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From: Jack Mitchell <jack.mitchell@eumx.net>
To: ml@communistcode.co.uk
Cc: Ben Gamari <bgamari.foss@gmail.com>,
	balbi@ti.com, linux-omap@vger.kernel.org,
	Shubhrajyoti Datta <omaplinuxkernel@gmail.com>
Subject: Re: AM335x BeagleBone SPI Issues
Date: Tue, 11 Dec 2012 16:36:02 +0000	[thread overview]
Message-ID: <50C760F2.6060701@eumx.net> (raw)
In-Reply-To: <50C75E54.2080805@communistcode.co.uk>

On 11/12/12 16:24, Jack Mitchell wrote:
> On 11/12/12 15:22, Ben Gamari wrote:
>> Jack Mitchell <ml@communistcode.co.uk> writes: 

>> <snip>
>
> Almost.
>
> I then tried spi1 and received:
>
> root@beaglebone:~# ./spidev -D /dev/spidev2.0
> spi mode: 0
> bits per word: 16
> max speed: 24000000 Hz (24000 KHz)
>
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF
> root@beaglebone:~# ./spidev_dma -D /dev/spidev2.0
> spi mode: 0
> bits per word: 8
> max speed: 500000 Hz (500 KHz)
>
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> FF FF FF FF FF FF
> root@beaglebone:~#
>
>

My bad! The jumper bridge had come loose, it works now! Yippee!

root@beaglebone:~# ./spidev -D /dev/spidev2.0
spi mode: 0
bits per word: 16
max speed: 24000000 Hz (24000 KHz)

FF FF FF FF FF FF
40 00 00 00 00 95
FF FF FF FF FF FF
FF FF FF FF FF FF
FF FF FF FF FF FF
DE AD BE EF BA AD
F0 0D
root@beaglebone:~#

Thanks everyone, and do I need to submit any patches to clear this all up?

Currently all I see is changing the clk pins from output to input (if 
this is a valid change?).

  reply	other threads:[~2012-12-11 16:51 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-12-10 13:23 AM335x BeagleBone SPI Issues Jack Mitchell
2012-12-10 13:53 ` Felipe Balbi
2012-12-10 14:50   ` Jack Mitchell
2012-12-10 14:59     ` Felipe Balbi
2012-12-10 15:19       ` Jack Mitchell
2012-12-10 15:26         ` Shubhrajyoti Datta
2012-12-10 16:18           ` Jack Mitchell
2012-12-10 18:35         ` Felipe Balbi
2012-12-11  6:39           ` Shubhrajyoti Datta
2012-12-11 10:17           ` Jack Mitchell
2012-12-11 10:20             ` Felipe Balbi
2012-12-11 10:38               ` Jack Mitchell
2012-12-11 11:48                 ` Felipe Balbi
2012-12-11 14:27                   ` Felipe Balbi
2012-12-11 15:23                     ` Jack Mitchell
2012-12-11 16:15                       ` Felipe Balbi
2012-12-11 15:22             ` Ben Gamari
2012-12-11 16:24               ` Jack Mitchell
2012-12-11 16:36                 ` Jack Mitchell [this message]
2012-12-11 17:02                 ` Jack Mitchell
2013-01-04 14:46                   ` Jan Lübbe
2013-01-04 16:21                     ` Jack Mitchell
2013-01-04 16:36                       ` Jack Mitchell
2012-12-11 17:03                 ` Felipe Balbi
2012-12-11 17:52                   ` Felipe Balbi
2012-12-12  8:07                     ` Felipe Balbi
  -- strict thread matches above, loose matches on Subject: below --
2012-12-10 13:17 Jack Mitchell

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