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mb/starlabs/lite: Enable enhanced C-states 

Tested on the StarLite Mk III & Mk IV with Zorin 16.2 Core. This
resulted in a reduction in power consumption of approximately 3%.

Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: I7b5f4e01bc786db02184b722c74fda7d0ca055be
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64709
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
This commit is contained in:
Sean Rhodes 2022-05-26 22:25:03 +01:00 committed by Felix Held
parent 9d894b8563
commit fe97c77cab
2 changed files with 4 additions and 0 deletions
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2
src/mainboard/starlabs/lite/variants/glk/devicetree.cb
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@ -25,6 +25,8 @@ chip soc/intel/apollolake
register "hdaudio_pwr_gate_enable" = "1" register "hdaudio_pwr_gate_enable" = "1"
register "hdaudio_bios_config_lockdown" = "1" register "hdaudio_bios_config_lockdown" = "1"
register "enhanced_cstates" = "1"
register "pnp_settings" = "PNP_PERF_POWER" register "pnp_settings" = "PNP_PERF_POWER"
register "ModPhyIfValue" = "0x12" register "ModPhyIfValue" = "0x12"

2
src/mainboard/starlabs/lite/variants/glkr/devicetree.cb
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@ -25,6 +25,8 @@ chip soc/intel/apollolake
register "hdaudio_pwr_gate_enable" = "1" register "hdaudio_pwr_gate_enable" = "1"
register "hdaudio_bios_config_lockdown" = "1" register "hdaudio_bios_config_lockdown" = "1"
register "enhanced_cstates" = "1"
register "pnp_settings" = "PNP_PERF_POWER" register "pnp_settings" = "PNP_PERF_POWER"
register "ModPhyIfValue" = "0x12" register "ModPhyIfValue" = "0x12"