@@ -222,3 +222,54 @@
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 */
+ };
+ };
+};
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. Signed-off-by: Ash Charles <ashcharles@gmail.com> [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 --- arch/arm/boot/dts/omap3-overo-base.dtsi | 51 +++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+)