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| author | Vijay Hiremath <vijay.p.hiremath@intel.com> | 2020-08-18 12:01:01 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-08-19 23:59:28 +0000 |
| commit | 386b25657e3a2224d0dbecbaafeec54ab9ea1f73 (patch) | |
| tree | 77b4b08928b2630a375851b214d361141abbc79e /board/tglrvpu_ite | |
| parent | bb20158f5c2c837a6e780672add4fd49bebb833c (diff) | |
| download | chrome-ec-386b25657e3a2224d0dbecbaafeec54ab9ea1f73.tar.gz | |
BB retimer: Remove FORCE_PWR GPIO from EC driver
FORCE_PWR GPIO is used for keeping the BB retimer in active state during
f/w updating. On TGLRVP, control to enable the FORCE_PWR GPIO was given
to EC to support the I2C based F/W updating. I2C based f/w updating is
deprecated and the LSx interface is POR hence the FORCE_PWR GPIO control
is given to AP now. Thus, removing the FORCE_PWR GPIO from EC driver.
BUG=b:165214747
BRANCH=none
TEST=make buildall -j
Change-Id: If9bb7199a68c93f704f698552e5594a58bd68f7c
Signed-off-by: Vijay Hiremath <vijay.p.hiremath@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2363334
Reviewed-by: Ayushee Shah <ayushee.shah@intel.com>
Reviewed-by: Keith Short <keithshort@chromium.org>
Diffstat (limited to 'board/tglrvpu_ite')
| -rw-r--r-- | board/tglrvpu_ite/board.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/board/tglrvpu_ite/board.c b/board/tglrvpu_ite/board.c index 888b893d03..aa4ff77e96 100644 --- a/board/tglrvpu_ite/board.c +++ b/board/tglrvpu_ite/board.c @@ -5,6 +5,7 @@ /* Intel TGL-U-RVP-ITE board-specific configuration */ +#include "bb_retimer.h" #include "button.h" #include "charger.h" #include "driver/charger/isl9241.h" @@ -155,3 +156,46 @@ int board_get_version(void) return board_id | (fab_id << 8); } + +__override void bb_retimer_power_handle(const struct usb_mux *me, int on_off) +{ + const struct bb_usb_control *control = &bb_controls[me->usb_port]; + + /* + * LSx based F/W updating is a POR, however to avoid the rework on + * RVP retain the FORCE_PWR GPIO with EC. + */ + enum gpio_signal force_power_gpio = me->usb_port ? + GPIO_USB_C1_RETIMER_FORCE_PWR : GPIO_USB_C0_RETIMER_FORCE_PWR; + + /* handle retimer's power domain */ + if (on_off) { + gpio_set_level(control->usb_ls_en_gpio, 1); + /* + * Tpw, minimum time from VCC to RESET_N de-assertion is 100us. + * For boards that don't provide a load switch control, the + * retimer_init() function ensures power is up before calling + * this function. + */ + msleep(1); + gpio_set_level(control->retimer_rst_gpio, 1); + msleep(10); + gpio_set_level(force_power_gpio, 1); + + /* + * If BB retimer NVM is shared between multiple ports, allow + * 40ms time for all the retimers to be initialized. + * Else allow 20ms to initialize. + */ + if (control->shared_nvm) + msleep(40); + else + msleep(20); + } else { + gpio_set_level(force_power_gpio, 0); + msleep(1); + gpio_set_level(control->retimer_rst_gpio, 0); + msleep(1); + gpio_set_level(control->usb_ls_en_gpio, 0); + } +} |