Re: Patch for SC16IS7XX

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On Mon, 29 Jun 2015 13:44:04 +0200, Michael Allwright wrote:
> I tried your patch today and although it is a cleaner implementation
> than what I had, I'm still getting the same results as I did on
> Friday. When both devices are configured, the ttySC2,3 shows up in
> /dev but I can not get any RX or TX using picocom. I use the device
> tree to instantiate the devices and when only one device is present
> there are no issues (that is after the "fix FIFO address of secondary
> UART" from Bo is applied -
> http://www.spinics.net/lists/linux-serial/msg17820.html).
> 
> Here is the relevant parts of my device tree that are declared under
> the second I2C bus, and would stress the point, that if I comment out
> one of either "uart56: sc16is762@48" or "uart78: sc16is762@49", the
> other device works as expected, so this is definitely a software
> problem and not a hardware / device configuration problem.

Yeah, we are using port number to tell the chip line number.  Will cook
up a patch soon.

> Regarding not working on tty-next, I'm not actually sure what the
> correct workflow for resolving these sort of issues with the community
> is. Since I'm also working with linux-media who also have their own
> tree, I have been pulling the changes back and forth into my the
> mainline kernel for my application as patches. Perhaps there is a
> better way?

You could probably just merge linux-media into your tree, it doesn't
have very many patches.  But no worries, I think we got the cause of
the problem now.
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