On Sun, May 10, 2015 at 08:29:58PM +0200, Lucas Stach wrote:
> This adds the devicetree binding for the Tegra 2 NAND flash
> controller.
>
> Signed-off-by: Lucas Stach <dev@xxxxxxxxxx>
> ---
> .../bindings/mtd/nvidia,tegra20-nand.txt | 29 ++++++++++++++++++++++
> 1 file changed, 29 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/mtd/nvidia,tegra20-nand.txt
>
> diff --git a/Documentation/devicetree/bindings/mtd/nvidia,tegra20-nand.txt b/Documentation/devicetree/bindings/mtd/nvidia,tegra20-nand.txt
> new file mode 100644
> index 0000000..522d442
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mtd/nvidia,tegra20-nand.txt
> @@ -0,0 +1,29 @@
> +NVIDIA Tegra NAND Flash controller
> +
> +Required properties:
> +- compatible: Must be one of:
> + - "nvidia,tegra20-nand"
> +- reg: MMIO address range
> +- interrupts: interrupt output of the NFC controller
> +- clocks: Must contain an entry for each entry in clock-names.
> + See ../clocks/clock-bindings.txt for details.
> +- clock-names: Must include the following entries:
> + - nand
> +- resets: Must contain an entry for each entry in reset-names.
> + See ../reset/reset.txt for details.
> +- reset-names: Must include the following entries:
> + - nand
> +
> +Optional properties:
> +- nvidia,wp-gpios: GPIO used to disable write protection of the flash
I think write-protect is a pretty common function, so we might want to
just remove the 'nvidia,' prefix, so we can eventually move your code to
the core nand_base.c library (BTW, I noticed you grab the GPIO, but you
don't do anything with it; is that intentional?). In fact, I've seen
requests for that very feature on the mailing list.
> +
> + Example:
> + nand@70008000 {
> + compatible = "nvidia,tegra20-nand";
> + reg = <0x70008000 0x100>;
> + interrupts = <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&tegra_car TEGRA20_CLK_NDFLASH>;
> + clock-names = "nand";
> + resets = <&tegra_car 13>;
> + reset-names = "nand";
> + };
Otherwise, looks good.
Reviewed-by: Brian Norris <computersforpeace@xxxxxxxxx>
I have a few comments on the NAND driver, too.
Brian
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