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The IT8712F needs to have the configuration bits changed to handle the power for 

memory correctly during suspend.s

Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Acked-by: Peter Stuge <peter@stuge.se>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4096 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Rudolf Marek 2009-04-12 18:01:55 +00:00
parent 7845fb59a2
commit e86c65b62e
1 changed files with 16 additions and 0 deletions
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16
src/superio/ite/it8712f/it8712f_early_serial.c
View File

@ -32,6 +32,7 @@
#define IT8712F_CONFIG_REG_CONFIGSEL 0x22 /* Configuration Select. */
#define IT8712F_CONFIG_REG_CLOCKSEL 0x23 /* Clock Selection. */
#define IT8712F_CONFIG_REG_SWSUSP 0x24 /* Software Suspend, Flash I/F. */
#define IT8712F_CONFIG_REG_MFC 0x2a /* Multi-function control */
#define IT8712F_CONFIG_REG_WATCHDOG 0x72 /* Watchdog control. */
#define IT8712F_CONFIGURATION_PORT 0x2e /* Write-only. */
@ -78,6 +79,21 @@ static void it8712f_24mhz_clkin(void)
}
static void it8712f_enable_3vsbsw(void) {
/* We need to set enable 3VSBSW#, this was documented only in IT8712F_V0.9.2!
LDN 7, reg 0x2a - needed for S3, or memory power will be cut off.
Enable 3VSBSW#. (For System Suspend-to-RAM)
0: 3VSBSW# will be always inactive.
1: 3VSBSW# enabled. It will be (NOT SUSB#) NAND SUSC#.
*/
it8712f_enter_conf();
it8712f_sio_write(0x07, IT8712F_CONFIG_REG_MFC, 0x80);
it8712f_exit_conf();
}
static void it8712f_kill_watchdog(void)
{
it8712f_enter_conf();