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| author | Edward Hill <ecgh@chromium.org> | 2020-06-02 18:28:26 -0600 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-06-03 05:39:13 +0000 |
| commit | 5124d453200ce13dfd8badfcd2c56e57334df2df (patch) | |
| tree | b397b594cf13c79c77beeebf7bb7ec5b2c03bb86 /board/ezkinil | |
| parent | ce804f34ccb7c65fc4711c01eac63ceb8c008e26 (diff) | |
| download | chrome-ec-5124d453200ce13dfd8badfcd2c56e57334df2df.tar.gz | |
Zork: Switch PS8743 from IOEX_USB_C1_DATA_EN to I2C
Align all Zork devices on using I2C control of PS8743 mux mode, and stop
using IOEX_USB_C1_DATA_EN signal/pin. This matches what we were already
doing for Dalboz, and gives power savings in both S0 and S3 when nothing
is plugged in and mux is set to none.
BUG=b:157951317
BRANCH=none
TEST=external display and i2ctrace on ezkinil
Signed-off-by: Edward Hill <ecgh@chromium.org>
Change-Id: Id1c8b172a99bb25bed8b57e90686d933447432f2
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2227589
Reviewed-by: Denis Brockus <dbrockus@chromium.org>
Commit-Queue: Denis Brockus <dbrockus@chromium.org>
Diffstat (limited to 'board/ezkinil')
| -rw-r--r-- | board/ezkinil/board.c | 25 |
1 files changed, 4 insertions, 21 deletions
diff --git a/board/ezkinil/board.c b/board/ezkinil/board.c index 330322eef7..d3e5e15e5e 100644 --- a/board/ezkinil/board.c +++ b/board/ezkinil/board.c @@ -269,31 +269,14 @@ static int board_tusb544_mux_set(const struct usb_mux *me, static int board_ps8743_mux_set(const struct usb_mux *me, mux_state_t mux_state) { - int rv = EC_SUCCESS; - int reg = 0; - - rv = ps8743_read(me, PS8743_REG_MODE, ®); - if (rv) - return rv; - - /* Disable FLIP pin, enable I2C control. */ - reg |= PS8743_MODE_FLIP_REG_CONTROL; - /* Disable CE_DP pin, enable I2C control. */ - reg |= PS8743_MODE_DP_REG_CONTROL; - - /* DP specific config */ - if (mux_state & USB_PD_MUX_DP_ENABLED) { + if (mux_state & USB_PD_MUX_DP_ENABLED) /* Enable IN_HPD on the DB */ ioex_set_level(IOEX_USB_C1_HPD_IN_DB, 1); - /* Disable USB mode on DB */ - ioex_set_level(IOEX_USB_C1_DATA_EN, 0); - } else { + else /* Disable IN_HPD on the DB */ ioex_set_level(IOEX_USB_C1_HPD_IN_DB, 0); - /* Enable USB mode on DB */ - ioex_set_level(IOEX_USB_C1_DATA_EN, 1); - } - return ps8743_write(me, PS8743_REG_MODE, reg); + + return EC_SUCCESS; } const struct usb_mux usbc1_tusb544 = { |