Messages in this thread Patch in this message | | | From | Masahiro Yamada <> | Subject | [PATCH v2] dt-bindings: nand: denali: reduce the register space in the example | Date | Fri, 22 Sep 2017 14:58:23 +0900 |
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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.
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>; }; -- 2.7.4
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