From: Ivor Kruger <ivor@veriline.co.za>
To: barebox@lists.infradead.org
Subject: FW: Writing to I2C device during Barebox boot
Date: Wed, 09 Oct 2013 18:59:54 -0700 [thread overview]
Message-ID: <CE7B57F6.8D31%ivor@veriline.co.za> (raw)
In-Reply-To: <CE7B48EC.8D30%ivor@veriline.co.za>
I can hardly believe it myself but I have succeeded (i think) in writing a
new driver for a I2C chip I use.
I probe the driver/device during boot and all seems well.
The device shows up in the device tree.
So before the init process for the board ends, I would like to write a few
values to the device (it controls the PSU, thus the reason for doing it in
barebox).
I want to do this in the board.c file at the end of the
pcm049_devices_init function. Is this the right place?
But this is where my linux knowledge is letting me down.
How do I get a "handle" to the device in order to call the write_reg
function?
Your pointers and help is much appreciated.
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next parent reply other threads:[~2013-10-10 2:00 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CE7B48EC.8D30%ivor@veriline.co.za>
2013-10-10 1:59 ` Ivor Kruger [this message]
2013-10-10 7:42 ` Jan Lübbe
2013-10-10 13:10 ` Ivor Kruger
2013-10-14 8:27 ` Sascha Hauer
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