gpu: nvgpu: missing power sensor detection

Monitoring INA3221 is currently missing on some customer designs.
Use PCI vendor/device ids and VBIOS version to identify such device,
and set power_sensor_missing flag. This flag is subsequently used
to skip power device and power policy programming in PMU.

Bug 1903258

Change-Id: Ia6b5ce563b5cc3593e138635639025b830e4535e
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: http://git-master/r/1460936
(cherry picked from commit 42f236c210931d28d2699858bb0663b91cf11046)
Reviewed-on: http://git-master/r/1463104
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gm206/bios_gm206.c b/drivers/gpu/nvgpu/gm206/bios_gm206.c
index cf737fed..2c84ac62 100644
--- a/drivers/gpu/nvgpu/gm206/bios_gm206.c
+++ b/drivers/gpu/nvgpu/gm206/bios_gm206.c
@@ -303,6 +303,12 @@ int gm206_bios_init(struct gk20a *g)
                 return -EINVAL;
         }
 
+        /* WAR for missing INA3221 on HW2.5 RevA */
+        g->power_sensor_missing =
+                (g->pci_vendor_id == PCI_VENDOR_ID_NVIDIA) &&
+                (g->pci_device_id == 0x1c75) &&
+                (g->gpu_characteristics.vbios_version == 0x86065300);
+
         g->bios_blob.data = g->bios.data;
         g->bios_blob.size = g->bios.size;