linux-kernel - Re: [PATCH RESEND v3 1/2] soc: hisilicon: Support HCCS driver on Kunpeng SoC

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Date:   Wed, 26 Jul 2023 17:48:10 +0800
From:   "lihuisong (C)" <lihuisong@...wei.com>
To:     Randy Dunlap <rdunlap@...radead.org>, <xuwei5@...ilicon.com>,
        <arnd@...db.de>, <krzk@...nel.org>, <sudeep.holla@....com>
CC:     <linux-kernel@...r.kernel.org>, <soc@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <wanghuiqiang@...wei.com>,
        <tanxiaofei@...wei.com>, <liuyonglong@...wei.com>,
        <lihuisong@...wei.com>
Subject: Re: [PATCH RESEND v3 1/2] soc: hisilicon: Support HCCS driver on
 Kunpeng SoC

Hi Randy Dunlap,

many thanks for reviewing my patch.


在 2023/7/25 23:28, Randy Dunlap 写道:
> Hi--
>
> On 7/25/23 00:57, Huisong Li wrote:
>> diff --git a/drivers/soc/hisilicon/Kconfig b/drivers/soc/hisilicon/Kconfig
>> new file mode 100644
>> index 000000000000..87a1f15cbedb
>> --- /dev/null
>> +++ b/drivers/soc/hisilicon/Kconfig
>> @@ -0,0 +1,19 @@
>> +# SPDX-License-Identifier: GPL-2.0-only
>> +
>> +menu "Hisilicon SoC drivers"
>> +	depends on ARCH_HISI || COMPILE_TEST
>> +
>> +config KUNPENG_HCCS
>> +	tristate "HCCS driver on Kunpeng SoC"
>> +	depends on ACPI
>> +	depends on ARM64 || COMPILE_TEST
>> +	help
>> +	  The Huawei Cache-Coherent System (HCCS) is a bus protocol standard
> Just curious: what makes it a standard?
HCCS is just a self-defined bus protocol and used for multi-chip 
interconnection.
The description above doesn't seem appropriate.
I will fix these releated description in next version.
>
>> +	  for ensuring cache coherent on HiSilicon SoC. The performance of
> 	                     coherence
Ack, thanks.
>
>> +	  the application may be affected if some hccs ports are in non-full
> 	                                          HCCS
HCCS is a bus protocol, it should be all capitals.
And hccs port is an abstraction object in code layer here.
So maybe it is ok here. what do you think?

Best regards,
Huisong