Date: Sat, 11 Aug 2018 11:49:25 +0000 (UTC) From: lyd mc <alydiomc@yahoo.com> To: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org> Subject: Nanopi Neo I2C Message-ID: <165877705.5351934.1533988165694@mail.yahoo.com> References: <165877705.5351934.1533988165694.ref@mail.yahoo.com>
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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 root@nanopi-neo:~/prog/I2C # dmesg |grep iic iichb0: <Allwinner Integrated I2C Bus Controller> mem 0x1c2ac00-0x1c2afff i= rq 34 on simplebus0 iicbus0: <OFW I2C bus> on iichb0 iichb1: <Allwinner Integrated I2C Bus Controller> mem 0x1c2b000-0x1c2b3ff i= rq 35 on simplebus0 iicbus1: <OFW I2C bus> on iichb1 iichb2: <Allwinner Integrated I2C Bus Controller> mem 0x1c2b400-0x1c2b7ff i= rq 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 kdump output: =C2=A0 1290 mcp=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 NAMI=C2=A0 "/dev/iic0" =C2=A0 1290 mcp=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 RET=C2=A0=C2=A0 openat 3 =C2=A0 1290 mcp=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 CALL=C2=A0 ioctl(0x3,I2CRDWR,= 0xbfbfecd4) =C2=A0 1290 mcp=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 RET=C2=A0=C2=A0 ioctl -1 errn= o 2 No such file or directory This seems to work on my RPI. Regards,Alyd
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