diff options
| -rw-r--r-- | src/mainboard/google/gru/mainboard.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/mainboard/google/gru/mainboard.c b/src/mainboard/google/gru/mainboard.c index 0b55e7faf7..d34a9f730a 100644 --- a/src/mainboard/google/gru/mainboard.c +++ b/src/mainboard/google/gru/mainboard.c @@ -237,9 +237,17 @@ static void setup_usb(void) /* Set max ODT compensation voltage and current tuning reference. */ write32(&rk3399_grf->usbphy0_ctrl[3], 0x0fff02e3); write32(&rk3399_grf->usbphy1_ctrl[3], 0x0fff02e3); - /* Set max pre-emphasis level, only on Kevin PHY0. */ - if (IS_ENABLED(CONFIG_BOARD_GOOGLE_KEVIN)) + /* Set max pre-emphasis level, only on Kevin PHY0 and PHY1, + * and disable the pre-emphasize in eop state to avoid + * mis-trigger the disconnect detection. */ + if (IS_ENABLED(CONFIG_BOARD_GOOGLE_KEVIN)) { write32(&rk3399_grf->usbphy0_ctrl[12], 0xffff00a7); + write32(&rk3399_grf->usbphy1_ctrl[12], 0xffff00a7); + write32(&rk3399_grf->usbphy0_ctrl[0], 0x00010000); + write32(&rk3399_grf->usbphy1_ctrl[0], 0x00010000); + write32(&rk3399_grf->usbphy0_ctrl[13], 0x00010000); + write32(&rk3399_grf->usbphy1_ctrl[13], 0x00010000); + } setup_usb_otg0(); setup_usb_otg1(); |