From: Vasily Khoruzhick <anarsoul@gmail.com>
To: wens@kernel.org
Cc: Stefan Mavrodiev <stefan@olimex.com>,
Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
Maxime Ripard <maxime.ripard@bootlin.com>,
"moderated list:ARM/Allwinner sunXi SoC support"
<linux-arm-kernel@lists.infradead.org>,
open list <linux-kernel@vger.kernel.org>,
linux-sunxi <linux-sunxi@googlegroups.com>
Subject: Re: [linux-sunxi] Re: [PATCH 1/1] nvmem: sunxi_sid: fix A64 SID controller support
Date: Wed, 31 Jul 2019 18:42:14 -0700 [thread overview]
Message-ID: <CA+E=qVcY2PE3zg3CRNGD4vLbLTdov6wgioUrbijp-W6km9SCaA@mail.gmail.com> (raw)
In-Reply-To: <CAGb2v64tzMypnB5Ho2A-gWPk2yYsmH9tNn+OKfb51c+d6pK=kw@mail.gmail.com>
On Wed, Jul 31, 2019 at 1:43 AM Chen-Yu Tsai <wens@csie.org> wrote:
>
> On Wed, Jul 31, 2019 at 3:15 PM Stefan Mavrodiev <stefan@olimex.com> wrote:
> >
> > Like in H3, A64 SID controller doesn't return correct data
> > when using direct access. It appears that on A64, SID needs
> > 8 bytes of word_size.
> >
> > Workaround is to enable read by registers.
I came up with identical patch while adding A64 support into
sun8i-thermal driver, so:
> >
> > Signed-off-by: Stefan Mavrodiev <stefan@olimex.com>
>
> Acked-by: Chen-Yu Tsai <wens@csie.org>
Tested-by: Vasily Khoruzhick <anarsoul@gmail.com>
>
> And for single patches, you don't need to write a separate cover letter.
> Just put whatever you need to add after the "---" separator.
>
> > ---
> > drivers/nvmem/sunxi_sid.c | 1 +
> > 1 file changed, 1 insertion(+)
> >
> > diff --git a/drivers/nvmem/sunxi_sid.c b/drivers/nvmem/sunxi_sid.c
> > index a079a80ddf2c..e26ef1bbf198 100644
> > --- a/drivers/nvmem/sunxi_sid.c
> > +++ b/drivers/nvmem/sunxi_sid.c
> > @@ -186,6 +186,7 @@ static const struct sunxi_sid_cfg sun8i_h3_cfg = {
> > static const struct sunxi_sid_cfg sun50i_a64_cfg = {
> > .value_offset = 0x200,
> > .size = 0x100,
> > + .need_register_readout = true,
> > };
> >
> > static const struct sunxi_sid_cfg sun50i_h6_cfg = {
> > --
> > 2.17.1
> >
>
> --
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> To view this discussion on the web, visit https://groups.google.com/d/msgid/linux-sunxi/CAGb2v64tzMypnB5Ho2A-gWPk2yYsmH9tNn%2BOKfb51c%2Bd6pK%3Dkw%40mail.gmail.com.
next prev parent reply other threads:[~2019-08-01 1:42 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-31 7:14 [PATCH 0/1] " Stefan Mavrodiev
2019-07-31 7:14 ` [PATCH 1/1] " Stefan Mavrodiev
2019-07-31 8:43 ` Chen-Yu Tsai
2019-08-01 1:42 ` Vasily Khoruzhick [this message]
2019-08-06 10:03 ` Srinivas Kandagatla
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