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mb/google/bluey: Configure sink sensor for DAM port

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Enable/disable the sink sensor for DAM port during power on/off.

BUG=b:491325845
TEST=Verify the configuration on power on/off on Google/Quartz.

Change-Id: Ib00e1cc1c86bafb19cde24c7faa624d3e6d00db8
Signed-off-by: Kapil Porwal <kapilporwal@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/91890
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Kapil Porwal 2026-03-27 01:46:49 +05:30 • committed by Matt DeVillier
commit f45d6e696a
3 changed files with 21 additions and 0 deletions
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1
src/mainboard/google/bluey/board.h
View file

@ -62,6 +62,7 @@ bool is_off_mode(void);
void configure_parallel_charging(void);
void configure_parallel_charging_late(void);
void configure_debug_access_port(void);
void configure_dam_on_system_state_change(bool poweron);
void enable_slow_battery_charging(void);
void disable_slow_battery_charging(void);
void launch_charger_applet(void);

19
src/mainboard/google/bluey/charging.c
View file

@ -30,6 +30,10 @@
#define SCHG_TYPE_C_SUSPEND_LEGACY_CHARGERS 0x2B90
#define SMB1_SCHG_TYPE_C_SUSPEND_LEGACY_CHARGERS \
((SMB1_SLAVE_ID << 16) | SCHG_TYPE_C_SUSPEND_LEGACY_CHARGERS)
#define SCHG_TYPE_C_TYPE_C_CRUDE_SENSOR_CFG 0x2B4E
#define SMB1_SCHG_TYPE_C_TYPE_C_CRUDE_SENSOR_CFG \
((SMB1_SLAVE_ID << 16) | SCHG_TYPE_C_TYPE_C_CRUDE_SENSOR_CFG)
#define SCHG_CHGR_CHARGING_FCC 0x260A
#define SMB1_CHGR_CHARGING_FCC ((SMB1_SLAVE_ID << 16) | SCHG_CHGR_CHARGING_FCC)
#define SMB2_CHGR_CHARGING_FCC ((SMB2_SLAVE_ID << 16) | SCHG_CHGR_CHARGING_FCC)
@ -64,6 +68,16 @@ enum charging_status {
CHRG_ENABLE,
};
void configure_dam_on_system_state_change(bool poweron)
{
uint8_t value = (uint8_t)spmi_read8(SMB1_SCHG_TYPE_C_TYPE_C_CRUDE_SENSOR_CFG);
if (poweron)
value |= BIT(0);
else
value &= ~BIT(0);
spmi_write8(SMB1_SCHG_TYPE_C_TYPE_C_CRUDE_SENSOR_CFG, value);
}
static int get_battery_icurr_ma(void)
{
/* Read battery i-current value */
@ -170,6 +184,7 @@ void launch_charger_applet(void)
if (detect_ac_unplug_event())
indicate_charging_status();
google_chromeec_offmode_heartbeat();
configure_dam_on_system_state_change(false);
google_chromeec_ap_poweroff();
}
mdelay(200);
@ -188,6 +203,7 @@ void launch_charger_applet(void)
if (detect_ac_unplug_event())
indicate_charging_status();
google_chromeec_offmode_heartbeat();
configure_dam_on_system_state_change(false);
google_chromeec_ap_poweroff();
}
@ -210,6 +226,7 @@ void launch_charger_applet(void)
if (has_crossed_threshold) {
printk(BIOS_INFO, "Issuing power-off due to temperature trip.\n");
google_chromeec_offmode_heartbeat();
configure_dam_on_system_state_change(false);
google_chromeec_ap_poweroff();
}
} while (true);
@ -237,6 +254,8 @@ void configure_parallel_charging(void)
*/
void configure_debug_access_port(void)
{
configure_dam_on_system_state_change(true);
if (!CONFIG(HAVE_DEBUG_ACCESS_PORT_SOURCE_SINK))
return;

1
src/mainboard/google/bluey/mainboard.c
View file

@ -178,6 +178,7 @@ static void trigger_critical_battery_shutdown(void)
platform_handle_emergency_low_battery();
configure_dam_on_system_state_change(false);
google_chromeec_ap_poweroff();
}