[S] Change in coreboot[master]: mb/google/skyrim: Enable ASPM for SD

[Fred Reitberger (Code Review)]

Fred Reitberger has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/67304 )

Change subject: mb/google/skyrim: Enable ASPM for SD
......................................................................

mb/google/skyrim: Enable ASPM for SD

Enable ASPM for SD card reader to reduce power usage.

TEST=Boot to OS and verify ASPM is enabled via `lspci -s 02:00.0 -vvv |
grep ASPM`
BUG=b:243771794

Signed-off-by: Fred Reitberger 
Change-Id: I45a290c8ceddd39f65c6fe1390e3a753cad99899
---
M src/mainboard/google/skyrim/Kconfig
M src/mainboard/google/skyrim/port_descriptors.c
2 files changed, 19 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/04/67304/1

diff --git a/src/mainboard/google/skyrim/Kconfig b/src/mainboard/google/skyrim/Kconfig
index 03c9dfa..992a2e6 100644
--- a/src/mainboard/google/skyrim/Kconfig
+++ b/src/mainboard/google/skyrim/Kconfig
@@ -38,6 +38,7 @@
    select SOC_AMD_MENDOCINO
    select SOC_AMD_COMMON_BLOCK_USE_ESPI
    select TPM_GOOGLE_TI50
+	select PCIEXP_ASPM

config CHROMEOS
    select EC_GOOGLE_CHROMEEC_SWITCHES
diff --git a/src/mainboard/google/skyrim/port_descriptors.c b/src/mainboard/google/skyrim/port_descriptors.c
index ac64259..e03d1d5 100644
--- a/src/mainboard/google/skyrim/port_descriptors.c
+++ b/src/mainboard/google/skyrim/port_descriptors.c
@@ -28,6 +28,8 @@
    	.function_number = PCI_FUNC(SD_DEVFN),
    	.link_speed_capability = GEN3,
    	.turn_off_unused_lanes = true,
+		.link_aspm = 2,
+		.link_hotplug = 3,
    	.gpio_group_id = GPIO_27,
    	.clk_req = CLK_REQ1,
    },