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pico-imx7d: Add SPL support

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Convert pico-imx7d to SPL support.

There are two variants of pico-imx7d SOMs:
- One with 512MB of RAM
- One with 1GB of RAM

The 512MB module contains two Hynix H5TC2G63GFR-PBA.
The 1GB module contains two Hynix H5TC4G63GFR-PBA.

The RAM size is determined in runtime by reading GPIO1_12.

While at it, also add USB Serial Download mode support as it
is very helpful for loading SPL and u-boot.img via imx_usb_loader.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
This commit is contained in:
Fabio Estevam
2018-06-29 15:19:11 -03:00
committed by Stefano Babic
parent 3fbbfed7a8
commit d5b7177f91
7 changed files with 133 additions and 101 deletions
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2
board/technexion/pico-imx7d/Makefile
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@@ -1,4 +1,4 @@
# SPDX-License-Identifier: GPL-2.0+
# (C) Copyright 2017 NXP Semiconductors
obj-y := pico-imx7d.o
obj-y := pico-imx7d.o spl.o