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| author | Vijay Hiremath <vijay.p.hiremath@intel.com> | 2020-08-20 20:28:52 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-08-25 18:54:34 +0000 |
| commit | e8873c81d0ea3ee44a649ec8cbc362a44459d373 (patch) | |
| tree | bb827fa67b32fa81d837f7b7c8c48ad07aefe25a /board/voxel/board.c | |
| parent | 81f396b4576d0ab6535dcbb0d06d76caa12d34ea (diff) | |
| download | chrome-ec-e8873c81d0ea3ee44a649ec8cbc362a44459d373.tar.gz | |
bb retimer: Use mutex to lock the access to shared NVM
If the BB retimer has a shared NVM we need 40ms delay after releasing
the RESET line to synchronize, load and initialize both the retimers.
On a non-shared NVM we need 20ms delay to load and initialize. In order
to synchronize, instead of 40ms delay this CL uses a MUTEX to lock
the access of another retimer by not releasing the RESET line until the
first retimer completes initialization.
BUG=b:165895649
BRANCH=none
TEST=Tested on volteer(non shared NVM), tglrvpu_ite (shared NVM)
Retimer is able to initialize (DP, USB, TBT, USB4 are detected)
Change-Id: I709377c2e6401faa26871289143d71665ee516d1
Signed-off-by: Vijay Hiremath <vijay.p.hiremath@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2368223
Reviewed-by: Keith Short <keithshort@chromium.org>
Diffstat (limited to 'board/voxel/board.c')
| -rw-r--r-- | board/voxel/board.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/board/voxel/board.c b/board/voxel/board.c index 66015c522d..a46bf3ee83 100644 --- a/board/voxel/board.c +++ b/board/voxel/board.c @@ -236,7 +236,6 @@ __override void board_cbi_init(void) setup_mux(); /* Reassign USB_C0_RT_RST_ODL */ - bb_controls[USBC_PORT_C0].shared_nvm = false; bb_controls[USBC_PORT_C0].usb_ls_en_gpio = GPIO_USB_C0_LS_EN; bb_controls[USBC_PORT_C0].retimer_rst_gpio = GPIO_USB_C0_RT_RST_ODL; } |