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| -rw-r--r-- | Documentation/devicetree/bindings/mtd/cadence-nand-controller.txt | 53 | ||||
| -rw-r--r-- | MAINTAINERS | 1 |
2 files changed, 54 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mtd/cadence-nand-controller.txt b/Documentation/devicetree/bindings/mtd/cadence-nand-controller.txt new file mode 100644 index 000000000000..f3893c4d3c6a --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/cadence-nand-controller.txt @@ -0,0 +1,53 @@ +* 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"; + }; + +}; diff --git a/MAINTAINERS b/MAINTAINERS index 29ee5c23c872..dcaea2ab3659 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3603,6 +3603,7 @@ M: Piotr Sroka <piotrs@cadence.com> L: linux-mtd@lists.infradead.org S: Maintained F: drivers/mtd/nand/raw/cadence-nand-controller.c +F: Documentation/devicetree/bindings/mtd/cadence-nand-controller.txt CADET FM/AM RADIO RECEIVER DRIVER M: Hans Verkuil <hverkuil@xs4all.nl> |