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| author | Matt Papageorge <matthewpapa07@gmail.com> | 2021-05-13 15:59:57 -0500 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2021-05-21 06:35:17 +0000 |
| commit | c46bb694955ba80f054bd5770afafbbb929472f6 (patch) | |
| tree | b627535399a7341925be6a3e4e60516df9a15f1f | |
| parent | 76619b01c84ba2db62310da311de4cf8271154f9 (diff) | |
| download | coreboot-c46bb694955ba80f054bd5770afafbbb929472f6.tar.xz | |
mb/google/guybrush: 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: Iefc4b5b489cb8caf59f21dd4333d7af66ba47c32
Signed-off-by: Matt Papageorge <matthewpapa07@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54282
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
| -rw-r--r-- | src/mainboard/google/guybrush/Kconfig | 3 | ||||
| -rw-r--r-- | src/mainboard/google/guybrush/port_descriptors.c | 4 |
2 files changed, 7 insertions, 0 deletions
diff --git a/src/mainboard/google/guybrush/Kconfig b/src/mainboard/google/guybrush/Kconfig index 5326616edb..0e7d15e755 100644 --- a/src/mainboard/google/guybrush/Kconfig +++ b/src/mainboard/google/guybrush/Kconfig @@ -32,6 +32,9 @@ 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/guybrush/port_descriptors.c b/src/mainboard/google/guybrush/port_descriptors.c index cc1fa1a7b2..540d3d19a7 100644 --- a/src/mainboard/google/guybrush/port_descriptors.c +++ b/src/mainboard/google/guybrush/port_descriptors.c @@ -13,6 +13,7 @@ static const fsp_dxio_descriptor guybrush_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, @@ -25,6 +26,7 @@ static const fsp_dxio_descriptor guybrush_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, @@ -37,6 +39,7 @@ static const fsp_dxio_descriptor guybrush_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, @@ -49,6 +52,7 @@ static const fsp_dxio_descriptor guybrush_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, |