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Re: [PATCH v2] dt-bindings: nand: denali: reduce the register space in the example

From Boris Brezillon <boris.brezillon@free-electrons.com>
Newsgroups linux.kernel
Subject Re: [PATCH v2] dt-bindings: nand: denali: reduce the register space in the example
Date 2017-09-22 12:10 +0200
Message-ID <ust4f-4Qp-31@gated-at.bofh.it> (permalink)
References <uspjX-2Dw-7@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Fri, 22 Sep 2017 14:58:23 +0900
Masahiro Yamada <yamada.masahiro@socionext.com> wrote:

> This example allocates much more than needed for address regions.
> 
> As for "denali_reg", as you see in drivers/mtd/nand/denali.h, all
> registers fit in 0x1000.
> 
> As for "nand_data", this IP is generally configured to use Indexed
> Addressing mode, where there are only two registers in the address
> translation module (CTRL: 0x00, DATA: 0x10).  Altera SOCFPGA is
> also this case.  So, 0x20 is enough.
> 

Applied.

Thanks,

Boris

> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
> Acked-by: Rob Herring <robh@kernel.org>
> ---
> 
> Changes in v2:
>   - Add a little more explanation for rationale of this patch
> 
>  Documentation/devicetree/bindings/mtd/denali-nand.txt | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/mtd/denali-nand.txt b/Documentation/devicetree/bindings/mtd/denali-nand.txt
> index 504291d..0ee8edb 100644
> --- a/Documentation/devicetree/bindings/mtd/denali-nand.txt
> +++ b/Documentation/devicetree/bindings/mtd/denali-nand.txt
> @@ -29,7 +29,7 @@ nand: nand@ff900000 {
>  	#address-cells = <1>;
>  	#size-cells = <1>;
>  	compatible = "altr,socfpga-denali-nand";
> -	reg = <0xff900000 0x100000>, <0xffb80000 0x10000>;
> +	reg = <0xff900000 0x20>, <0xffb80000 0x1000>;
>  	reg-names = "nand_data", "denali_reg";
>  	interrupts = <0 144 4>;
>  };

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[PATCH v2] dt-bindings: nand: denali: reduce the register space in the example Masahiro Yamada <yamada.masahiro@socionext.com> - 2017-09-22 08:10 +0200
  Re: [PATCH v2] dt-bindings: nand: denali: reduce the register space  in the example Boris Brezillon <boris.brezillon@free-electrons.com> - 2017-09-22 12:10 +0200

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