Information about config values was taken from:
From 804820df7bcb3d53a33ecd074b1eac277e938f24 Mon Sep 17 00:00:00 2001
From: Alexey Sheplyakov <asheplyakov@altlinux.org>
Date: Thu, 4 Feb 2021 19:35:14 +0400
Subject: [PATCH] config-aarch64: adjusted for Baikal-M (MBM1.0 board)
* DW_APB_TIMER=y, DW_APB_TIMER_OF=y: SoC clocks
* SERIAL_8250_DW=y: serial console
* I2C_DESIGNWARE_CORE=y, I2C_DESIGNWARE_PLATFORM=y: BMC (board
management controller) and RTC (Real Time Clock) are connected
via I2C.
* GPIO_DWAPB=y: device (PCIe, PHY, etc) reset/configuration
* RTC_DRV_PCF2127=y: RTC compiled in so the kernel automatically
sets the system time from the hardware clock
* TP_BMC=y: amongst other things handles the power button
* DRM_BAIKAL_VDU=m, DRM_BAIKAL_HDMI=m: video unit and HDMI transmitter
* CMA_SIZE_MBYTES=256: video display unit and GPU use system RAM, hence
CMA should reserve enough (contiguous) memory.
Note: CMA reserves memory during very early init, hence the size
has to be hard-coded into CONFIG
* MALI_MIDGARD=m: GPU driver, kernel side of proprietary mali blob.
Note: kernel mode code is GPLv2, so it's fine to distribute it.
* SENSORS_BT1_PVT=m: hardware temperature/voltage sensors
* PCI_BAIKAL=m: PCIe root complex. Compiled as a module since takes
ages (60 seconds or so) to probe the hardware. If compiled in
substantially increases the boot time, and machine is completely
unresponsive during probing PCIe. When built as a module probing
executes concurrently with other boot activities (unless booting
from a PCIe device)
* STMMAC_ETH=m, STMMAC_PLATFORM=m, DWMAC_BAIKAL=m: Ethernet driver
