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Groups > linux.kernel > #1354837
| From | Franklin S Cooper Jr <fcooper@ti.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v3 6/6] ARM: OMAP2+: Update GPMC and NAND DT binding documentation |
| Date | 2016-03-10 05:10 +0100 |
| Message-ID | <rb05c-1w0-7@gated-at.bofh.it> (permalink) |
| References | <rb05b-1w0-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Add additional details to the GPMC NAND documentation to clarify what is needed to enable NAND DMA prefetch. Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com> --- Version 3 changes: Slight tweaks to the wording Documentation/devicetree/bindings/bus/ti-gpmc.txt | 7 ++++++- Documentation/devicetree/bindings/mtd/gpmc-nand.txt | 2 +- 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/bus/ti-gpmc.txt b/Documentation/devicetree/bindings/bus/ti-gpmc.txt index 704be93..ae6388a 100644 --- a/Documentation/devicetree/bindings/bus/ti-gpmc.txt +++ b/Documentation/devicetree/bindings/bus/ti-gpmc.txt @@ -33,6 +33,10 @@ Required properties: As this will change in the future, filling correct values here is a requirement. +Required properties when using NAND prefetch dma: + - dmas GPMC NAND prefetch dma channel + - dma-names Must be set to "rxtx" + Timing properties for child nodes. All are optional and default to 0. - gpmc,sync-clk-ps: Minimum clock period for synchronous mode, in picoseconds @@ -119,7 +123,8 @@ Example for an AM33xx board: ti,hwmods = "gpmc"; reg = <0x50000000 0x2000>; interrupts = <100>; - + dmas = <&edma 52 0>; + dma-names = "rxtx"; gpmc,num-cs = <8>; gpmc,num-waitpins = <2>; #address-cells = <2>; diff --git a/Documentation/devicetree/bindings/mtd/gpmc-nand.txt b/Documentation/devicetree/bindings/mtd/gpmc-nand.txt index fb733c4..7cb9dc56 100644 --- a/Documentation/devicetree/bindings/mtd/gpmc-nand.txt +++ b/Documentation/devicetree/bindings/mtd/gpmc-nand.txt @@ -35,7 +35,7 @@ Optional properties: "prefetch-polled" Prefetch polled mode (default) "polled" Polled mode, without prefetch - "prefetch-dma" Prefetch enabled sDMA mode + "prefetch-dma" Prefetch enabled DMA mode "prefetch-irq" Prefetch enabled irq mode - elm_id: <deprecated> use "ti,elm-id" instead -- 2.7.0
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[PATCH v3 6/6] ARM: OMAP2+: Update GPMC and NAND DT binding documentation Franklin S Cooper Jr <fcooper@ti.com> - 2016-03-10 05:10 +0100
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