linux-kernel - Re: [PATCH v13 1/2] dt-bindings: clock: add loongson-2 boot clock index

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Date:   Wed, 8 Mar 2023 17:24:26 +0800
From:   zhuyinbo <zhuyinbo@...ngson.cn>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, zhuyinbo@...ngson.cn,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org
Cc:     Jianmin Lv <lvjianmin@...ngson.cn>,
        Liu Peibao <liupeibao@...ngson.cn>, wanghongliang@...ngson.cn,
        loongson-kernel@...ts.loongnix.cn
Subject: Re: [PATCH v13 1/2] dt-bindings: clock: add loongson-2 boot clock
 index


在 2023/3/8 下午4:37, Krzysztof Kozlowski 写道:
> On 08/03/2023 02:35, zhuyinbo wrote:
>> 在 2023/3/7 下午8:47, Krzysztof Kozlowski 写道:
>>> On 07/03/2023 12:50, Yinbo Zhu wrote:
>>>> The Loongson-2 boot clock was used to spi and lio peripheral and
>>>> this patch was to add boot clock index number.
>>>>
>>>> Signed-off-by: Yinbo Zhu <zhuyinbo@...ngson.cn>
>>>> ---
>>> This is v13? Where is the changelog then?
>> in fact, this is a new patch(v1),   but another clock driver patch in
>> this series had send as v13 and need depend on
>>
>> this patch so set current patch as v13.
> This should be explained in changelog.

okay I got it , and I whether need resend a v14 patch that in order to  
add this explain in changelog ?

>
>>>
>>>>    include/dt-bindings/clock/loongson,ls2k-clk.h | 25 ++++++++++---------
>>>>    1 file changed, 13 insertions(+), 12 deletions(-)
>>>>
>>>> diff --git a/include/dt-bindings/clock/loongson,ls2k-clk.h b/include/dt-bindings/clock/loongson,ls2k-clk.h
>>>> index db1e27e792ff1..e86804365e506 100644
>>>> --- a/include/dt-bindings/clock/loongson,ls2k-clk.h
>>>> +++ b/include/dt-bindings/clock/loongson,ls2k-clk.h
>>>> @@ -13,17 +13,18 @@
>>>>    #define LOONGSON2_DC_PLL				3
>>>>    #define LOONGSON2_PIX0_PLL				4
>>>>    #define LOONGSON2_PIX1_PLL				5
>>>> -#define LOONGSON2_NODE_CLK				6
>>>> -#define LOONGSON2_HDA_CLK				7
>>>> -#define LOONGSON2_GPU_CLK				8
>>>> -#define LOONGSON2_DDR_CLK				9
>>>> -#define LOONGSON2_GMAC_CLK				10
>>>> -#define LOONGSON2_DC_CLK				11
>>>> -#define LOONGSON2_APB_CLK				12
>>>> -#define LOONGSON2_USB_CLK				13
>>>> -#define LOONGSON2_SATA_CLK				14
>>>> -#define LOONGSON2_PIX0_CLK				15
>>>> -#define LOONGSON2_PIX1_CLK				16
>>>> -#define LOONGSON2_CLK_END				17
>>>> +#define LOONGSON2_BOOT_CLK				6
>>> That's an ABI break and commit msg does not explain it.
>> you meaning is that need add a explanation in commit msg that why
> You need good explanation to break the ABI. I don't understand the
> commit msg, but anyway I could not find there justification for ABI
> break. If you do not have good justification, don't break the ABI,

The commit msg is the patch commit  log,  and I maybe not got it about 
break the ABI.  You said about "break the ABI"

is whether is location issue about "LOONGSON2_BOOT_CLK"?   if yes,   the 
LOONGSON2_BOOT_CLK was placed

after LOONGSON2_PIX1_PLL that is due to their clock parent is same.     
and I whether need add this explanation

in patch commit log description?

>
>
>
> Best regards,
> Krzysztof