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Commit 98ce6007 authored by Ash Charles's avatar Ash Charles Committed by Tony Lindgren
Browse files

ARM: dts: overo: Support PoP NAND 

Some Overo COM models include NAND flash in the on-board
package-on-package (PoP) chip.  Add this to the base Overo devicetree.

Most commonly, this is 512MB NAND from the Micron MT29C4G96MAZ family
but, as discussed [1], several different sized are possible. To
support different sizes, the last partition should fill to the end of
the chip (i.e. MTDPART_SIZ_FULL).

With thanks to Florian Vaussard for the original patch [2] and Adam Lee for
updating it here.

[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2013-June/175760.html
[2] http://lists.infradead.org/pipermail/linux-arm-kernel/2013-June/175449.html



Signed-off-by: default avatarAsh Charles <ashcharles@gmail.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent d765af89

arch/arm/boot/dts/omap3-overo-base.dtsi

+52 −0
Original line number Diff line number Diff line
@@ -221,3 +221,55 @@ 
&mcbsp2 {

	status = "okay";

};



&gpmc {

	ranges = <0 0 0x00000000 0x20000000>;



	nand@0,0 {

		linux,mtd-name= "micron,mt29c4g96maz";

		reg = <0 0 0>;

		nand-bus-width = <16>;

		gpmc,device-width = <2>;

		ti,nand-ecc-opt = "bch8";



		gpmc,sync-clk-ps = <0>;

		gpmc,cs-on-ns = <0>;

		gpmc,cs-rd-off-ns = <44>;

		gpmc,cs-wr-off-ns = <44>;

		gpmc,adv-on-ns = <6>;

		gpmc,adv-rd-off-ns = <34>;

		gpmc,adv-wr-off-ns = <44>;

		gpmc,we-off-ns = <40>;

		gpmc,oe-off-ns = <54>;

		gpmc,access-ns = <64>;

		gpmc,rd-cycle-ns = <82>;

		gpmc,wr-cycle-ns = <82>;

		gpmc,wr-access-ns = <40>;

		gpmc,wr-data-mux-bus-ns = <0>;



		#address-cells = <1>;

		#size-cells = <1>;



		partition@0 {

			label = "SPL";

			reg = <0 0x80000>; /* 512KiB */

		};

		partition@80000 {

			label = "U-Boot";

			reg = <0x80000 0x1C0000>; /* 1792KiB */

		};

		partition@1c0000 {

			label = "Environment";

			reg = <0x240000 0x40000>; /* 256KiB */

		};

		partition@280000 {

			label = "Kernel";

			reg = <0x280000 0x800000>; /* 8192KiB */

		};

		partition@780000 {

			label = "Filesystem";

			reg = <0xA80000 0>;

			/* HACK: MTDPART_SIZ_FULL=0 so fill to end */

		};

	};

};