diff options
Diffstat (limited to 'src/superio')
| -rw-r--r-- | src/superio/smsc/sch5545/sch5545_early_init.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/superio/smsc/sch5545/sch5545_early_init.c b/src/superio/smsc/sch5545/sch5545_early_init.c index ed4fa5337b..d77ed0d750 100644 --- a/src/superio/smsc/sch5545/sch5545_early_init.c +++ b/src/superio/smsc/sch5545/sch5545_early_init.c @@ -100,6 +100,13 @@ void sch5545_early_init(unsigned int port) sch5545_set_led(SCH5545_RUNTIME_REG_BASE, SCH5545_LED_COLOR_GREEN, SCH5545_LED_BLINK_ON); + /* + * Clear global PME status and disable PME generation to avoid + * unexpected wakeups or hangs. OS will re-enable it via ACPI. + */ + outb(0, SCH5545_RUNTIME_REG_BASE + SCH5545_RR_PME_EN); + outb(1, SCH5545_RUNTIME_REG_BASE + SCH5545_RR_PME_STS); + /* Configure EMI */ dev = PNP_DEV(port, SCH5545_LDN_LPC); pnp_set_logical_device(dev); |