board: toradex: add verdin imx8m plus support

This adds initial minimal support for the Toradex Verdin iMX8M Plus Quad
4GB WB IT V1.0A and Toradex Verdin iMX8M Plus Quad 2GB V1.0A modules.
They are strapped to boot from eFuses which are factory fused to
properly boot from their on-module eMMC. U-Boot supports booting from
the on-module eMMC or, if the recovery button/pin is asserted, via USB
serial download aka SDP support.

Functionality wise the following is known to be working:
- eMMC, 8-bit and 4-bit MMC/SD card slots
- Ethernet (but only 2nd one available on the Verdin Development board)
- GPIOs
- I2C

Boot sequence is:
SPL ---> ATF (TF-A) ---> U-boot proper

ATF, U-boot proper and u-boot.dtb images are packed into a FIT image,
loaded by SPL.

Boot:
U-Boot SPL 2020.04-00217-gfad48768ba (Nov 18 2020 - 14:22:31 +0100)
DDRINFO: start DRAM init
DDRINFO: DRAM rate 4000MTS
DDRINFO:ddrphy calibration done
DDRINFO: ddrmix config done
Normal Boot
Trying to boot from BOOTROM
Find FIT header 0x4803afa0, size 855
Need continue download 1024
Download 833424, total fit 834544
NOTICE:  BL31: v2.2(release):imx_5.4.24_er3-6-g0a236bda5
NOTICE:  BL31: Built : 13:40:19, Nov 12 2020

U-Boot 2020.04-00217-gfad48768ba (Nov 18 2020 - 14:22:31 +0100)

alloc_simple() alloc space exhausted
CPU:   i.MX8MP[8] rev1.0 1800 MHz (running at 1200 MHz)
CPU:   Commercial temperature grade (0C to 95C) at 46C
Reset cause: POR
DRAM:  4 GiB
MMC:   FSL_SDHC: 1, FSL_SDHC: 2
In:    serial
Out:   serial
Err:   serial
Model: Toradex Verdin iMX8M Plus Quad 4GB Wi-Fi / BT IT V1.0A, Serial# 06775455
MISSING TORADEX CARRIER CONFIG BLOCKS

 BuildInfo:
  - ATF 0a236bd
  - U-Boot 2020.04-00217-gfad48768ba

Detect USB boot. Will enter fastboot mode!
Net:
Warning: ethernet@30bf0000 (eth1) using random MAC address - 56:c0:c6:84:63:a0
eth0: ethernet@30be0000, eth1: ethernet@30bf0000 [PRIME]
Fastboot: Normal
Boot from USB for mfgtools
*** Warning - Use default environment for                                mfgtools
, using default environment

Run bootcmd_mfg: fastboot 0
Hit any key to stop autoboot:  0
Verdin iMX8MP #

Related-to: ELB-3208
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/board/toradex/verdin-imx8mp/Makefile b/board/toradex/verdin-imx8mp/Makefile
new file mode 100644
index 0000000000..287601390b
--- /dev/null
+++ b/board/toradex/verdin-imx8mp/Makefile
@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright 2020 Toradex
+#
+
+obj-y += verdin-imx8mp.o
+
+ifdef CONFIG_SPL_BUILD
+obj-y += spl.o
+obj-$(CONFIG_IMX8M_LPDDR4) += lpddr4_timing.o
+endif