linux-kernel - Re: [PATCH] MIPS: cevt-r4k: Enable intimer for Loongson64 CPUs with extimer

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Message-ID: <CA420A99-C226-4A22-B3A6-4464DD8CFA1D@flygoat.com>
Date:   Sat, 03 Oct 2020 14:25:42 +0800
From:   Jiaxun Yang <jiaxun.yang@...goat.com>
To:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>
CC:     linux-mips@...r.kernel.org, Huacai Chen <chenhc@...ote.com>,
        Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        WANG Xuerui <git@...0n.name>,
        Paul Burton <paulburton@...nel.org>,
        周琰杰 (Zhou Yanjie) 
        <zhouyanjie@...yeetech.com>,
        afzal mohammed <afzal.mohd.ma@...il.com>,
        Paul Cercueil <paul@...pouillou.net>,
        Liangliang Huang <huanglllzu@...il.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] MIPS: cevt-r4k: Enable intimer for Loongson64 CPUs with extimer



于 2020年10月2日 GMT+08:00 下午9:27:21, Thomas Bogendoerfer <tsbogend@...ha.franken.de> 写到:
>On Wed, Sep 23, 2020 at 07:02:54PM +0800, Jiaxun Yang wrote:
>>  
>> +#ifdef CONFIG_CPU_LOONGSON64
>> +static int c0_compare_int_enable(struct clock_event_device *cd)
>> +{
>> +	if (cpu_has_extimer)
>> +		set_c0_config6(LOONGSON_CONF6_INTIMER);
>
>why are you not simply do this in loognson64 board setup code and avoid
>the whole cluttering of #ifdef CONFIG_CPU_LOONGSON64 over common code ?

Because I'm going to add extimer support later that require dynamic switch of cevt-r4k.

This callback is required.

Thanks.

- Jiaxun

>
>Thomas.
>