[coreboot-gerrit] Change in coreboot[master]: mb/amd/majolica: Add variant to disable HDMI

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/61361 )

Change subject: mb/amd/majolica: Add variant to disable HDMI
......................................................................

mb/amd/majolica: Add variant to disable HDMI

For one specific type of APU, it doesn't have HDMI. When we detect
this APU, we need to explicitly disable HDMI in DDI settings,
otherwise the system would freeze.

Please refer
 src/mainboard/google/guybrush/variants/dewatt/variant.c

Change-Id: I8d7637467d2f16377d3c3064cdb0934d1658fdf7
Signed-off-by: Zheng Bao 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61361
Tested-by: build bot (Jenkins) 
Reviewed-by: Felix Held 
---
M src/mainboard/amd/majolica/port_descriptors.c
1 file changed, 5 insertions(+), 1 deletion(-)

Approvals:
  build bot (Jenkins): Verified
  Felix Held: Looks good to me, approved

diff --git a/src/mainboard/amd/majolica/port_descriptors.c b/src/mainboard/amd/majolica/port_descriptors.c
index 9c771f4..4cbccf6 100644
--- a/src/mainboard/amd/majolica/port_descriptors.c
+++ b/src/mainboard/amd/majolica/port_descriptors.c
@@ -3,6 +3,7 @@
 #include <soc/gpio.h>
 #include <soc/platform_descriptors.h>
 #include <types.h>
+#include <amdblocks/cpu.h>

static const fsp_dxio_descriptor majolica_czn_dxio_descriptors[] = {
    { /* MXM */
@@ -92,7 +93,7 @@
    }
 };

-static const fsp_ddi_descriptor majolica_czn_ddi_descriptors[] = {
+static fsp_ddi_descriptor majolica_czn_ddi_descriptors[] = {
    { /* DDI0 - DP */
    	.connector_type = DDI_DP,
    	.aux_index = DDI_AUX1,
@@ -124,6 +125,9 @@
    	const fsp_dxio_descriptor **dxio_descs, size_t *dxio_num,
    	const fsp_ddi_descriptor **ddi_descs, size_t *ddi_num)
 {
+	if ((get_cpu_count() == 4 && get_threads_per_core() == 2) || get_cpu_count() == 2)
+		majolica_czn_ddi_descriptors[1].connector_type = DDI_UNUSED_TYPE;
+
    *dxio_descs = majolica_czn_dxio_descriptors;
    *dxio_num = ARRAY_SIZE(majolica_czn_dxio_descriptors);
    *ddi_descs = majolica_czn_ddi_descriptors;