drm/nouveau/pmu/gk104: check fuse to determine presence of PGOB
Not 100% confirmed, but seems to match from the few boards I've looked
at so far.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gk104.c b/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gk104.c
index e33f5c0..d942fa7 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gk104.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gk104.c
@@ -27,6 +27,7 @@
#include "fuc/gf119.fuc4.h"
#include <core/option.h>
+#include <subdev/fuse.h>
#include <subdev/timer.h>
static void
@@ -57,6 +58,9 @@
{
struct nvkm_device *device = pmu->subdev.device;
+ if (!(nvkm_fuse_read(device->fuse, 0x31c) & 0x00000001))
+ return;
+
nvkm_mask(device, 0x000200, 0x00001000, 0x00000000);
nvkm_rd32(device, 0x000200);
nvkm_mask(device, 0x000200, 0x08000000, 0x08000000);