^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) Device tree bindings for GPMC connected OneNANDs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) GPMC connected OneNAND (found on OMAP boards) are represented as child nodes of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) the GPMC controller with a name of "onenand".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) All timing relevant properties as well as generic gpmc child properties are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) explained in a separate documents - please refer to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) Documentation/devicetree/bindings/memory-controllers/omap-gpmc.txt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) Required properties:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) - compatible: "ti,omap2-onenand"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) - reg: The CS line the peripheral is connected to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) - gpmc,device-width: Width of the ONENAND device connected to the GPMC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) in bytes. Must be 1 or 2.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) Optional properties:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) - int-gpios: GPIO specifier for the INT pin.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) For inline partition table parsing (optional):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) - #address-cells: should be set to 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) - #size-cells: should be set to 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) Example for an OMAP3430 board:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) gpmc: gpmc@6e000000 {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) compatible = "ti,omap3430-gpmc";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) ti,hwmods = "gpmc";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) reg = <0x6e000000 0x1000000>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) interrupts = <20>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) gpmc,num-cs = <8>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) gpmc,num-waitpins = <4>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #address-cells = <2>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #size-cells = <1>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) onenand@0 {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) compatible = "ti,omap2-onenand";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) reg = <0 0 0>; /* CS0, offset 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) gpmc,device-width = <2>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #address-cells = <1>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #size-cells = <1>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) /* partitions go here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) };