[LinuxBIOS] [PATCH] Set CLKIN to 24 MHz for ITE Super I/Os

[Uwe Hermann]

Explicitly set the CLKIN to 24 MHz on all ITE Super I/Os, otherwise
serial output might not always work (correctly).
Thanks Philipp Degler  for testing and
reporting this issue.

Signed-off-by: Uwe Hermann

---

On Wed, Nov 29, 2006 at 01:51:27PM +0100, Philipp Degler wrote:
> we've tested the it8712f code, too. We see serial output on our ASUS a8ne. It 
> is equiped with a ck804 SB  and 1GB of RAM and a Athlon64 CPU.
>
> But we needed to set the clock to 24MHz in order to see valid serial output.
> Index: src/superio/ite/it8712f/it8712f_early_serial.c
>
> --- src/superio/ite/it8712f/it8712f_early_serial.c      (Revision 2507)
> +++ src/superio/ite/it8712f/it8712f_early_serial.c      (Arbeitskopie)
> @@ -78,7 +78,7 @@
>         it8712f_sio_write(IT8712F_IR,   0x30, 0x1); /* Consumer IR */
>     /* Select 24MHz/48MHz CLKIN (set/clear bit 0). TODO: Needed? */
>   /* it8712f_sio_write(0x00, IT8712F_CONFIG_REG_CLOCKSEL, 0x01); */
>   it8712f_sio_write(0x00, IT8712F_CONFIG_REG_CLOCKSEL, 0x01);
>
>   /* Clear software suspend mode (clear bit 0). TODO: Needed? */
>   /* it8712f_sio_write(0x00, IT8712F_CONFIG_REG_SWSUSP, 0x00); */

Thanks a lot!

For the next patch please add a sign-off line, otherwise we cannot
commit your patch. See also
http://www.linuxbios.org/Development_Guidelines

Cheers, Uwe.