soc/amd/cezanne: Enable GFX HDA FSP UPD
By default, FSP disables the GFX HDA. Enable it to support HDMI Audio
functionality.
BUG=b:186479763
TEST=Build and boot to OS in guybrush. Ensure that the GFX HDA is
enumerated in lspci output.
04:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Device 1637
Change-Id: I42cb26c44bbca3d937c5d52736c42468139f7b07
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54100
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/amd/cezanne/fsp_m_params.c b/src/soc/amd/cezanne/fsp_m_params.c
index 4aff7e0..5dd3056 100644
--- a/src/soc/amd/cezanne/fsp_m_params.c
+++ b/src/soc/amd/cezanne/fsp_m_params.c
@@ -8,10 +8,34 @@
#include <device/device.h>
#include <fsp/api.h>
#include <soc/platform_descriptors.h>
+#include <soc/pci_devs.h>
#include <string.h>
#include <types.h>
#include "chip.h"
+static const struct device_path gfx_hda_path[] = {
+ {
+ .type = DEVICE_PATH_PCI,
+ .pci.devfn = PCIE_ABC_A_DEVFN
+ },
+ {
+ .type = DEVICE_PATH_PCI,
+ .pci.devfn = GFX_HDA_DEVFN
+ },
+};
+
+static bool devtree_gfx_hda_dev_enabled(void)
+{
+ const struct device *gfx_hda_dev;
+
+ gfx_hda_dev = find_dev_nested_path(pci_root_bus(), gfx_hda_path,
+ ARRAY_SIZE(gfx_hda_path));
+ if (!gfx_hda_dev)
+ return false;
+
+ return gfx_hda_dev->enabled;
+}
+
static void fill_dxio_descriptors(FSP_M_CONFIG *mcfg,
const fsp_dxio_descriptor *descs, size_t num)
{
@@ -136,6 +160,8 @@
mcfg->telemetry_vddcrsocOffset =
config->telemetry_vddcrsocoffset;
+ mcfg->enable_nb_azalia = devtree_gfx_hda_dev_enabled();
+
fsp_fill_pcie_ddi_descriptors(mcfg);
fsp_assign_ioapic_upds(mcfg);
}