mb/google/myst: Add PCIe shutdown workaround
On Myst, the FSP is shutting down the PCIe lanes that the SSD is
on. Enable hotplug to force the FSP to keep the lanes active.
BUG=b:284213391
TEST=Boot to OS
Signed-off-by: Jon Murphy <jpmurphy@google.com>
Change-Id: Iaf0aca329f05f15a3ce9edfa6a0e782c2edccabe
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75583
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
diff --git a/src/mainboard/google/myst/port_descriptors.c b/src/mainboard/google/myst/port_descriptors.c
index 6d0d0d6..108dd4e 100644
--- a/src/mainboard/google/myst/port_descriptors.c
+++ b/src/mainboard/google/myst/port_descriptors.c
@@ -54,6 +54,8 @@
.function_number = PCI_FUNC(NVME_DEVFN),
.link_speed_capability = GEN_MAX,
.turn_off_unused_lanes = true,
+ /* TODO(b/284213391): Fix PCIe shutdown */
+ .link_hotplug = 3,
.clk_req = CLK_REQ3,
};
@@ -66,6 +68,8 @@
.function_number = PCI_FUNC(NVME_DEVFN),
.link_speed_capability = GEN_MAX,
.turn_off_unused_lanes = true,
+ /* TODO(b/284213391): Fix PCIe shutdown */
+ .link_hotplug = 3,
.clk_req = CLK_REQ3,
};