On Wed, Mar 25, 2009 at 11:08:20AM +0100, Wolfgang Grandegger wrote:
> This patch adds documentation for the new NAND FSL UPM bindings for:
>
> NAND: FSL-UPM: add multi chip support
> NAND: FSL-UPM: Add wait flags to support board/chip specific delays
>
> Signed-off-by: Wolfgang Grandegger <w...@grandegger.com>
> ---
To me it looks good.
Acked-by: Anton Vorontsov <avoront...@ru.mvista.com>
> .../powerpc/dts-bindings/fsl/upm-nand.txt | 39
> +++++++++++++++++++-
> 1 files changed, 37 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/powerpc/dts-bindings/fsl/upm-nand.txt
> b/Documentation/powerpc/dts-bindings/fsl/upm-nand.txt
> index 84a04d5..0272e70 100644
> --- a/Documentation/powerpc/dts-bindings/fsl/upm-nand.txt
> +++ b/Documentation/powerpc/dts-bindings/fsl/upm-nand.txt
> @@ -5,9 +5,22 @@ Required properties:
> - reg : should specify localbus chip select and size used for the chip.
> - fsl,upm-addr-offset : UPM pattern offset for the address latch.
> - fsl,upm-cmd-offset : UPM pattern offset for the command latch.
> -- gpios : may specify optional GPIO connected to the Ready-Not-Busy pin.
>
> -Example:
> +Optional properties:
> +- fsl,upm-wait-flags : add chip-dependent short delays after running the
> + UPM pattern (0x1), after writing a data byte (0x2)
> + or after writing out a buffer (0x4).
> +- gpios : may specify optional GPIOs connected to the Ready-Not-Busy pins
> + (R/B#). For multi-chip devices, "num-chips" GPIO definitions are
> + required.
> +- chip-delay : chip dependent delay for transfering data from array to
> + read registers (tR). Required if property "gpios" is not
> + used (R/B# pins not connected).
> +- num-chips : number of chips per device for multi-chip support.
> +- chip-offset : address offset between chips for multi-chip support. The
> + corresponding address lines are used to select the chip.
> +
> +Examples:
>
> u...@1,0 {
> compatible = "fsl,upm-nand";
> @@ -26,3 +39,25 @@ u...@1,0 {
> };
> };
> };
> +
> +...@3,0 {
> + compatible = "fsl,upm-nand";
> + reg = <3 0x0 0x800>;
> + fsl,upm-addr-offset = <0x10>;
> + fsl,upm-cmd-offset = <0x08>;
> + fsl,upm-wait-flags = <0x5>;
> + /* Multi-chip device */
> + num-chips = <2>;
> + chip-offset = <0x200>;
> + chip-delay = <25>; // in micro-seconds
> +
> + n...@0 {
> + #address-cells = <1>;
> + #size-cells = <1>;
> +
> + partit...@0 {
> + label = "fs";
> + reg = <0x00000000 0x10000000>;
> + };
> + };
> +};
> --
> 1.6.0.6
--
Anton Vorontsov
email: cbouatmai...@gmail.com
irc://irc.freenode.net/bd2
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