linux-kernel - Re: [PATCH 5/6] arm64: dts: qcom: add initial support for QCS615 DTSI

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Message-ID: <10914199-1e86-4a2e-aec8-2a48cc49ef14@kernel.org>
Date: Wed, 28 Aug 2024 09:57:57 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Lijuan Gao <quic_lijuang@...cinc.com>
Cc: Thomas Gleixner <tglx@...utronix.de>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konradybcio@...nel.org>, kernel@...cinc.com,
 linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
 devicetree@...r.kernel.org
Subject: Re: [PATCH 5/6] arm64: dts: qcom: add initial support for QCS615 DTSI

On 28/08/2024 09:42, Lijuan Gao wrote:
> 
> 
> 在 8/28/2024 2:23 PM, Krzysztof Kozlowski 写道:
>> On Wed, Aug 28, 2024 at 10:02:15AM +0800, Lijuan Gao wrote:
>>> Add initial DTSI for QCS615 SoC. It includes base description
>>> of CPUs, interrupt-controller and cpu idle on Qualcomm QCS615
>>> platform.
>>>
>>> Signed-off-by: Lijuan Gao <quic_lijuang@...cinc.com>
>>> ---
>>>   arch/arm64/boot/dts/qcom/qcs615.dtsi | 449 +++++++++++++++++++++++++++++++++++
>>>   1 file changed, 449 insertions(+)
>>>
>>> diff --git a/arch/arm64/boot/dts/qcom/qcs615.dtsi b/arch/arm64/boot/dts/qcom/qcs615.dtsi
>>> new file mode 100644
>>> index 000000000000..cf7aaa7f6131
>>> --- /dev/null
>>> +++ b/arch/arm64/boot/dts/qcom/qcs615.dtsi
>>> @@ -0,0 +1,449 @@
>>> +// SPDX-License-Identifier: BSD-3-Clause
>>> +/*
>>> + * Copyright (c) 2024, Qualcomm Innovation Center, Inc. All rights reserved.
>>> + */
>>> +
>>> +#include <dt-bindings/interrupt-controller/arm-gic.h>
>>> +
>>> +/ {
>>> +	interrupt-parent = <&intc>;
>>> +
>>
>> No need for blank line.
> Well noted. Will update in the next patch.
>>
>>> +	#address-cells = <2>;
>>> +	#size-cells = <2>;
>>> +
>>> +	chosen { };
>>
>> Drop, redundant.
> Well noted. Will update in the next patch.
>>
>>> +
>>> +	clocks {
>>> +		xo_board: xo-board {
>>
>> xo-clk? xo-board-clk?
>>
>> But if board, this does not sound like part of SoC. See other files how
>> they do it.
>>
> Other files also added ‘xo_board’. The ‘xo_board’ is the clock that will 

No. Don't use 10yo code as example.

> be used by other SoC nodes, such as rpmhcc. Currently, the node can be 
> deleted as no one is using it.

I don't think you understood the problem. This is not the property of
SoC. We talked about this many times. DTS coding style has even explicit
guideline for this. Your own go/upstream (which is quite well written
and complete) probably as well. Did you check it? If there is no such,
extend it.


Best regards,
Krzysztof