diff options
| author | Rex-BC Chen <rex-bc.chen@mediatek.corp-partner.google.com> | 2021-12-13 19:43:17 +0800 |
|---|---|---|
| committer | Hung-Te Lin <hungte@chromium.org> | 2021-12-15 07:52:34 +0000 |
| commit | add2e930505be3470092774f595cdb8b3ff61ef2 (patch) | |
| tree | 65e725d6581117181127d32f109fd19f8f6b5f9a /src/mainboard | |
| parent | 0fd072d3f2a3360d73ec7b5b11a06b52025b17ea (diff) | |
mb/google/corsola: move USB3 HUB reset funtion to bootblock
To save the S3 power, USB3_HUB_RST_L is externally pulled up to a weak
resistor, so we have to reset the hub as early as possible.
Otherwise the USB3 hub may be not usable. Therefore, move USB3 HUB
reset function to bootblock.
BUG=b:210065282
TEST=build pass
Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Change-Id: I92feb2316302fda32478b24c014bcd380d0ac55d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/60088
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/google/corsola/bootblock.c | 7 | ||||
| -rw-r--r-- | src/mainboard/google/corsola/gpio.h | 1 |
2 files changed, 8 insertions, 0 deletions
diff --git a/src/mainboard/google/corsola/bootblock.c b/src/mainboard/google/corsola/bootblock.c index 71f1d3687d..87b972d59c 100644 --- a/src/mainboard/google/corsola/bootblock.c +++ b/src/mainboard/google/corsola/bootblock.c @@ -2,10 +2,16 @@ #include <bootblock_common.h> #include <device/mmio.h> +#include <gpio.h> #include <soc/spi.h> #include "gpio.h" +static void usb3_hub_reset(void) +{ + gpio_output(GPIO_USB3_HUB_RST_L, 1); +} + void bootblock_mainboard_init(void) { mtk_spi_init(CONFIG_EC_GOOGLE_CHROMEEC_SPI_BUS, SPI_PAD0_MASK, 3 * MHz, 0); @@ -13,4 +19,5 @@ void bootblock_mainboard_init(void) mtk_snfc_init(SPI_NOR_GPIO_SET1); setup_chromeos_gpios(); gpio_eint_configure(GPIO_GSC_AP_INT_ODL, IRQ_TYPE_EDGE_RISING); + usb3_hub_reset(); } diff --git a/src/mainboard/google/corsola/gpio.h b/src/mainboard/google/corsola/gpio.h index 2c785645de..c2f789eae1 100644 --- a/src/mainboard/google/corsola/gpio.h +++ b/src/mainboard/google/corsola/gpio.h @@ -23,6 +23,7 @@ #define GPIO_RESET GPIO(PERIPHERAL_EN0) #define GPIO_XHCI_DONE GPIO(PERIPHERAL_EN1) +#define GPIO_USB3_HUB_RST_L GPIO(PERIPHERAL_EN2) #define GPIO_EN_SPK GPIO(PERIPHERAL_EN3) #define GPIO_BEEP_ON GPIO(PERIPHERAL_EN4) |