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authorRaul E Rangel <rrangel@chromium.org>2021-01-22 09:44:03 -0700
committerFelix Held <felix-coreboot@felixheld.de>2021-01-23 20:14:28 +0000
commit91839eef5cb47ec82e9b9d824ac49d7edbff0534 (patch)
tree06b7db931ce3045565d0678c6c78569100d1b628
parent76e72a0dd5b0dcc5c86a57545802e90e6c2a8d6b (diff)
soc/amd/picasso/pcie_gpp: Add clarifying comment
Each bridge can only have one device. BUG=b:170595019 BRANCH=zork TEST=none Signed-off-by: Raul E Rangel <rrangel@chromium.org> Change-Id: I7e476221dfcabc841cc1ed4bc4b1175c0652dcfe Reviewed-on: https://review.coreboot.org/c/coreboot/+/49841 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Felix Held <felix-coreboot@felixheld.de> Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
-rw-r--r--src/soc/amd/picasso/pcie_gpp.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/soc/amd/picasso/pcie_gpp.c b/src/soc/amd/picasso/pcie_gpp.c
index 8b6af4aa0f..1acd021c9c 100644
--- a/src/soc/amd/picasso/pcie_gpp.c
+++ b/src/soc/amd/picasso/pcie_gpp.c
@@ -153,6 +153,7 @@ static void acpigen_write_PRT(const struct device *dev)
irq_index = calculate_irq(pci_routing, i);
acpigen_write_package(4);
+ /* There is only one device attached to the bridge */
acpigen_write_dword(0x0000FFFF);
acpigen_write_byte(i);
acpigen_write_byte(0); /* Source: GSI */
@@ -176,6 +177,7 @@ static void acpigen_write_PRT(const struct device *dev)
link_template[8] = 'A' + (irq_index % 8);
acpigen_write_package(4);
+ /* There is only one device attached to the bridge */
acpigen_write_dword(0x0000FFFF);
acpigen_write_byte(i);
acpigen_emit_namestring(link_template);