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1Freescale Localbus UPM programmed to work with NAND flash2 3Required properties:4- compatible : "fsl,upm-nand".5- reg : should specify localbus chip select and size used for the chip.6- fsl,upm-addr-offset : UPM pattern offset for the address latch.7- fsl,upm-cmd-offset : UPM pattern offset for the command latch.8 9Optional properties:10- fsl,upm-addr-line-cs-offsets : address offsets for multi-chip support.11 The corresponding address lines are used to select the chip.12- gpios : may specify optional GPIOs connected to the Ready-Not-Busy pins13 (R/B#). For multi-chip devices, "n" GPIO definitions are required14 according to the number of chips.15 16Deprecated properties:17- fsl,upm-wait-flags : add chip-dependent short delays after running the18 UPM pattern (0x1), after writing a data byte (0x2) or after19 writing out a buffer (0x4).20- chip-delay : chip dependent delay for transferring data from array to21 read registers (tR). Required if property "gpios" is not used22 (R/B# pins not connected).23 24Each flash chip described may optionally contain additional sub-nodes25describing partitions of the address space. See mtd.yaml for more26detail.27 28Examples:29 30upm@1,0 {31 compatible = "fsl,upm-nand";32 reg = <1 0 1>;33 fsl,upm-addr-offset = <16>;34 fsl,upm-cmd-offset = <8>;35 gpios = <&qe_pio_e 18 0>;36 37 flash {38 #address-cells = <1>;39 #size-cells = <1>;40 compatible = "...";41 42 partition@0 {43 ...44 };45 };46};47 48upm@3,0 {49 #address-cells = <0>;50 #size-cells = <0>;51 compatible = "tqc,tqm8548-upm-nand", "fsl,upm-nand";52 reg = <3 0x0 0x800>;53 fsl,upm-addr-offset = <0x10>;54 fsl,upm-cmd-offset = <0x08>;55 /* Multi-chip NAND device */56 fsl,upm-addr-line-cs-offsets = <0x0 0x200>;57 58 nand@0 {59 #address-cells = <1>;60 #size-cells = <1>;61 62 partition@0 {63 label = "fs";64 reg = <0x00000000 0x10000000>;65 };66 };67};68