diff options
Diffstat (limited to 'src/southbridge/intel')
| -rw-r--r-- | src/southbridge/intel/lynxpoint/Kconfig | 9 | ||||
| -rw-r--r-- | src/southbridge/intel/lynxpoint/lpc.c | 2 |
2 files changed, 11 insertions, 0 deletions
diff --git a/src/southbridge/intel/lynxpoint/Kconfig b/src/southbridge/intel/lynxpoint/Kconfig index eea0c01043..7615e69cc3 100644 --- a/src/southbridge/intel/lynxpoint/Kconfig +++ b/src/southbridge/intel/lynxpoint/Kconfig @@ -96,4 +96,13 @@ config LOCK_MANAGEMENT_ENGINE bool default n +config LYNXPOINT_POWER_OPTIMIZER + bool "Enable Power Optimizer" + default y if CHROMEOS + help + Enable the power optimizer for the High Speed I/O + Power Control (HSIOPC). This can break graphics + under Windows, but can improve battery life under + 'mostly idle' conditions. + endif diff --git a/src/southbridge/intel/lynxpoint/lpc.c b/src/southbridge/intel/lynxpoint/lpc.c index f4c3826aa9..1d20bbbe3b 100644 --- a/src/southbridge/intel/lynxpoint/lpc.c +++ b/src/southbridge/intel/lynxpoint/lpc.c @@ -346,6 +346,7 @@ const struct rcba_config_instruction lpt_lp_pm_rcba[] = { RCBA_RMW_REG_32(0x33b4, 0, 0x00007001), RCBA_RMW_REG_32(0x3350, 0, 0x022ddfff), RCBA_RMW_REG_32(0x3354, 0, 0x00000001), +#if IS_ENABLED(CONFIG_LYNXPOINT_POWER_OPTIMIZER) RCBA_RMW_REG_32(0x33d4, ~0, 0x08000000), /* Power Optimizer */ RCBA_RMW_REG_32(0x33c8, ~0, 0x08000080), /* Power Optimizer */ RCBA_RMW_REG_32(0x2b10, 0, 0x0000883c), /* Power Optimizer */ @@ -353,6 +354,7 @@ const struct rcba_config_instruction lpt_lp_pm_rcba[] = { RCBA_RMW_REG_32(0x2b24, 0, 0x40000005), /* Power Optimizer */ RCBA_RMW_REG_32(0x2b20, 0, 0x0005db01), /* Power Optimizer */ RCBA_RMW_REG_32(0x3a80, 0, 0x05145005), +#endif RCBA_END_CONFIG }; |