linux-kernel - Re: [PATCH 2/4] arm64: dts: qcom: sc7280-crd: Add device tree files for CRD

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Date:   Wed, 24 Nov 2021 17:18:12 +0530
From:   Rajendra Nayak <rnayak@...eaurora.org>
To:     Matthias Kaehlcke <mka@...omium.org>
Cc:     agross@...nel.org, bjorn.andersson@...aro.org, robh+dt@...nel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, sboyd@...eaurora.org,
        dianders@...omium.org, kgodara@...eaurora.org
Subject: Re: [PATCH 2/4] arm64: dts: qcom: sc7280-crd: Add device tree files
 for CRD



On 11/23/2021 9:44 PM, Matthias Kaehlcke wrote:
> On Tue, Nov 23, 2021 at 12:30:11PM +0530, Rajendra Nayak wrote:
>> CRD (Compute Reference Design) is a sc7280 based board, largely
>> derived from the existing IDP board design with some key deltas
>> 1. has EC and H1 over SPI similar to IDP2
>> 2. touchscreen and trackpad support
>> 3. eDP display
>>
>> We just add the barebones dts file here, subsequent patches will
>> add support for EC/H1 and other components.
>>
>> Signed-off-by: Rajendra Nayak <rnayak@...eaurora.org>
>> ---
>>   arch/arm64/boot/dts/qcom/Makefile       |  1 +
>>   arch/arm64/boot/dts/qcom/sc7280-crd.dts | 31 +++++++++++++++++++++++++++++++
>>   2 files changed, 32 insertions(+)
>>   create mode 100644 arch/arm64/boot/dts/qcom/sc7280-crd.dts
>>
>> diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
>> index 6b816eb..b18708c 100644
>> --- a/arch/arm64/boot/dts/qcom/Makefile
>> +++ b/arch/arm64/boot/dts/qcom/Makefile
>> @@ -78,6 +78,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= sc7180-trogdor-r1-lte.dtb
>>   dtb-$(CONFIG_ARCH_QCOM)	+= sc7280-herobrine.dtb
>>   dtb-$(CONFIG_ARCH_QCOM)	+= sc7280-idp.dtb
>>   dtb-$(CONFIG_ARCH_QCOM)	+= sc7280-idp2.dtb
>> +dtb-$(CONFIG_ARCH_QCOM)	+= sc7280-crd.dtb
>>   dtb-$(CONFIG_ARCH_QCOM)	+= sdm630-sony-xperia-ganges-kirin.dtb
>>   dtb-$(CONFIG_ARCH_QCOM)	+= sdm630-sony-xperia-nile-discovery.dtb
>>   dtb-$(CONFIG_ARCH_QCOM)	+= sdm630-sony-xperia-nile-pioneer.dtb
>> diff --git a/arch/arm64/boot/dts/qcom/sc7280-crd.dts b/arch/arm64/boot/dts/qcom/sc7280-crd.dts
>> new file mode 100644
>> index 0000000..09d02c2
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/qcom/sc7280-crd.dts
>> @@ -0,0 +1,31 @@
>> +// SPDX-License-Identifier: BSD-3-Clause
>> +/*
>> + * sc7280 CRD board device tree source
>> + *
>> + * Copyright (c) 2021, The Linux Foundation. All rights reserved.
>> + */
>> +
>> +/dts-v1/;
>> +
>> +#include "sc7280-idp.dtsi"
>> +
>> +/ {
>> +	model = "Qualcomm Technologies, Inc. sc7280 CRD platform";
>> +	compatible = "qcom,sc7280-crd", "google,hoglin-rev0", "qcom,sc7280";
> 
> As per my comment on the binding there should also be a "google,hoglin"
> without a revision suffix, also it seems there are already CRDs with higher
> rev numbers.

right i will remove the -revs for now.

> 
>> +
>> +	aliases {
>> +		serial0 = &uart5;
>> +	};
>> +
>> +	chosen {
>> +		stdout-path = "serial0:115200n8";
>> +	};
>> +};
>> +
>> +&nvme_pwren {
>> +	pins = "gpio51";
>> +};
>> +
>> +&nvme_3v3_regulator {
>> +	gpio = <&tlmm 51 GPIO_ACTIVE_HIGH>;
>> +};
> 
> uber-nit: 'nvme_3v3_regulator' should be before 'nvme_pwren', assuming
> alphabetical/ASCII ordering is used.

thanks will fix
> 

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