Re: [PATCH-v5 2/5] i2c: pxa: enable/disable i2c module across msg xfer

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 






On Wednesday 05 August 2015 04:16 PM, Shubhrajyoti Datta wrote:
hi ,
On Tue, Jul 21, 2015 at 6:11 PM, Vaibhav Hiremath
<vaibhav.hiremath@xxxxxxxxxx> wrote:
From: Yi Zhang <yizhang@xxxxxxxxxxx>

Enable i2c module/unit before transmission and disable when it
finishes.

why?
It's because the i2c bus may be disturbed if the slave device,
typically a touch, powers on.

Why should that be an issue?
Is it an errata.


Not I am aware of.

In which mode it is an issue slave / master or both?


since it talks about touch, I expect it to be master mode.

Thanks,
Vaibhav
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Device Tree Compilter]     [Device Tree Spec]     [Linux Driver Backports]     [Video for Linux]     [Linux USB Devel]     [Linux PCI Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Yosemite Backpacking]
  Powered by Linux