diff options
| author | Boris Mittelberg <bmbm@google.com> | 2022-12-12 15:34:59 -0800 |
|---|---|---|
| committer | Chromeos LUCI <chromeos-scoped@luci-project-accounts.iam.gserviceaccount.com> | 2023-01-10 21:01:15 +0000 |
| commit | f7a5b61656cf545e8ce036100a15ce16f8a4644c (patch) | |
| tree | f61ca25b8f9acfa8c00e5414a6f2f6842ec86a03 | |
| parent | 2132a0c4d3190b578e1ac566ba31bad744dda436 (diff) | |
| download | chrome-ec-f7a5b61656cf545e8ce036100a15ce16f8a4644c.tar.gz | |
dratini: Set TCPC_AUX_SWITCH to 0xC on Port 0 on mux set
When the screen brightness is changed, DP sends signal on AUX channel.
This causes CCD mode to be disconnected.
This patch sets the MUX to aux+ <-> sbu2, aux- <-> sbu1 to fix it.
BUG=b:183123775
BRANCH=main,firmware-hatch-12672.B
TEST=manually verify servod doesn't exit when screen turns off due
to the device being idle for 8 minutes on dragonair
Change-Id: I2c8761f81252d87d7aca4878023fb4db3d73812a
Signed-off-by: Boris Mittelberg <bmbm@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/4126661
Reviewed-by: Mary Ruthven <mruthven@chromium.org>
| -rw-r--r-- | board/dratini/board.c | 20 | ||||
| -rw-r--r-- | board/dratini/gpio.inc | 3 |
2 files changed, 23 insertions, 0 deletions
diff --git a/board/dratini/board.c b/board/dratini/board.c index 87df7d3dfd..e50d168dca 100644 --- a/board/dratini/board.c +++ b/board/dratini/board.c @@ -164,9 +164,29 @@ const struct tcpc_config_t tcpc_config[CONFIG_USB_PD_PORT_MAX_COUNT] = { }, }; +/* Set aux switch to 0xc when CCD enabled on port C0 */ +static int board_anx7447_mux_set_c0(int port, mux_state_t mux_state) +{ + int rv = EC_SUCCESS; + + if (port != USB_PD_PORT_TCPC_0) + return rv; + + if (gpio_get_level(GPIO_CCD_MODE_ODL)) + return rv; + + CPRINTS("C%d: set AUX_SW_SEL=0x%x", port, 0xc); + rv = tcpc_write(port, ANX7447_REG_TCPC_AUX_SWITCH, 0xc); + if (rv) + CPRINTS("C%d: Setting AUX_SW_SEL failed", port); + + return rv; +} + struct usb_mux usb_muxes[CONFIG_USB_PD_PORT_MAX_COUNT] = { [USB_PD_PORT_TCPC_0] = { .driver = &anx7447_usb_mux_driver, + .board_set = &board_anx7447_mux_set_c0, .hpd_update = &anx7447_tcpc_update_hpd_status, }, [USB_PD_PORT_TCPC_1] = { diff --git a/board/dratini/gpio.inc b/board/dratini/gpio.inc index 1d83a9813a..30d621d1c9 100644 --- a/board/dratini/gpio.inc +++ b/board/dratini/gpio.inc @@ -79,6 +79,9 @@ GPIO(USB_C1_TCPC_RST_ODL, PIN(3, 2), GPIO_ODR_HIGH) GPIO(EN_USB_A_5V, PIN(3, 5), GPIO_OUT_LOW) GPIO(EN_USB_A_LOW_PWR_OD, PIN(9, 4), GPIO_OUT_LOW) +/* CCD mode line*/ +GPIO(CCD_MODE_ODL, PIN(E, 5), GPIO_INPUT) + /* Misc Signals */ GPIO(EC_BATT_PRES_ODL, PIN(E, 1), GPIO_INPUT) GPIO(LED_AMBER_C0_L, PIN(C, 4), GPIO_OUT_HIGH) /* Amber C0 port */ |