linux-kernel - Re: [PATCH v4 3/3] arm64: dts: qcom: introduce sa8540p-ride dts

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Message-ID: <Yyq0dFvCI54QMqAl@hovoldconsulting.com>
Date:   Wed, 21 Sep 2022 08:51:32 +0200
From:   Johan Hovold <johan@...nel.org>
To:     Parikshit Pareek <quic_ppareek@...cinc.com>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Andrew Halaney <ahalaney@...hat.com>,
        Shazad Hussain <quic_shazhuss@...cinc.com>
Subject: Re: [PATCH v4 3/3] arm64: dts: qcom: introduce sa8540p-ride dts

On Tue, Sep 20, 2022 at 05:38:02PM +0530, Parikshit Pareek wrote:
> Create new dts file specific for Qdrive board based on sa8540p chipset.
> Introduce common dtsi file sa8295p-adp.dtsi, to be included for adp and
> Qdrive board.
> 
> This is quite similar to sa8295 ADP development board. Main differences
> are related to connectors, and interface cards, like USB external ports,
> ethernet-switch, and PCIe switch etc.
> 
> Signed-off-by: Parikshit Pareek <quic_ppareek@...cinc.com>
> Reported-by: Shazad Hussain <quic_shazhuss@...cinc.com>
> ---

> diff --git a/arch/arm64/boot/dts/qcom/sa8540p-adp-ride.dts b/arch/arm64/boot/dts/qcom/sa8540p-adp-ride.dts
> new file mode 100644
> index 000000000000..bd79866b80e1
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/sa8540p-adp-ride.dts
> @@ -0,0 +1,31 @@
> +// SPDX-License-Identifier: BSD-3-Clause
> +/*
> + * Copyright (c) 2021, The Linux Foundation. All rights reserved.
> + * Copyright (c) 2022, Linaro Limited
> + * Copyright (c) 2022, Qualcomm Innovation Center, Inc. All rights reserved.
> + */
> +
> +/dts-v1/;
> +
> +#include "sa8540p-adp.dtsi"
> +
> +/ {
> +	model = "Qualcomm SA8540 ADP";
> +	compatible = "qcom,sa8540p-adp-ride", "qcom,sa8540p";
> +};
> +
> +&ufs_card_hc {
> +	status = "disabled";
> +};

What about the UFS phy, etc?

This opt-out scheme seems quite fragile.

> +&usb_1 {
> +	status = "disabled";
> +};
> +
> +&usb_1_hsphy {
> +	status = "disabled";
> +};
> +
> +&usb_1_qmpphy {
> +	status = "disabled";
> +};

Johan