[PATCH v7 3/3] dt/bindings: qcom_nandc: Add DT bindings

[Archit Taneja]

On 01/21/2016 12:43 PM, Archit Taneja wrote:
> Add DT bindings document for the Qualcomm NAND controller driver.

Missed on inserting a "Reviewed-by" from Boris here.

>
> Acked-by: Rob Herring <robh at kernel.org>
> Signed-off-by: Archit Taneja <architt at codeaurora.org>
> ---
>   .../devicetree/bindings/mtd/qcom_nandc.txt         | 86 ++++++++++++++++++++++
>   1 file changed, 86 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/mtd/qcom_nandc.txt
>
> diff --git a/Documentation/devicetree/bindings/mtd/qcom_nandc.txt b/Documentation/devicetree/bindings/mtd/qcom_nandc.txt
> new file mode 100644
> index 0000000..70dd511
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mtd/qcom_nandc.txt
> @@ -0,0 +1,86 @@
> +* Qualcomm NAND controller
> +
> +Required properties:
> +- compatible:		should be "qcom,ipq806x-nand"
> +- reg:			MMIO address range
> +- clocks:		must contain core clock and always on clock
> +- clock-names:		must contain "core" for the core clock and "aon" for the
> +			always on clock
> +- dmas:			DMA specifier, consisting of a phandle to the ADM DMA
> +			controller node and the channel number to be used for
> +			NAND. Refer to dma.txt and qcom_adm.txt for more details
> +- dma-names:		must be "rxtx"
> +- qcom,cmd-crci:	must contain the ADM command type CRCI block instance
> +			number specified for the NAND controller on the given
> +			platform
> +- qcom,data-crci:	must contain the ADM data type CRCI block instance
> +			number specified for the NAND controller on the given
> +			platform
> +- #address-cells:	<1> - subnodes give the chip-select number
> +- #size-cells:		<0>
> +
> +* NAND chip-select
> +
> +Each controller may contain one or more subnodes to represent enabled
> +chip-selects which (may) contain NAND flash chips. Their properties are as
> +follows.
> +
> +Required properties:
> +- compatible:		should contain "qcom,nandcs"
> +- reg:			a single integer representing the chip-select
> +			number (e.g., 0, 1, 2, etc.)
> +- #address-cells:	see partition.txt
> +- #size-cells:		see partition.txt
> +- nand-ecc-strength:	see nand.txt
> +- nand-ecc-step-size:	must be 512. see nand.txt for more details.
> +
> +Optional properties:
> +- nand-bus-width:	see nand.txt
> +
> +Each nandcs device node may optionally contain a 'partitions' sub-node, which
> +further contains sub-nodes describing the flash partition mapping. See
> +partition.txt for more detail.
> +
> +Example:
> +
> +nand at 1ac00000 {
> +	compatible = "qcom,ebi2-nandc";
> +	reg = <0x1ac00000 0x800>;
> +
> +	clocks = <&gcc EBI2_CLK>,
> +		 <&gcc EBI2_AON_CLK>;
> +	clock-names = "core", "aon";
> +
> +	dmas = <&adm_dma 3>;
> +	dma-names = "rxtx";
> +	qcom,cmd-crci = <15>;
> +	qcom,data-crci = <3>;
> +
> +	#address-cells = <1>;
> +	#size-cells = <0>;
> +
> +	nandcs at 0 {
> +		compatible = "qcom,nandcs";
> +		reg = <0>;
> +
> +		nand-ecc-strength = <4>;
> +		nand-ecc-step-size = <512>;
> +		nand-bus-width = <8>;
> +
> +		partitions {
> +			compatible = "fixed-partitions";
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +
> +			partition at 0 {
> +				label = "boot-nand";
> +				reg = <0 0x58a0000>;
> +			};
> +
> +			partition at 58a0000 {
> +				label = "fs-nand";
> +				reg = <0x58a0000 0x4000000>;
> +			};
> +		};
> +	};
> +};
>

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