diff options
| author | Matt Papageorge <matthewpapa07@gmail.com> | 2021-05-19 10:04:27 -0500 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2021-05-21 06:35:26 +0000 |
| commit | d981c49038024cc9679114b92cadec51308b9ba8 (patch) | |
| tree | 476682fdd8c630b4e01f8a4d64f3b38985a468ed /src/mainboard/google/mancomb | |
| parent | c46bb694955ba80f054bd5770afafbbb929472f6 (diff) | |
mb/google/mancomb: Enable some PCIe power saving features
Enable ASPM, Common Clock and Clock Power Managment. Accomplish this
by adding the options in the platform Kconfig as well as dxio
descriptors.
BUG=b:187743927
TEST=Boot to ChromeOS and see ASPM, CC and Clock PM enabled with lspci
Change-Id: I9d6e606763798afc6b797d7d24ee7cae09f9e33f
Signed-off-by: Matt Papageorge <matthewpapa07@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54681
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard/google/mancomb')
| -rw-r--r-- | src/mainboard/google/mancomb/Kconfig | 3 | ||||
| -rw-r--r-- | src/mainboard/google/mancomb/port_descriptors.c | 4 |
2 files changed, 7 insertions, 0 deletions
diff --git a/src/mainboard/google/mancomb/Kconfig b/src/mainboard/google/mancomb/Kconfig index 3d798efe4c..de17454ee9 100644 --- a/src/mainboard/google/mancomb/Kconfig +++ b/src/mainboard/google/mancomb/Kconfig @@ -28,6 +28,9 @@ config BOARD_SPECIFIC_OPTIONS select MAINBOARD_HAS_CHROMEOS select MAINBOARD_HAS_I2C_TPM_CR50 select MAINBOARD_HAS_TPM2 + select PCIEXP_ASPM + select PCIEXP_CLK_PM + select PCIEXP_COMMON_CLOCK select PSP_DISABLE_POSTCODES select SOC_AMD_CEZANNE select SOC_AMD_COMMON_BLOCK_USE_ESPI diff --git a/src/mainboard/google/mancomb/port_descriptors.c b/src/mainboard/google/mancomb/port_descriptors.c index b992906c9b..30996e951e 100644 --- a/src/mainboard/google/mancomb/port_descriptors.c +++ b/src/mainboard/google/mancomb/port_descriptors.c @@ -12,6 +12,7 @@ static const fsp_dxio_descriptor mancomb_czn_dxio_descriptors[] = { .end_logical_lane = 0, .device_number = 2, .function_number = 1, + .link_aspm = ASPM_L1, .turn_off_unused_lanes = true, .clk_req = CLK_REQ0, .gpio_group_id = GPIO_29, @@ -24,6 +25,7 @@ static const fsp_dxio_descriptor mancomb_czn_dxio_descriptors[] = { .end_logical_lane = 1, .device_number = 2, .function_number = 2, + .link_aspm = ASPM_L1, .turn_off_unused_lanes = true, .clk_req = CLK_REQ1, .gpio_group_id = GPIO_70, @@ -36,6 +38,7 @@ static const fsp_dxio_descriptor mancomb_czn_dxio_descriptors[] = { .end_logical_lane = 2, .device_number = 2, .function_number = 3, + .link_aspm = ASPM_L1, .turn_off_unused_lanes = true, .clk_req = CLK_REQ2, .gpio_group_id = GPIO_18, @@ -48,6 +51,7 @@ static const fsp_dxio_descriptor mancomb_czn_dxio_descriptors[] = { .end_logical_lane = 7, .device_number = 2, .function_number = 4, + .link_aspm = ASPM_L1, .turn_off_unused_lanes = true, .clk_req = CLK_REQ3, .gpio_group_id = GPIO_40, |