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superio winbond w83627dhg: add a function which is used on tyan s8226 

this function is used on serial output of tyan s8226

Change-Id: I5f7fa535b922b224e381886f1bea64623fa549ef
Signed-off-by: Siyuan Wang <SiYuan.Wang@amd.com>
Signed-off-by: Siyuan Wang <wangsiyuanbuaa@gmail.com>
Reviewed-on: http://review.coreboot.org/1494
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
This commit is contained in:
Siyuan Wang 2012-09-07 19:18:16 +08:00 committed by Alexandru Gagniuc
parent 87b5aa9e67
commit cf8bcfc9dd
2 changed files with 11 additions and 0 deletions
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10
src/superio/winbond/w83627dhg/early_serial.c
View File

@ -67,3 +67,13 @@ void w83627dhg_enable_i2c(device_t dev)
pnp_exit_ext_func_mode(dev);
}
void w83627dhg_set_clksel_48(device_t dev)
{
u8 reg8;
pnp_enter_ext_func_mode(dev);
reg8 = pnp_read_config(dev, 0x24);
reg8 |= (1 << 6); /* Set CLKSEL (clock input on pin 1) to 48MHz. */
pnp_write_config(dev, 0x24, reg8);
pnp_exit_ext_func_mode(dev);
}

1
src/superio/winbond/w83627dhg/w83627dhg.h
View File

@ -56,5 +56,6 @@ void pnp_enter_ext_func_mode(device_t dev);
void pnp_exit_ext_func_mode(device_t dev);
void w83627dhg_enable_serial(device_t dev, u16 iobase);
void w83627dhg_enable_i2c(device_t dev);
void w83627dhg_set_clksel_48(device_t dev);
#endif