mb/system76: Enable DRIVERS_GENERIC_BAYHUB_LV2 to fix LTR issue
Clevo started using OZ711LV2 for the SD card reader around the time of
making its TGL boards. Without the driver, CPUs don't go to power states
lower than C2 due to LTR not being programmed. After enabling the driver
the CPU will go to C8 while the system is idle, giving significant power
savings if the system is left on battery power.
There is another issue with RPL where it only goes to C6 instead of C8.
This may be due to the intel_idle driver in Linux (as of 6.5-rc6
mainline and 6.4.6 stable) not supporting RPL C-states.
- tgl: Started being used with the Gazelle 3060 variant
- adl: Used on all models
- rpl: bonw15 does not have an SD card reader
Change-Id: I85c60feb6dcae7d877e70a6c6f2d3a7b3296fa0e
Signed-off-by: Jeremy Soller <jeremy@system76.com>
Signed-off-by: Tim Crawford <tcrawford@system76.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77278
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/system76/adl/Kconfig b/src/mainboard/system76/adl/Kconfig
index dd692be..17e9849 100644
--- a/src/mainboard/system76/adl/Kconfig
+++ b/src/mainboard/system76/adl/Kconfig
@@ -1,6 +1,7 @@
config BOARD_SYSTEM76_ADL_COMMON
def_bool n
select BOARD_ROMSIZE_KB_32768
+ select DRIVERS_GENERIC_BAYHUB_LV2
select DRIVERS_GENERIC_CBFS_SERIAL
select DRIVERS_GENERIC_CBFS_UUID
select DRIVERS_I2C_HID
diff --git a/src/mainboard/system76/rpl/Kconfig b/src/mainboard/system76/rpl/Kconfig
index 2037256..d654696 100644
--- a/src/mainboard/system76/rpl/Kconfig
+++ b/src/mainboard/system76/rpl/Kconfig
@@ -1,6 +1,7 @@
config BOARD_SYSTEM76_RPL_COMMON
def_bool n
select BOARD_ROMSIZE_KB_32768
+ select DRIVERS_GENERIC_BAYHUB_LV2 if !BOARD_SYSTEM76_BONW15
select DRIVERS_GENERIC_CBFS_SERIAL
select DRIVERS_GENERIC_CBFS_UUID
select DRIVERS_I2C_HID
diff --git a/src/mainboard/system76/tgl-h/Kconfig b/src/mainboard/system76/tgl-h/Kconfig
index 9fd2ee2..bd5210a 100644
--- a/src/mainboard/system76/tgl-h/Kconfig
+++ b/src/mainboard/system76/tgl-h/Kconfig
@@ -3,6 +3,7 @@
config BOARD_SPECIFIC_OPTIONS
def_bool y
select BOARD_ROMSIZE_KB_16384
+ select DRIVERS_GENERIC_BAYHUB_LV2 if BOARD_SYSTEM76_GAZE16_3060 || BOARD_SYSTEM76_GAZE16_3060_B
select DRIVERS_GENERIC_CBFS_SERIAL
select DRIVERS_GENERIC_CBFS_UUID
select DRIVERS_I2C_HID