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ARM: dts: overo: Support PoP NAND

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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: Ash Charles <ashcharles@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Ash Charles 2015-06-12 13:37:25 -07:00 committed by Tony Lindgren
parent d765af89a4
commit 98ce6007ef
1 changed files with 52 additions and 0 deletions
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52
arch/arm/boot/dts/omap3-overo-base.dtsi
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@ -221,3 +221,55 @@ &uart2 {
&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 */
};
};
};