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| author | Ting Shen <phoenixshen@google.com> | 2021-12-23 15:32:16 +0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-12-23 11:27:58 +0000 |
| commit | 80ff7fbe29f93b85a48336ff05aa27a10f7a5a5f (patch) | |
| tree | d5ad29b66dc1462f17c0024f2befe87caa9c829e | |
| parent | d68d233fb3ec937678e77f27c5eca28ffb0f0d42 (diff) | |
| download | chrome-ec-80ff7fbe29f93b85a48336ff05aa27a10f7a5a5f.tar.gz | |
mt6360: enable high impedance mode to save power
MTK suggests enable HZ when VBUS ready.
See issue link for detail.
BUG=b:209549587
TEST=manually measure power consumption
BRANCH=none
Signed-off-by: Ting Shen <phoenixshen@google.com>
Change-Id: I01b44d9be78d4e670d28d96a5e6696ffe5009161
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3354410
Tested-by: Ting Shen <phoenixshen@chromium.org>
Auto-Submit: Ting Shen <phoenixshen@chromium.org>
Reviewed-by: Rong Chang <rongchang@chromium.org>
Commit-Queue: Rong Chang <rongchang@chromium.org>
| -rw-r--r-- | driver/bc12/mt6360.c | 10 | ||||
| -rw-r--r-- | driver/bc12/mt6360.h | 3 |
2 files changed, 12 insertions, 1 deletions
diff --git a/driver/bc12/mt6360.c b/driver/bc12/mt6360.c index e9fc769d5e..78d955fc9e 100644 --- a/driver/bc12/mt6360.c +++ b/driver/bc12/mt6360.c @@ -166,10 +166,18 @@ static void mt6360_usb_charger_task(const int port) /* vbus change, start bc12 detection */ if (evt & USB_CHG_EVENT_VBUS) { + bool is_sink = pd_get_power_role(port) == PD_ROLE_SINK; bool is_non_pd_sink = !pd_capable(port) && - pd_get_power_role(port) == PD_ROLE_SINK && + is_sink && pd_snk_is_vbus_provided(port); + if (is_sink) + mt6360_clr_bit(MT6360_REG_CHG_CTRL1, + MT6360_MASK_HZ); + else + mt6360_set_bit(MT6360_REG_CHG_CTRL1, + MT6360_MASK_HZ); + if (is_non_pd_sink) mt6360_enable_bc12_detection(1); else diff --git a/driver/bc12/mt6360.h b/driver/bc12/mt6360.h index e23a2623ed..781bed2f57 100644 --- a/driver/bc12/mt6360.h +++ b/driver/bc12/mt6360.h @@ -9,6 +9,9 @@ #define MT6360_IRQ_MASK 0x0C +#define MT6360_REG_CHG_CTRL1 0x11 +#define MT6360_MASK_HZ BIT(2) + #define MT6360_REG_DEVICE_TYPE 0x22 #define MT6360_MASK_USBCHGEN BIT(7) |