scottk/OpenCellular
1
0
Fork 0
mirror of https://github.com/Telecominfraproject/OpenCellular.git synced 2026-01-10 17:41:54 +00:00
Code Issues Packages Projects Releases Wiki Activity

Snappy: clear hpd bit in board level tcpc init

Browse Source 
PD alternate mode is covered in tcpc interface. So tcpci_tcpm_init()
doesn't reset HPD. If keeping HDMI/DP type-C cable connected, doing
sysjump sets HPD signal to high while it's already high(this high comes
from previous state), then OS doesn't output to HDMI/DP monitor.

BUG=None
BRANCH=none
TEST=make buildall

Change-Id: I9b23cee82716d9073c98b6b53a0e54d587baf0ea
Signed-off-by: Bruce.Wan <Bruce.Wan@quantatw.com>
Reviewed-on: https://chromium-review.googlesource.com/409732
Commit-Ready: Devin Lu <Devin.Lu@quantatw.com>
Tested-by: Devin Lu <Devin.Lu@quantatw.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Bruce
2016-11-10 17:18:03 +08:00
committed by chrome-bot
parent 35ad88f618
commit 41dea76433
1 changed files with 12 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
board/snappy/board.c
View File

@@ -301,6 +301,8 @@ void board_print_tcpc_fw_version(int port)
void board_tcpc_init(void)
{
int port;
/* Only reset TCPC if not sysjump */
if (!system_jumped_to_this_image())
board_reset_pd_mcu();
@@ -310,6 +312,16 @@ void board_tcpc_init(void)
/* Enable TCPC1 interrupt */
gpio_enable_interrupt(GPIO_USB_C1_PD_INT_ODL);
/*
* Initialize HPD to low; after sysjump SOC needs to see
* HPD pulse to enable video path
*/
for (port = 0; port < CONFIG_USB_PD_PORT_COUNT; port++) {
const struct usb_mux *mux = &usb_muxes[port];
mux->hpd_update(port, 0, 0);
}
}
DECLARE_HOOK(HOOK_INIT, board_tcpc_init, HOOK_PRIO_INIT_I2C+1);