On Wed, 19 Jul 2017 17:18:00 +0530
Abhishek Sahu <absahu@xxxxxxxxxxxxxx> wrote:
> 1. QPIC NAND will use compatible string "qcom,qpic-nandc-v1.4.0"
> 2. QPIC NAND will 3 BAM channels: command, data tx and data rx
> while EBI2 NAND uses only single ADM channel.
> 3. CRCI is only required for ADM DMA and its not required for
> QPIC NAND.
>
> Signed-off-by: Abhishek Sahu <absahu@xxxxxxxxxxxxxx>
> ---
> .../devicetree/bindings/mtd/qcom_nandc.txt | 54 ++++++++++++++++++++--
> 1 file changed, 51 insertions(+), 3 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/mtd/qcom_nandc.txt b/Documentation/devicetree/bindings/mtd/qcom_nandc.txt
> index b24adfe..8efaeb0 100644
> --- a/Documentation/devicetree/bindings/mtd/qcom_nandc.txt
> +++ b/Documentation/devicetree/bindings/mtd/qcom_nandc.txt
> @@ -1,13 +1,15 @@
> * Qualcomm NAND controller
>
> Required properties:
> -- compatible: should be "qcom,ebi2-nandc" - EBI2 NAND which uses ADM
> - DMA like IPQ8064.
> -
> +- compatible: must be one of the following:
> + * "qcom,ebi2-nandc" - EBI2 NAND which uses ADM DMA like IPQ8064.
> + * "qcom,qpic-nandc-v1.4.0" - QPIC NAND v1.4.0 which uses BAM DMA like IPQ4019.
> - 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
> +
> +EBI2 specific properties:
> - 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
> @@ -18,6 +20,12 @@ Required properties:
> - qcom,data-crci: must contain the ADM data type CRCI block instance
> number specified for the NAND controller on the given
> platform
> +
> +QPIC specific properties:
> +- dmas: DMA specifier, consisting of a phandle to the BAM DMA
> + and the channel number to be used for NAND. Refer to
> + dma.txt, qcom_bam_dma.txt for more details
> +- dma-names: must contain all 3 channel names : "tx", "rx", "cmd"
> - #address-cells: <1> - subnodes give the chip-select number
> - #size-cells: <0>
>
> @@ -84,3 +92,43 @@ nand@1ac00000 {
> };
> };
> };
> +
> +nand@79b0000 {
I think I already mentioned I'd prefer to have
nand-controller@xxxx {
> + compatible = "qcom,qpic-nandc-v1.4.0";
> + reg = <0x79b0000 0x1000>;
> +
> + clocks = <&gcc GCC_QPIC_CLK>,
> + <&gcc GCC_QPIC_AHB_CLK>;
> + clock-names = "core", "aon";
> +
> + dmas = <&qpicbam 0>,
> + <&qpicbam 1>,
> + <&qpicbam 2>;
> + dma-names = "tx", "rx", "cmd";
> +
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + nandcs@0 {
and
nand@x {
here.
> + 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@0 {
> + label = "boot-nand";
> + reg = <0 0x58a0000>;
> + };
> +
> + partition@58a0000 {
> + label = "fs-nand";
> + reg = <0x58a0000 0x4000000>;
> + };
> + };
> + };
> +};
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