ARM: i.MX: Add WaRP7 board support

Signed-off-by Juergen Borleis <jbe@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 54 insertions, 0 deletions

diff --git a/Documentation/boards/imx/Element14-WaRP7.rst b/Documentation/boards/imx/Element14-WaRP7.rst
new file mode 100644
index 0000000000..d4e5e79917
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+++ b/Documentation/boards/imx/Element14-WaRP7.rst
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+element14 WaRP7
+===============
+
+This CPU card is based on an NXP i.MX7S SoC.
+
+Supported hardware
+==================
+
+- NXP PMIC PFUZE3000
+- Kingston 08EMCP04-EL3AV100 eMCP (eMMC and LPDDR3 memory in one package)
+  - 8 GiB eMMC Triple-Level cell NAND flash, eMMC standard 5.0 (HS400)
+  - 512 MiB LPDDR3 SDRAM starting at address 0x80000000
+
+Bootstrapping barebox
+=====================
+
+The device boots in internal boot mode from eMMC and is shipped with a
+vendor modified u-boot imximage.
+
+Barebox can be used as a drop-in replacement for the shipped bootloader.
+
+The WaRP7 IO Board has a double DIP switch where switch number two defines the
+boot source of the i.MX7 SoC:
+
+  +-----+
+  |     |
+  | | O | <--- on = high level
+  | | | |
+  | O | | <--- off = low level
+  |     |
+  | 1 2 |
+  +-----+
+
+Bootsource is the internal eMMC:
+
+  +-----+
+  |     |
+  | O | |
+  | | | |
+  | | O | <---- eMMC
+  |     |
+  | 1 2 |
+  +-----+
+
+Bootsource is the USB:
+
+  +-----+
+  |     |
+  | O O | <---- USB
+  | | | |
+  | | | |
+  |     |
+  | 1 2 |
+  +-----+