diff --git a/drivers/gpu/nvgpu/common/linux/pci.c b/drivers/gpu/nvgpu/common/linux/pci.c
index acb1bb9f9..939854e72 100644
--- a/drivers/gpu/nvgpu/common/linux/pci.c
+++ b/drivers/gpu/nvgpu/common/linux/pci.c
@@ -96,7 +96,6 @@ static struct gk20a_platform nvgpu_pci_device[] = {
 	.ina3221_dcb_index = 0,
 	.ina3221_i2c_address = 0x84,
 	.ina3221_i2c_port = 0x2,
-	.mem_config_idx = GP106_MEM_CONFIG_GDDR5_PG418,
 	},
 	{ /* DEVICE=0x1c36 */
 	/* ptimer src frequency in hz */
@@ -132,7 +131,6 @@ static struct gk20a_platform nvgpu_pci_device[] = {
 	.ina3221_dcb_index = 0,
 	.ina3221_i2c_address = 0x84,
 	.ina3221_i2c_port = 0x2,
-	.mem_config_idx = GP106_MEM_CONFIG_GDDR5_PG418,
 	},
 	{ /* DEVICE=0x1c37 */
 	/* ptimer src frequency in hz */
@@ -168,7 +166,6 @@ static struct gk20a_platform nvgpu_pci_device[] = {
 	.ina3221_dcb_index = 0,
 	.ina3221_i2c_address = 0x84,
 	.ina3221_i2c_port = 0x2,
-	.mem_config_idx = GP106_MEM_CONFIG_GDDR5_PG418,
 	},
 	{ /* DEVICE=0x1c75 */
 	/* ptimer src frequency in hz */
@@ -204,7 +201,6 @@ static struct gk20a_platform nvgpu_pci_device[] = {
 	.ina3221_dcb_index = 1,
 	.ina3221_i2c_address = 0x80,
 	.ina3221_i2c_port = 0x1,
-	.mem_config_idx = GP106_MEM_CONFIG_GDDR5_PG419,
 	}
 };
 
@@ -403,8 +399,6 @@ static int nvgpu_pci_probe(struct pci_dev *pdev,
 		g->msi_enabled = true;
 #endif
 
-	g->mem_config_idx = platform->mem_config_idx;
-
 	g->irq_stall = pdev->irq;
 	g->irq_nonstall = pdev->irq;
 	if (g->irq_stall < 0)
diff --git a/drivers/gpu/nvgpu/gk20a/platform_gk20a.h b/drivers/gpu/nvgpu/gk20a/platform_gk20a.h
index 63d2c5a25..72322e541 100644
--- a/drivers/gpu/nvgpu/gk20a/platform_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/platform_gk20a.h
@@ -235,9 +235,6 @@ struct gk20a_platform {
 	u32 ina3221_dcb_index;
 	u32 ina3221_i2c_address;
 	u32 ina3221_i2c_port;
-
-	/* memory training pattern and mclk switch sequences */
-	u8 mem_config_idx;
 };
 
 static inline struct gk20a_platform *gk20a_get_platform(
diff --git a/drivers/gpu/nvgpu/gm206/bios_gm206.c b/drivers/gpu/nvgpu/gm206/bios_gm206.c
index 567b01ce6..499fb53ff 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