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| author | Roy Mingi Park <roy.mingi.park@intel.com> | 2018-10-19 11:27:22 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-05-05 12:10:05 +0000 |
| commit | 58e54330d90e06e7b1d6fa8534062292f07ad085 (patch) | |
| tree | c8fce8714965784c4f626ac2adf36dab59355121 | |
| parent | 991730e2104525bd14a4b5307a9b3a6c4a874272 (diff) | |
| download | chrome-ec-58e54330d90e06e7b1d6fa8534062292f07ad085.tar.gz | |
CHERRY-PICK: Nocturne: Remove VR decay for V1.00A power rail
This patches removes the VR decay for V1.00A power rail when system
enters low power mode. According to PAG #543977, V1.00A power has
tolerance from -6.7% to 5% but it doesn't support LPM like VccPRIM_CORE
which could down to 0.75v in low power mode.
BUG=b:116180071
BRANCH=Nocturne
TEST=Measure V1.00A power rail when system is in S0iX and ensure it
keeps at 1.0v
Signed-off-by: Roy Mingi Park <roy.mingi.park@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/c/1291950
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-by: Puthikorn Voravootivat <puthik@chromium.org>
Commit-Queue: Aseda Aboagye <aaboagye@chromium.org>
Change-Id: Iefbf86c8d71794277ee6e7ae4bdca81617cd03fc
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2160871
Tested-by: Patryk Duda <pdk@semihalf.com>
Commit-Queue: Patryk Duda <pdk@semihalf.com>
| -rw-r--r-- | board/nocturne/board.c | 18 |
1 files changed, 0 insertions, 18 deletions
diff --git a/board/nocturne/board.c b/board/nocturne/board.c index f9a3d59525..3d8e9f9026 100644 --- a/board/nocturne/board.c +++ b/board/nocturne/board.c @@ -468,15 +468,6 @@ static void board_pmic_disable_slp_s0_vr_decay(void) i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x34, 0x2a); /* - * V100ACNT: - * Bits 7:6 (00) - Disable low power mode on SLP_S0# assertion - * Bits 5:4 (01) - Nominal voltage 1.0V - * Bits 3:2 (10) - VR set to AUTO on SLP_S0# de-assertion - * Bits 1:0 (10) - VR set to AUTO operating mode - */ - i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x37, 0x1a); - - /* * V085ACNT: * Bits 7:6 (00) - Disable low power mode on SLP_S0# assertion * Bits 5:4 (10) - Nominal voltage 0.85V @@ -507,15 +498,6 @@ static void board_pmic_enable_slp_s0_vr_decay(void) i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x34, 0x6a); /* - * V100ACNT: - * Bits 7:6 (01) - Enable low power mode on SLP_S0# assertion - * Bits 5:4 (01) - Nominal voltage 1.0V - * Bits 3:2 (10) - VR set to AUTO on SLP_S0# de-assertion - * Bits 1:0 (10) - VR set to AUTO operating mode - */ - i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x37, 0x5a); - - /* * V085ACNT: * Bits 7:6 (01) - Enable low power mode on SLP_S0# assertion * Bits 5:4 (10) - Nominal voltage 0.85V |