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Subject: Re: FDT help
From: Daniel Braniss <danny@cs.huji.ac.il>
In-Reply-To: <20150424101610.469ba9bc@zeta.dino.sk>
Date: Fri, 24 Apr 2015 12:22:10 +0300
Cc: freebsd-arm@freebsd.org
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References: <80F17668-BEF0-42BD-9243-AE41ACAF255E@cs.huji.ac.il>
 <20150424101610.469ba9bc@zeta.dino.sk>
To: Milan Obuch <freebsd-arm@dino.sk>
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> On Apr 24, 2015, at 11:16 AM, Milan Obuch <freebsd-arm@dino.sk> wrote:
>=20
> On Fri, 24 Apr 2015 11:00:33 +0300
> Daniel Braniss <danny@cs.huji.ac.il> wrote:
>=20
>> Hi,
>> I have this in my rpi.dts file:
>> 	spi0 {
>> 		rfid0 {
>> 			compatible =3D =E2=80=9Crfid,mfrc5=E2=80=9D;
>> 			spi-chipselect =3D <0>;
>> 			reset {
>> 				compatible =3D =E2=80=9Cpcd-reset=E2=80=9D=
;
>> 				gpios =3D <&gpio 22 2>;
>> 			};
>> 	};
>>=20
>> my mfrc5 driver is starting to work - i can load, open, ioctl, =
unload,
>> but after much grepping, I can=E2=80=99t figure out how from inside =
the
>> driver i can access the reset pin - which i have defined as gpio 22
>> ofwdump -aP
>>=20
>> # ofwdump -aP
>>    ...
>>    Node 0x13c4: spi0
>>      compatible:
>>        62 72 6f 61 64 63 6f 6d 2c 62 63 6d 32 38 33 35 2d 73 70 69=20
>>        00 62 72 6f 61 64 63 6f 6d 2c 62 63 6d 32 37 30 38 2d 73 70=20
>>        69 00=20
>>      reg:
>>        00 20 40 00 00 00 00 20=20
>>      interrupts:
>>        00 00 00 3e=20
>>      interrupt-parent:
>>        00 00 00 01=20
>>      Node 0x143c: rfid0
>>        compatible:
>>          72 66 69 64 2c 6d 66 72 63 35 00=20
>>          'rfid,mfrc5'
>>        spi-chipselect:
>>          00 00 00 00=20
>>        Node 0x1470: reset
>>          compatible:
>>            70 63 64 2d 72 65 73 65 74 00=20
>>            'pcd-reset'
>>          gpios:
>>            00 00 00 03 00 00 00 16 00 00 00 02=20
>>=20
>> thanks,
>> 	danny
>>=20
>=20
> Hello,
>=20
> I think following could help - I am forwarding what was given to me in
> similar circumstances :)
>=20
> http://pastebin.com/4mbZFuv1 <http://pastebin.com/4mbZFuv1>

argh, is this for -stable or -current?

thanks,
	danny

>=20
> Regards,
> Milan
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