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For YUV 420 Planar formats like NV12, buffer allocation is done for Y and UV surfaces separately. For NV12 plane formats, the UV buffer allocation must be programmed in the Plane Buffer Config register and the Y buffer allocation must be programmed in the Plane NV12 Buffer Config register. Both register values should be verified during verify_wm_state. v2: Addressed review comments by Maarten. v3: Addressed review comments by Shashank Sharma. v4: Adding reviewed by tag from Shashank Sharma v5: Added reviewed by from Juha-Pekka Heikkila v6: Rebased the series Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com> Reviewed-by: Shashank Sharma <shashank.sharma@intel.com> Signed-off-by: Mahesh Kumar <mahesh1.kumar@intel.com> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/1523245273-30264-5-git-send-email-vidya.srinivas@intel.com