[U-Boot] [PATCH V2 4/6] i.mx: serial_mxc: add the i.mx6q support

[Stefano Babic <sbabic@denx.de>]

On 18/11/2011 08:11, Jason Liu wrote:
> Signed-off-by: Jason Liu <jason.hui@linaro.org>
> Cc: Stefano Babic <sbabic@denx.de>
> ---
> v2: Cc Stefano
> ---
>  drivers/serial/serial_mxc.c |   10 +++++++---
>  1 files changed, 7 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/serial/serial_mxc.c b/drivers/serial/serial_mxc.c
> index dcb4bd1..7d0f288 100644
> --- a/drivers/serial/serial_mxc.c
> +++ b/drivers/serial/serial_mxc.c
> @@ -47,14 +47,18 @@
>  #elif defined(CONFIG_SYS_MX27_UART6)
>  #define UART_PHYS 0x1001c000
>  #elif defined(CONFIG_SYS_MX35_UART1) || defined(CONFIG_SYS_MX51_UART1) || \
> -	defined(CONFIG_SYS_MX53_UART1)
> +	defined(CONFIG_SYS_MX53_UART1) || defined(CONFIG_MX6Q_UART1)
>  #define UART_PHYS UART1_BASE_ADDR
>  #elif defined(CONFIG_SYS_MX35_UART2) || defined(CONFIG_SYS_MX51_UART2) || \
> -	defined(CONFIG_SYS_MX53_UART2)
> +	defined(CONFIG_SYS_MX53_UART2) || defined(CONFIG_MX6Q_UART2)
>  #define UART_PHYS UART2_BASE_ADDR
>  #elif defined(CONFIG_SYS_MX35_UART3) || defined(CONFIG_SYS_MX51_UART3) || \
> -	defined(CONFIG_SYS_MX53_UART3)
> +	defined(CONFIG_SYS_MX53_UART3) || defined(CONFIG_MX6Q_UART3)
>  #define UART_PHYS UART3_BASE_ADDR
> +#elif defined(CONFIG_MX6Q_UART4)
> +#define UART_PHYS UART4_BASE_ADDR
> +#elif defined(CONFIG_MX6Q_UART5)
> +#define UART_PHYS UART5_BASE_ADDR
>  #else
>  #error "define CONFIG_SYS_MXxx_UARTx to use the MXC UART driver"
>  #endif

This is not a comment of your patch, but I cannot avoid to note how much
crap in this file. And we have not yet added all possible values for
each SOC, only the values necessary to build the actual boards.

The worst thing is that we do not need all this stuff. We set a lot of
#ifdef only to set the UART base address, and we really ignore (because
unneeded) the CONFIG_SYS_*_UART_*. It should be really better to define
the base address in the board configuration file, as we already do for
other drivers (USB with ehci base address, SD,..). Maybe with a
MXC_UART_BASE_ADDRESS, and we can get rid of all this bad stuff.

I will prepare a patch...

Best regards,
Stefano Babic

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