linux-kernel - Re: [PATCH 2/3] clk: renesas: r8a7795: Add ccree clock

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Message-ID: <CAOtvUMf0pnX1+MOz0KkB5LxqL5HTmLRYjVZTUrAx-eCvm26+LA@mail.gmail.com>
Date:   Thu, 17 May 2018 11:00:10 +0300
From:   Gilad Ben-Yossef <gilad@...yossef.com>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Simon Horman <horms@...ge.net.au>,
        Magnus Damm <magnus.damm@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Ofir Drang <ofir.drang@....com>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        Linux Crypto Mailing List <linux-crypto@...r.kernel.org>
Subject: Re: [PATCH 2/3] clk: renesas: r8a7795: Add ccree clock

On Tue, May 15, 2018 at 5:47 PM, Geert Uytterhoeven
<geert@...ux-m68k.org> wrote:
> Hi Gilad,
>
> On Tue, May 15, 2018 at 2:29 PM, Gilad Ben-Yossef <gilad@...yossef.com> wrote:
>> This patch adds the clock used by the CryptoCell 630p instance in the SoC.
>>
>> Signed-off-by: Gilad Ben-Yossef <gilad@...yossef.com>
>
> Thanks for your patch!
>
>> --- a/drivers/clk/renesas/r8a7795-cpg-mssr.c
>> +++ b/drivers/clk/renesas/r8a7795-cpg-mssr.c
>> @@ -132,6 +132,7 @@ static struct mssr_mod_clk r8a7795_mod_clks[] __initdata = {
>>         DEF_MOD("sys-dmac2",             217,   R8A7795_CLK_S0D3),
>>         DEF_MOD("sys-dmac1",             218,   R8A7795_CLK_S0D3),
>>         DEF_MOD("sys-dmac0",             219,   R8A7795_CLK_S0D3),
>> +       DEF_MOD("ccree",                 229,   R8A7795_CLK_S3D2),
>
> I don't know if "ccree" is the proper name for this clock, as there
> may be multiple
> instances.

I'd be happy to rename it to anything else. Suggestions?

> I also can't verify the parent clock.

I'm afraid I can't really help. This is based on code snippet from
Renesas. I verified it works but
I am not an expert on the clock settings :-(

>
>>         DEF_MOD("cmt3",                  300,   R8A7795_CLK_R),
>>         DEF_MOD("cmt2",                  301,   R8A7795_CLK_R),
>>         DEF_MOD("cmt1",                  302,   R8A7795_CLK_R),
>
> Gr{oetje,eeting}s,
>
>                         Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds



-- 
Gilad Ben-Yossef
Chief Coffee Drinker

"If you take a class in large-scale robotics, can you end up in a
situation where the homework eats your dog?"
 -- Jean-Baptiste Queru