Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1737372
| 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 |
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>;
> };
Back to linux.kernel | Previous | Next — Previous in thread | Find similar | Unroll thread
[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
csiph-web