linux-kernel - Re: [PATCH v5 1/2] spi: Add Renesas R-Car Gen3 RPC-IF SPI controller driver

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Message-ID: <a4373a7f-07c4-baff-30a3-d1f5a294e1bb@cogentembedded.com>
Date:   Wed, 9 Jan 2019 22:04:02 +0300
From:   Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Mason Yang <masonccyang@...c.com.tw>,
        Mark Brown <broonie@...nel.org>,
        Marek Vasut <marek.vasut@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-spi <linux-spi@...r.kernel.org>,
        Boris Brezillon <boris.brezillon@...tlin.com>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        juliensu@...c.com.tw, Simon Horman <horms@...ge.net.au>,
        zhengxunli@...c.com.tw
Subject: Re: [PATCH v5 1/2] spi: Add Renesas R-Car Gen3 RPC-IF SPI controller
 driver

On 01/09/2019 09:49 PM, Geert Uytterhoeven wrote:

>>> Add a driver for Renesas R-Car Gen3 RPC-IF SPI controller.
>>>
>>> Signed-off-by: Mason Yang <masonccyang@...c.com.tw>
>>
>>    You now need to add:
>>
>> Signed-off-by: Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
> 
>>> --- a/drivers/spi/Kconfig
>>> +++ b/drivers/spi/Kconfig
>>> @@ -544,6 +544,12 @@ config SPI_RSPI
>>>       help
>>>         SPI driver for Renesas RSPI and QSPI blocks.
>>>
>>> +config SPI_RENESAS_RPC_IF
>>
>>    Since the driver is called without -IF suffix, I wouldn't use it in the
>> Kconfig name either, the following is enough:
>>
>>> +     tristate "Renesas R-Car Gen3 RPC-IF SPI controller"
>>> +     depends on ARCH_RENESAS || COMPILE_TEST
>>
>>    Judging on the compilation error reported by the 0-day bot about readq(),
>> we now need to depend on 64BIT or something...
> 
> IIRC, this hardware block is also used on RZ/A, which is 32-bit.

  I'm not seeing it in the "RZ/A1H Group, RZ/A1M Group User’s Manual: Hardware"
Rev 3.00. What SoC did you have in mind?

> Gr{oetje,eeting}s,
> 
>                         Geert

MBR, Sergei