gpu: nvgpu: determine memory configuration in hal

Remove mem_config_idx from platform data, and instead let
HAL determine which memory configuration to use. For this
purpose, HAL may use PCI device identifiers, VBIOS version
and possibly RAMCFG strap register.

Bug 1929155

Change-Id: I9fcd67ff407382839ff81470789043fae1c81283
Reviewed-on: http://git-master/r/1497813
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
(cherry picked from commit 3f722945213bacfc5f6707059b9baccebd92cef1)
Reviewed-on: https://git-master/r/1506583
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 2 insertions, 6 deletions

diff --git a/drivers/gpu/nvgpu/gm206/bios_gm206.c b/drivers/gpu/nvgpu/gm206/bios_gm206.c
index 567b01ce..499fb53f 100644
--- a/drivers/gpu/nvgpu/gm206/bios_gm206.c
+++ b/drivers/gpu/nvgpu/gm206/bios_gm206.c
@@ -315,15 +315,11 @@ int gm206_bios_init(struct gk20a *g)
                 return -EINVAL;
         }
 
-        /* WAR for HW2.5 RevA (identified by VBIOS version)
-         * - INA3221 is missing
-         * - use PG418 MCLK switching sequences
-         */
+        /* WAR for HW2.5 RevA (INA3221 is missing) */
         if ((g->pci_vendor_id == PCI_VENDOR_ID_NVIDIA) &&
                 (g->pci_device_id == 0x1c75) &&
                 (g->gpu_characteristics.vbios_version == 0x86065300)) {
-                g->power_sensor_missing = true;
-                g->mem_config_idx = GP106_MEM_CONFIG_GDDR5_PG418;
+                        g->power_sensor_missing = true;
         }
 
 #ifdef CONFIG_DEBUG_FS