diff options
Diffstat (limited to 'drivers/i2c/Kconfig')
| -rw-r--r-- | drivers/i2c/Kconfig | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig index e861b53686..9a62ddd9ca 100644 --- a/drivers/i2c/Kconfig +++ b/drivers/i2c/Kconfig @@ -29,6 +29,19 @@ config I2C_CROS_EC_TUNNEL I2C or LPC). Some Chromebooks use this when the hardware design does not allow direct access to the main PMIC from the AP. +config I2C_CROS_EC_LDO + bool "Provide access to LDOs on the Chrome OS EC" + depends on CROS_EC + ---help--- + On many Chromebooks the main PMIC is inaccessible to the AP. This is + often dealt with by using an I2C pass-through interface provided by + the EC. On some unfortunate models (e.g. Spring) the pass-through + is not available, and an LDO message is available instead. This + option enables a driver which provides very basic access to those + regulators, via the EC. We implement this as an I2C bus which + emulates just the TPS65090 messages we know about. This is done to + avoid duplicating the logic in the TPS65090 regulator driver for + enabling/disabling an LDO. config DM_I2C_GPIO bool "Enable Driver Model for software emulated I2C bus driver" |
