Inquire about the official DMIPS/MHz value for Cortex A53.

Hello, I'd like to inquire about the official DMIPS/MHz value for Cortex A53.

Question 1:

Cortex M7 Webpage: developer.arm.com/.../Cortex-M7
Cortex A53 Webpage: developer.arm.com/.../Cortex-A53

I'm wondering if there exists an official DMIPS/MHz value for Cortex A53.
While Cortex M7 has its DMIPS/MHz value listed on the official webpage as shown in the provided link, Cortex A53's value is not available there.

Question 2:
unofficial DMIPS/MHz website 01: en.wikipedia.org/.../List_of_ARM_processors
unofficial DMIPS/MHz website 02:
web.archive.org/.../cortex-a53-processor.php

Based on the links provided, I've researched unofficial DMIPS/MHz values for Cortex A53.
it seems that the value is around 2.3.
If this value is valid, I would like to know under which optimization level of armcc it was measured, and whether it was measured using single core, dual core, quad core configurations, or any other specific setup.