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servo_v4: allow gpio modification of DUT_HUB_USB_RESET_L

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DUT_HUB_USB_RESET_L was set to input as part of power sequencing
but servod would like to write to it. We'll allow this.

BUG=chromium:571476
TEST=dut-control dut_hub_usb_reset:on
BRANCH=None

Change-Id: I39997e7f7875b833a64f95a1e2ea9434f3523762
Signed-off-by: Nick Sanders <nsanders@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/378395
Reviewed-by: Kevin Cheng <kevcheng@chromium.org>
This commit is contained in:
Nick Sanders
2016-08-30 14:44:59 -07:00
committed by chrome-bot
parent 6580e7f1a9
commit 239eecc52c
2 changed files with 4 additions and 1 deletions
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2
board/servo_v4/board.c
View File

@@ -242,7 +242,7 @@ static void board_init(void)
/* Delay DUT hub to avoid brownout. */
usleep(1000);
gpio_set_flags(GPIO_DUT_HUB_USB_RESET_L, GPIO_INPUT);
gpio_set_flags(GPIO_DUT_HUB_USB_RESET_L, GPIO_OUT_HIGH);
/* Write USB3 Mode Enable to PS8742 USB/DP Mux. */
i2c_write8(1, 0x20, 0x0, 0x20);

3
board/servo_v4/gpio.inc
View File

@@ -13,6 +13,9 @@ GPIO(HOST_USB_HUB_RESET_L, PIN(D, 2), GPIO_OUT_HIGH)
GPIO(FASTBOOT_DUTHUB_MUX_SEL, PIN(B, 5), GPIO_OUT_HIGH)
GPIO(SBU_MUX_EN, PIN(B, 6), GPIO_OUT_LOW)
GPIO(FASTBOOT_DUTHUB_MUX_EN_L, PIN(B, 7), GPIO_OUT_LOW)
/* Power on init has reset asserted, we will pull the hub out of reset
* in the board init to help avoid brownout.
*/
GPIO(DUT_HUB_USB_RESET_L, PIN(B, 9), GPIO_OUT_LOW)
GPIO(ATMEL_HWB_L, PIN(B, 12), GPIO_OUT_HIGH)
GPIO(CMUX_EN, PIN(C, 14), GPIO_OUT_HIGH)