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| author | Diana Z <dzigterman@chromium.org> | 2021-06-25 11:50:18 -0600 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-07-07 16:44:10 +0000 |
| commit | c624651b90e6372eb846cdfcfc93f0b27ecc18f8 (patch) | |
| tree | 7e86c74e1c7c7eadcf4113be40bbbab0726f7338 /include/driver | |
| parent | 8fde798c826f4172f45cc86e773114010faf762e (diff) | |
| download | chrome-ec-c624651b90e6372eb846cdfcfc93f0b27ecc18f8.tar.gz | |
NCT3807: Set up correct FRS enable
The NCT3807 requires a few steps for FRS enablement. Specifically:
- Zero out VBUS_SINK_DISCONNECT_THRESHOLD
- Enable FRS interrupt (already done in TCPCI code)
- Set FRS enable to 1
Note that it should not use the TCPCI specification method of clearing
AutoDischargeDisconnect as soon as FRS is set. This results in the CC
lines immediately reading as Open.
BRANCH=None
BUG=b:183586640,b:192012189
TEST=on guybrush C0, confirm FRS can execute successfully with WooHubs,
HooToo, and Moshi
Signed-off-by: Diana Z <dzigterman@chromium.org>
Change-Id: Ida0d33ae9ce4b8660615a0b9f3064cf90f5ae3bd
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2987598
Reviewed-by: Denis Brockus <dbrockus@chromium.org>
Diffstat (limited to 'include/driver')
| -rw-r--r-- | include/driver/tcpm/tcpci.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/driver/tcpm/tcpci.h b/include/driver/tcpm/tcpci.h index 2bd9614123..cfe7513c31 100644 --- a/include/driver/tcpm/tcpci.h +++ b/include/driver/tcpm/tcpci.h @@ -232,7 +232,10 @@ #define TCPC_REG_TX_BUFFER 0x51 #define TCPC_REG_VBUS_VOLTAGE 0x70 + #define TCPC_REG_VBUS_SINK_DISCONNECT_THRESH 0x72 +#define TCPC_REG_VBUS_SINK_DISCONNECT_THRESH_DEFAULT 0x008C /* 3.5 V */ + #define TCPC_REG_VBUS_STOP_DISCHARGE_THRESH 0x74 #define TCPC_REG_VBUS_VOLTAGE_ALARM_HI_CFG 0x76 #define TCPC_REG_VBUS_VOLTAGE_ALARM_LO_CFG 0x78 |