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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org Signed-off-by: Piotr Sroka --- Changes for v2: - remove chip dependends parameters from dts bindings - add names for register ranges in dts bindings - add generic bindings to describe NAND chip representation under the NAND controller node --- .../bindings/mtd/cadence-nand-controller.txt | 48 ++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 Documentation/devicetree/bindings/mtd/cadence-nand-controller.txt 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..3d9b4decae24 --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/cadence-nand-controller.txt @@ -0,0 +1,48 @@ +* Cadence NAND controller + +Required properties: + - compatible : "cdns,hpnfc" + - 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 "cadence_reg" and "cadence_sdma" + - interrupts : The interrupt number. + - clocks: phandle of the controller core clock (nf_clk). + - Children 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 + +Optional properties: + - dmas: shall reference DMA channel associated to the NAND controller + - cdns,board-delay : 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 + +See Documentation/devicetree/bindings/mtd/nand.txt for more details on +generic bindings. + +Example: + +nand_controller: nand-controller @60000000 { + compatible = "cdns,hpnfc"; + reg = <0x60000000 0x10000>, <0x80000000 0x10000>; + reg-names = "cadence_reg", "cadence_sdma"; + clocks = <&nf_clk>; + cdns,board-delay = <4830>; + interrupts = <2 0>; + nand@0 { + reg = <0>; + label = "nand-1"; + }; + nand@1 { + reg = <1>; + label = "nand-2"; + }; + +}; -- 2.15.0 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/