-by: Tengfei Fan <quic_tengfan@...cinc.com>
> ---
>  arch/arm64/boot/dts/qcom/Makefile       |  1 +
>  arch/arm64/boot/dts/qcom/sm4450-qrd.dts | 18 ++++++++++++++++++
>  2 files changed, 19 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/qcom/sm4450-qrd.dts
> 
> diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
> index 337abc4ceb17..db805d0929c8 100644
> --- a/arch/arm64/boot/dts/qcom/Makefile
> +++ b/arch/arm64/boot/dts/qcom/Makefile
> @@ -186,6 +186,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= sdm850-lenovo-yoga-c630.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= sdm850-samsung-w737.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= sdx75-idp.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= sm4250-oneplus-billie2.dtb
> +dtb-$(CONFIG_ARCH_QCOM)	+= sm4450-qrd.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= sm6115-fxtec-pro1x.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= sm6115p-lenovo-j606f.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= sm6125-sony-xperia-seine-pdx201.dtb
> diff --git a/arch/arm64/boot/dts/qcom/sm4450-qrd.dts b/arch/arm64/boot/dts/qcom/sm4450-qrd.dts
> new file mode 100644
> index 000000000000..04ad1dd4285a
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/sm4450-qrd.dts
> @@ -0,0 +1,18 @@
> +// SPDX-License-Identifier: BSD-3-Clause
> +/*
> + * Copyright (c) 2023, Qualcomm Innovation Center, Inc. All rights reserved.
> + */
> +
> +/dts-v1/;
> +
> +#include "sm4450.dtsi"
> +/ {
> +	model = "Qualcomm Technologies, Inc. SM4450 QRD";
> +	compatible = "qcom,sm4450-qrd", "qcom,sm4450";
> +
> +	aliases { };
> +
> +	chosen {
> +		bootargs = "console=hvc0 earlycon=hvc0 hvc_dcc.enable=1 cpuidle.off=1";

No earlycon, no hvc.enable (there is no such parameter), no cpuidle.off
(again don't add fake stuff). So the only suitable argument is console,
but this should be actually used via stdout path, although it seems
there is no device node for such usage?



Best regards,
Krzysztof