[U-Boot] [PATCH 7/8] pl01x: add support for Ux500 variant of pl011

[Tom <Tom.Rix@windriver.com>]

Rabin Vincent wrote:
> The Ux500 variants of the pl011 have separate LCRH registers for RX and
> TX.  The TX register is at the same offset as the unmodified pl011, so
> we need to additionally program only the RX register.
> 
> Acked-by: Michael Brandt <michael.brandt@stericsson.com>
> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>

This is serial and not ARM.
My opinion is that the board specific #if-def could be cleaner.

Tom

> ---
> I have used the style of the surrounding code here.
> 
>  drivers/serial/serial_pl01x.c |    8 ++++++++
>  drivers/serial/serial_pl01x.h |    1 +
>  2 files changed, 9 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/serial/serial_pl01x.c b/drivers/serial/serial_pl01x.c
> index c645cef..c819f1d 100644
> --- a/drivers/serial/serial_pl01x.c
> +++ b/drivers/serial/serial_pl01x.c
> @@ -144,6 +144,14 @@ int serial_init (void)
>  	IO_WRITE (port[CONSOLE_PORT] + UART_PL011_LCRH,
>  		  (UART_PL011_LCRH_WLEN_8 | UART_PL011_LCRH_FEN));
>  
> +#ifdef CONFIG_UX500
> +	/*
> +	 * On Ux500 variants, also set up the separate LCRH for RX.
> +	 */
> +	IO_WRITE (port[CONSOLE_PORT] + UART_PL011_LCRH_RX,
> +		  (UART_PL011_LCRH_WLEN_8 | UART_PL011_LCRH_FEN));
> +#endif
> +
>  	/*
>  	 ** Finally, enable the UART
>  	 */
> diff --git a/drivers/serial/serial_pl01x.h b/drivers/serial/serial_pl01x.h
> index 5f20fdd..0ff6203 100644
> --- a/drivers/serial/serial_pl01x.h
> +++ b/drivers/serial/serial_pl01x.h
> @@ -93,6 +93,7 @@
>   *  PL011 definitions
>   *
>   */
> +#define UART_PL011_LCRH_RX              0x1C
>  #define UART_PL011_IBRD                 0x24
>  #define UART_PL011_FBRD                 0x28
>  #define UART_PL011_LCRH                 0x2C