From: Pekon Gupta <pekon@ti.com>
Date: Mon, 19 May 2014 09:15:46 +0000 (+0530)
Subject: ARM: dts: am437x-gp-evm: add support for parallel NAND flash
X-Git-Tag: omap-for-v3.16/dt-part3~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=99ffa6425f1b9ac39c5e9946c1c286f687b97c3e;p=pandora-kernel.git

ARM: dts: am437x-gp-evm: add support for parallel NAND flash

Adds pinmux and DT node for Micron (MT29F4G08AB) x8 NAND device present on
am437x-gp-evm board.
(1) As NAND Flash data lines are muxed with eMMC, Thus at a given time either
    eMMC or NAND can be enabled. Selection between eMMC and NAND is controlled:
    (a) By dynamically driving following GPIO pin from software
        SPI2_CS0(GPIO) == 0 NAND is selected (default)
        SPI2_CS0(GPIO) == 1 eMMC is selected
    (b) By statically using Jumper (J89) on the board

(2) As NAND device connnected to this board has page-size=4K and oob-size=224,
    So ROM code expects boot-loaders to be flashed in BCH16 ECC scheme for
    NAND boot.

Signed-off-by: Pekon Gupta <pekon@ti.com>
Reviewed-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---

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