On 03/23/2012 03:06 AM, Michael Brunner wrote:
> Add UART clock quirk for the Kontron COMe-mTT10 module.
>
> The board has previously been called nanoETXexpress-TT, therefore this
> is also checked.
>
> As suggested by Darren Hart the comparison in this patch version is
> placed after the FRI2 checks to ensure it will also work with possible
> upcoming changes to the FRI2 firmware.
>
> This patch follows the patchset submitted by Darren Hart at
> commit a46f5533ecfc7bbdd646d84fdab8656031a715c6.
>
> Signed-off-by: Michael Brunner <mibru@xxxxxx>
> ---
> drivers/tty/serial/pch_uart.c | 7 +++++++
> 1 files changed, 7 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
> index 332f2eb..dd69c95 100644
> --- a/drivers/tty/serial/pch_uart.c
> +++ b/drivers/tty/serial/pch_uart.c
> @@ -210,6 +210,7 @@ enum {
> #define CMITC_UARTCLK 192000000 /* 192.0000 MHz */
> #define FRI2_64_UARTCLK 64000000 /* 64.0000 MHz */
> #define FRI2_48_UARTCLK 48000000 /* 48.0000 MHz */
> +#define NTC1_UARTCLK 64000000 /* 64.0000 MHz */
>
> struct pch_uart_buffer {
> unsigned char *buf;
> @@ -388,6 +389,12 @@ static int pch_uart_get_uartclk(void)
> if (cmp && strstr(cmp, "Fish River Island II"))
> return FRI2_48_UARTCLK;
>
> + /* Kontron COMe-mTT10 (nanoETXexpress-TT) */
> + cmp = dmi_get_system_info(DMI_BOARD_NAME);
> + if (cmp && (strstr(cmp, "COMe-mTT") ||
> + strstr(cmp, "nanoETXexpress-TT")))
> + return NTC1_UARTCLK;
> +
I don't know the cost of a dmi_get_system_info() call, since we already
grabbed BOARD_NAME, would it make sense to reuse that value by using a
dedicated cmp string?
...
Hrm, just appears to be an array lookup...
return dmi_ident[field];
No real loss there.
Acked-by: Darren Hart <dvhart@xxxxxxxxxxxxxxx>
--
Darren Hart
Intel Open Source Technology Center
Yocto Project - Linux Kernel
--
To unsubscribe from this list: send the line "unsubscribe linux-serial" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
