drm/amdgpu: add RLC_PG_DELAY_3 for yellow carp

RLC_PG_DELAY_3 is to make RLC in safe mode to
prevent any misalignment or conflict in middle of any power
feature entry/exit sequence when CGPG feature is enabled.
Signed-off-by: Aaron Liu <aaron.liu@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c

@@ -8064,12 +8064,23 @@ static void gfx_v10_cntl_power_gating(struct amdgpu_device *adev, bool enable)
 	 * in refclk count. Note that RLC FW is modified to take 16 bits from
 	 * RLC_PG_DELAY_3[15:0] as the hysteresis instead of just 8 bits.
 	 *
-	 * The recommendation from RLC team is setting RLC_PG_DELAY_3 to 200us(0x4E20)
-	 * as part of CGPG enablement starting point.
+	 * The recommendation from RLC team is setting RLC_PG_DELAY_3 to 200us as part)
+	 * of CGPG enablement starting point.
+	 * Power/performance team will optimize it and might give a new value later.
 	 */
-	if (enable && (adev->pg_flags & AMD_PG_SUPPORT_GFX_PG) && adev->asic_type == CHIP_VANGOGH) {
+	if (enable && (adev->pg_flags & AMD_PG_SUPPORT_GFX_PG)) {
+		switch (adev->asic_type) {
+		case CHIP_VANGOGH:
 			data = 0x4E20 & RLC_PG_DELAY_3__CGCG_ACTIVE_BEFORE_CGPG_MASK_Vangogh;
 			WREG32_SOC15(GC, 0, mmRLC_PG_DELAY_3, data);
+			break;
+		case CHIP_YELLOW_CARP:
+			data = 0x1388 & RLC_PG_DELAY_3__CGCG_ACTIVE_BEFORE_CGPG_MASK_Vangogh;
+			WREG32_SOC15(GC, 0, mmRLC_PG_DELAY_3, data);
+			break;
+		default:
+			break;
+		}
 	}
 }