linux-kernel - Re: [PATCH v2 2/2] drm/bridge: anx7688: Add anx7688 bridge driver support

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Date:   Fri, 06 Mar 2020 16:53:46 +0800
From:   Icenowy Zheng <icenowy@...c.io>
To:     Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Ond�0�0ej Jirman <megous@...ous.com>,
        Vasily Khoruzhick <anarsoul@...il.com>,
        Enric Balletbo Serra <eballetbo@...il.com>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Nicolas Boichat <drinkcat@...omium.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        David Airlie <airlied@...ux.ie>, Torsten Duwe <duwe@...e.de>,
        Jonas Karlman <jonas@...boo.se>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Maxime Ripard <maxime@...no.tech>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Collabora Kernel ML <kernel@...labora.com>
Subject: Re: [PATCH v2 2/2] drm/bridge: anx7688: Add anx7688 bridge driver
 support

在 2020-03-06星期五的 09:46 +0100，Enric Balletbo i Serra写道：
> Hi Ondrej,
> 
> On 5/3/20 20:35, Ondřej Jirman wrote:
> > Hi,
> > 
> > On Thu, Mar 05, 2020 at 10:29:33AM -0800, Vasily Khoruzhick wrote:
> > > On Thu, Mar 5, 2020 at 7:28 AM Enric Balletbo i Serra
> > > <enric.balletbo@...labora.com> wrote:
> > > > Hi Vasily,
> > > 
> > > CC: Icenowy and Ondrej
> > > > Would you mind to check which firmware version is running the
> > > > anx7688 in
> > > > PinePhone, I think should be easy to check with i2c-tools.
> > > 
> > > Icenowy, Ondrej, can you guys please check anx7688 firmware
> > > version?
> > 
> > i2cget 0 0x28 0x00 w
> > 0xaaaa
> > 
> > i2cget 0 0x28 0x02 w
> > 0x7688
> > 
> > i2cget 0 0x28 0x80 w
> > 0x0000
> > 
> 
> Can you check the value for 0x81 too?

root@...-pinephone [ ~ ] # i2cdump 0 0x28
No size specified (using byte-data access)
WARNING! This program can confuse your I2C bus, cause data loss and
worse!
I will probe file /dev/i2c-0, address 0x28, mode byte
Continue? [Y/n] 
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    0123456789abcdef
00: aa aa 88 76 ac 00 00 00 00 00 00 00 00 00 05 05    ???v?.........??
10: 30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    0...............
20: 00 00 00 00 00 00 00 00 00 00 00 24 f2 e4 ff 00    ...........$??..
30: 06 40 00 04 94 11 20 ff ff 03 00 bf ff ff 10 01    ?@...? ..?.?..??
40: 72 a4 00 09 00 08 05 84 15 40 17 00 00 0a 00 e0    r?.?.????@...?.?
50: 00 00 00 0a 10 00 e0 df ff ff 00 00 00 10 71 00    ...??.??.....?q.
60: 10 10 04 29 2d 21 10 01 09 13 00 03 e8 13 88 00    ???)-!????.????.
70: 00 19 18 83 16 5c 11 00 ff 00 00 0d 04 38 42 07    .????\?....??8B?
80: 00 00 00 00 00 74 1b 19 44 08 75 00 00 00 00 00    .....t??D?u.....
90: 01 02 00 00 00 00 03 00 ff 30 00 59 01 00 00 00    ??....?..0.Y?...
a0: 00 ff fe ff ff 00 00 00 00 00 00 00 00 00 00 02    ..?............?
b0: 00 00 00 00 00 00 40 00 28 00 00 00 00 44 08 00    ......@.(....D?.
c0: 00 00 00 00 80 00 10 01 0a 10 18 00 00 fd 00 00    ....?.?????..?..
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
e0: 50 10 08 50 00 02 00 70 00 00 30 10 0b 02 1c 01    P??P.?.p..0?????
f0: 00 0b 07 00 94 11 7f 00 00 00 00 00 00 01 0e ff    .??.???......??.
root@...-pinephone [ ~ ] # i2cdump 0 0x2c
No size specified (using byte-data access)
WARNING! This program can confuse your I2C bus, cause data loss and
worse!
I will probe file /dev/i2c-0, address 0x2c, mode byte
Continue? [Y/n] 
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    0123456789abcdef
00: 29 1f 88 76 00 ac 11 00 11 20 10 10 00 00 00 00    )??v.??.? ??....
10: 03 00 ff 8f ff 7f 00 00 00 00 05 00 10 0a 0c 00    ?..?.?....?.???.
20: 00 00 00 00 99 06 c0 00 00 00 00 00 00 00 02 00    ....???.......?.
30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
40: 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ?...............
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
70: b8 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ?...............
80: 01 25 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ?%..............
90: 0f 0f 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ??..............
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................

> 
> Thanks,
>  Enric
> 
> 
> > regards,
> > 	o.
> > 
> > > > Thanks in advance,
> > > >  Enric
> > > > 
> > > > [snip]