diff options
Diffstat (limited to 'driver/tcpm/it83xx.c')
| -rw-r--r-- | driver/tcpm/it83xx.c | 32 |
1 files changed, 22 insertions, 10 deletions
diff --git a/driver/tcpm/it83xx.c b/driver/tcpm/it83xx.c index 8e6abbc15b..3327cfdfed 100644 --- a/driver/tcpm/it83xx.c +++ b/driver/tcpm/it83xx.c @@ -47,22 +47,34 @@ const struct usbpd_ctrl_t usbpd_ctrl_regs[] = { BUILD_ASSERT(ARRAY_SIZE(usbpd_ctrl_regs) == IT83XX_USBPD_PHY_PORT_COUNT); /* - * This function disables integrated pd module and enables 5.1K resistor for - * dead battery. A EC reset or calling _init() is able to re-active pd module. + * Disable cc analog and pd digital module, but only left Rd_5.1K (Not + * Dead Battery) analog module alive to assert Rd on CCs. EC reset or + * calling _init() are able to re-active cc and pd. */ -void it83xx_disable_pd_module(int port) +void it83xx_Rd_5_1K_only_for_hibernate(int port) { - /* This only apply to PD port. */ + /* This only apply to active PD port */ if (*usbpd_ctrl_regs[port].cc1 == IT83XX_USBPD_CC_PIN_CONFIG && *usbpd_ctrl_regs[port].cc2 == IT83XX_USBPD_CC_PIN_CONFIG) { /* Disable PD PHY */ IT83XX_USBPD_GCR(port) &= ~(BIT(0) | BIT(4)); - /* Power down CC1/CC2 */ - IT83XX_USBPD_CCGCR(port) |= 0x1f; - /* Disable CC1/CC2 voltage detector */ - IT83XX_USBPD_CCCSR(port) = 0xff; - /* Connect 5.1K resistor to CC1/CC2 for dead battery. */ - IT83XX_USBPD_CCPSR(port) = 0x33; + /* + * Disable CCs voltage detector, and + * connect CCs analog module (ex.UP/RD/DET/TX/RX), and + * connect CCs 5.1K to GND + */ + IT83XX_USBPD_CCCSR(port) = 0x22; + /* Disconnect CCs 5V tolerant */ + IT83XX_USBPD_CCPSR(port) |= + (USBPD_REG_MASK_DISCONNECT_POWER_CC2 | + USBPD_REG_MASK_DISCONNECT_POWER_CC1); + /* + * Select Rp reserved value for not current leakage, and + * CCs assert Rd, and + * enable CCs analog module + */ + IT83XX_USBPD_BMCSR(port) &= ~0x08; + IT83XX_USBPD_CCGCR(port) &= ~0x1f; } } |