| * Cadence NAND controller |
| |
| Required properties: |
| - compatible : "cdns,hp-nfc" |
| - reg : Contains two entries, each of which is a tuple consisting of a |
| physical address and length. The first entry is the address and |
| length of the controller register set. The second entry is the |
| address and length of the Slave DMA data port. |
| - reg-names: should contain "reg" and "sdma" |
| - #address-cells: should be 1. The cell encodes the chip select connection. |
| - #size-cells : should be 0. |
| - interrupts : The interrupt number. |
| - clocks: phandle of the controller core clock (nf_clk). |
| |
| Optional properties: |
| - dmas: shall reference DMA channel associated to the NAND controller |
| - cdns,board-delay-ps : Estimated Board delay. The value includes the total |
| round trip delay for the signals and is used for deciding on values |
| associated with data read capture. The example formula for SDR mode is |
| the following: |
| board delay = RE#PAD delay + PCB trace to device + PCB trace from device |
| + DQ PAD delay |
| |
| Child nodes represent the available NAND chips. |
| |
| Required properties of NAND chips: |
| - reg: shall contain the native Chip Select ids from 0 to max supported by |
| the cadence nand flash controller |
| |
| See Documentation/devicetree/bindings/mtd/nand.txt for more details on |
| generic bindings. |
| |
| Example: |
| |
| nand_controller: nand-controller@60000000 { |
| compatible = "cdns,hp-nfc"; |
| #address-cells = <1>; |
| #size-cells = <0>; |
| reg = <0x60000000 0x10000>, <0x80000000 0x10000>; |
| reg-names = "reg", "sdma"; |
| clocks = <&nf_clk>; |
| cdns,board-delay-ps = <4830>; |
| interrupts = <2 0>; |
| nand@0 { |
| reg = <0>; |
| label = "nand-1"; |
| }; |
| nand@1 { |
| reg = <1>; |
| label = "nand-2"; |
| }; |
| |
| }; |