Add the sunxi NAND Flash Controller dt bindings documentation. Signed-off-by: Boris BREZILLON <b.brezillon@xxxxxxxxxxx> --- .../devicetree/bindings/mtd/sunxi-nand.txt | 71 ++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 Documentation/devicetree/bindings/mtd/sunxi-nand.txt diff --git a/Documentation/devicetree/bindings/mtd/sunxi-nand.txt b/Documentation/devicetree/bindings/mtd/sunxi-nand.txt new file mode 100644 index 0000000..c3206fc --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/sunxi-nand.txt @@ -0,0 +1,71 @@ +Allwinner NAND Flash Controller (NFC) + +Required properties: +- compatible : "allwinner,sun4i-nfc". +- reg : shall contain registers location and length for data and reg. +- interrupts : shall define the NFC interrupt. +- #address-cells: shall be set to 1. Encode the nand CS. +- #size-cells : shall be set to 0. +- clocks : shall reference NFC clocks. +- clock-names : NFC internal clock names. Shall contain : + * "ahb_clk" : AHB gating clock + * "sclk" : NFC clock + +Optional children nodes: +Children nodes represent the available nand chips. + +Required properties: +- reg : shall contain the CS ids (a given chip might use several CS) +- tCLS-min : see Documentation/devicetree/mtd/nand.txt +- tCLH-min : Documentation/devicetree/mtd/nand.txt +- tCS-min : see Documentation/devicetree/mtd/nand.txt +- tCH-min : see Documentation/devicetree/mtd/nand.txt +- tWP-min : see Documentation/devicetree/mtd/nand.txt +- tWH-min : see Documentation/devicetree/mtd/nand.txt +- tALS-min : see Documentation/devicetree/mtd/nand.txt +- tDS-min : see Documentation/devicetree/mtd/nand.txt +- tDH-min : see Documentation/devicetree/mtd/nand.txt +- tRR-min : see Documentation/devicetree/mtd/nand.txt +- tALH-min : see Documentation/devicetree/mtd/nand.txt +- tRP-min : see Documentation/devicetree/mtd/nand.txt +- tREH-min : see Documentation/devicetree/mtd/nand.txt +- tRC-min : see Documentation/devicetree/mtd/nand.txt +- tWC-min : see Documentation/devicetree/mtd/nand.txt + +Optional properties: +- allwinner,rb : shall contain the native Ready/Busy ids. + or +- rb-gpios : shall contain the gpios used as R/B pins. + +see Documentation/devicetree/mtd/nand.txt for generic bindings. + + +Examples: +nfc: nand@01c03000 { + pinctrl-names = "default"; + pinctrl-0 = <&nand_pins_a &nand_cs0_pins_a &nand_rb0_pins_a>; + status = "okay"; + + nand@0 { + reg = <0>; + allwinner,rb = <0>; + nand-ecc-mode = "soft_bch"; + + /* nand timings */ + tCLS-min = <6>; + tCLH-min = <3>; + tCS-min = <20>; + tCH-min = <5>; + tWP-min = <8>; + tWH-min = <6>; + tALS-min = <6>; + tDS-min = <6>; + tDH-min = <2>; + tRR-min = <20>; + tALH-min = <3>; + tRP-min = <8>; + tREH-min = <6>; + tRC-min = <16>; + tWC-min = <16>; + }; +}; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html