Re: [Xen-devel] [PATCH V3 28/41] xen/arm: Add generic UART to get the device in the device tree

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Fri, 2013-05-10 at 03:18 +0100, Julien Grall wrote:
> This generic UART will find the right UART via xen command line
> with dtuart=myserial.
> 
> "myserial" is the alias of the UART in the device tree. Xen will retrieve
> the information via the device tree and call the initialization function for
> this specific UART thanks to the device API.
> 
> Signed-off-by: Julien Grall <julien.grall@xxxxxxxxxx>


> CC: keir@xxxxxxx
> 
> Changes in v3:
>     - Rename arm-uart.c (resp. arm_uart_init) to dt-uart.c (resp. 
> dt_uart_init)
>     - Remove serial_arm_defaults and replace by a string options
>     - Let the specific UART driver to get its base address in the DT
>     - Add SERHND_DTUART. The value is stolen to SERHND_COM1. Bump the
>     value would needs some rework...

This is because of the need to encode the value in 2 bits? Due to
SERHND_IDX etc, is the rework more than simply changing the mask and
bumping the flags up and increasing the size of the com array?

I'm OK with this for 4.3 if Keir is:

Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>



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