Date: Sat, 11 Aug 2018 16:01:52 +0000 (UTC) From: lyd mc <alydiomc@yahoo.com> To: Daniel Braniss <danny@cs.huji.ac.il>, "ian@freebsd.org" <ian@freebsd.org> Cc: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>, eval@iptk.ru, Milan Obuch <freebsd-arm@dino.sk> Subject: Re: Nanopi Neo I2C Message-ID: <289384556.5384363.1534003312078@mail.yahoo.com> In-Reply-To: <5E1DB0F5-EF98-46A8-8D33-11052834E35C@cs.huji.ac.il> References: <165877705.5351934.1533988165694.ref@mail.yahoo.com> <165877705.5351934.1533988165694@mail.yahoo.com> <1533999888.31375.6.camel@freebsd.org> <2122126425.5355832.1534000914963@mail.yahoo.com> <5E1DB0F5-EF98-46A8-8D33-11052834E35C@cs.huji.ac.il>
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=20
Thanks Danny and Ian!
Regards,Alyd
On Saturday, August 11, 2018, 11:50:37 PM GMT+8, Daniel Braniss <danny@=
cs.huji.ac.il> wrote: =20
=20
=20
> On 11 Aug 2018, at 18:21, lyd mc via freebsd-arm <freebsd-arm@freebsd.org=
> wrote:
>=20
> Hi Ian,
> The iic bus seem to be working on linux image. I can detect the device at=
0x18.
> root@nanopi-neo:~/prog/I2C #=C2=A0 i2c -f /dev/iic0 -s
> Hardware may not support START/STOP scanning; trying less-reliable read m=
ethod.
> Scanning I2C devices on /dev/iic0: <none found>
>=20
> some kdump output of above command:=C2=A0 871 i2c=C2=A0 =C2=A0 =C2=A0 CAL=
L=C2=A0 ioctl(0x3,I2CRSTCARD,0xbfbfec64)
>=C2=A0 =C2=A0 871 i2c=C2=A0 =C2=A0 =C2=A0 RET=C2=A0 ioctl 0
>=C2=A0 =C2=A0 871 i2c=C2=A0 =C2=A0 =C2=A0 CALL=C2=A0 ioctl(0x3,I2CSTART,0x=
bfbfec64)
>=C2=A0 =C2=A0 871 i2c=C2=A0 =C2=A0 =C2=A0 RET=C2=A0 ioctl -1 errno 2 No su=
ch file or directory
>=C2=A0 =C2=A0 871 i2c=C2=A0 =C2=A0 =C2=A0 CALL=C2=A0 ioctl(0x3,I2CSTOP,0xb=
fbfec64)
>=C2=A0 =C2=A0 871 i2c=C2=A0 =C2=A0 =C2=A0 RET=C2=A0 ioctl 0
> .<snip>=C2=A0 871 i2c=C2=A0 =C2=A0 =C2=A0 CALL=C2=A0 ioctl(0x3,I2CRSTCARD=
,0xbfbfec64)
>=C2=A0 =C2=A0 871 i2c=C2=A0 =C2=A0 =C2=A0 RET=C2=A0 ioctl 0
>=C2=A0 =C2=A0 871 i2c=C2=A0 =C2=A0 =C2=A0 CALL=C2=A0 ioctl(0x3,I2CRDWR,0xb=
fbfec50)
>=C2=A0 =C2=A0 871 i2c=C2=A0 =C2=A0 =C2=A0 RET=C2=A0 ioctl -1 errno 2 No su=
ch file or directory
>=C2=A0 =C2=A0 871 i2c=C2=A0 =C2=A0 =C2=A0 CALL=C2=A0 ioctl(0x3,I2CRSTCARD,=
0xbfbfec64)
>=C2=A0 =C2=A0 871 i2c=C2=A0 =C2=A0 =C2=A0 RET=C2=A0 ioctl 0
>=C2=A0 =C2=A0 871 i2c=C2=A0 =C2=A0 =C2=A0 CALL=C2=A0 ioctl(0x3,I2CRDWR,0xb=
fbfec50)
>=C2=A0 =C2=A0 871 i2c=C2=A0 =C2=A0 =C2=A0 RET=C2=A0 ioctl -1 errno 2 No su=
ch file or directory
> Seems I2CRSTCARD and I2CSTOP are the only working ioctl on me.
> I activated i2c0 using below dts code:
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 i2c@1c2ac00 {
>=20
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 compatible =3D "allwinner,sun6i-a31-i2c";
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 reg =3D <0x1c2ac00 0x400>;
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 interrupts =3D <0x0 0x6 0x4>;
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 clocks =3D <0x1d 0x3b>;
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 resets =3D <0x1d 0x2e>;
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 pinctrl-names =3D "default";
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 pinctrl-0 =3D <0x20>;
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 status =3D "okay";
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 #address-cells =3D <0x1>;
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 #size-cells =3D <0x0>;
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 phandle =3D <0x41>;
>=20
>=20
> Regards,Alyd
>=C2=A0 =C2=A0 On Saturday, August 11, 2018, 11:04:54 PM GMT+8, Ian Lepore =
<ian@freebsd.org> wrote:=C2=A0=20
>=20
> On Sat, 2018-08-11 at 11:49 +0000, lyd mc via freebsd-arm wrote:
>> Hi List,
>> Can you help me make I2C work in this board?
>> I can detect the controller but cannot access it through iic ioctl.=20
>>=20
>> root@nanopi-neo:~/prog/I2C # dmesg |grep iic
>> iichb0: <Allwinner Integrated I2C Bus Controller> mem 0x1c2ac00-
>> 0x1c2afff irq 34 on simplebus0
>> iicbus0: <OFW I2C bus> on iichb0
>> iichb1: <Allwinner Integrated I2C Bus Controller> mem 0x1c2b000-
>> 0x1c2b3ff irq 35 on simplebus0
>> iicbus1: <OFW I2C bus> on iichb1
>> iichb2: <Allwinner Integrated I2C Bus Controller> mem 0x1c2b400-
>> 0x1c2b7ff irq 36 on simplebus0
>> iicbus2: <OFW I2C bus> on iichb2
>> iic0: <I2C generic I/O> on iicbus0
>> iic1: <I2C generic I/O> on iicbus1
>> iic2: <I2C generic I/O> on iicbus2
>>=20
>> kdump output:
>>=20
>>=C2=A0 1290 mcp=C2=A0 =C2=A0 =C2=A0 NAMI=C2=A0 "/dev/iic0"
>>=C2=A0 1290 mcp=C2=A0 =C2=A0 =C2=A0 RET=C2=A0 openat 3
>>=C2=A0 1290 mcp=C2=A0 =C2=A0 =C2=A0 CALL=C2=A0 ioctl(0x3,I2CRDWR,0xbfbfec=
d4)
>>=C2=A0 1290 mcp=C2=A0 =C2=A0 =C2=A0 RET=C2=A0 ioctl -1 errno 2 No such fi=
le or directory
>>=20
>> This seems to work on my RPI.
>>=20
>=20
> In this case, I wonder if the "errno 2" is not ENOENT, but
> rather IIC_ENOACK which has not been translated to a proper errno
> before returning. IIC_ENOACK is basically a timeout and can happen if
> the slave address is wrong, or if the pinmux is wrong so that the bus
> is electrically inactive.
>=20
> Is the bus working in general? Do any devices show up on a scan with
>=20
>=C2=A0 i2c -f /dev/iic0 -s
>=20
> -- Ian
>=20
the driver has timing issues (among others :-). I=E2=80=99m cc=E2=80=99ing =
the guys I got a =E2=80=98working=E2=80=99=C2=A0 twsi stuff=20
to see if I can pass it on.
danny
=20
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In-Reply-To: <201808111507.w7BF7Fmi028163@pdx.rh.CN85.dnsmgr.net>
From: Warner Losh <imp@bsdimp.com>
Date: Sat, 11 Aug 2018 10:33:16 -0600
Message-ID: <CANCZdfr1gPHARyfE9XV5+jMHoNtfWPof9Yn5_6+pJqtUPm-MkA@mail.gmail.com>
Subject: Re: Kill old, non-INTRNG code on ARM
To: "Rodney W. Grimes" <freebsd-rwg@pdx.rh.cn85.dnsmgr.net>
Cc: freebsd-arm@freebsd.org
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On Sat, Aug 11, 2018, 9:07 AM Rodney W. Grimes <
freebsd-rwg@pdx.rh.cn85.dnsmgr.net> wrote:
> > One last thing, even though we're in a slush, is to kill the pre-INTRNG
> > code.
> >
> > It's required for armv6 and v7 for some time (only the Amlogic 8726
> boards
> > remain broken there). And we're down to two families of chips which
> support
> > armv5: rt1310 and the Marvel gear. Both of them support INTRNG.
> >
> > I propose we eliminate the INTRNG option and unifdef the code to remove
> the
> > undefined case.
> >
> > Comments?
>
> Where is the deprication policy?
>
This is dead code elimination only... ;)
Warner
>
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