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| author | Cooper Jr., Franklin <fcooper@ti.com> | 2016-05-04 20:34:44 +0200 |
|---|---|---|
| committer | Boris Brezillon <boris.brezillon@free-electrons.com> | 2016-05-30 10:03:18 +0200 |
| commit | cabfeaa67843bf8ddda819a6129e20472053310a (patch) | |
| tree | 5630fb43b2952211c2871c885d89789fbee30a66 | |
| parent | mtd: nand: omap2: Support parsing dma channel information from DT (diff) | |
| download | linux-cabfeaa67843bf8ddda819a6129e20472053310a.tar.xz linux-cabfeaa67843bf8ddda819a6129e20472053310a.zip | |
ARM: OMAP2+: Update GPMC and NAND DT binding documentation
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>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
| -rw-r--r-- | Documentation/devicetree/bindings/memory-controllers/omap-gpmc.txt | 7 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/mtd/gpmc-nand.txt | 2 |
2 files changed, 7 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/memory-controllers/omap-gpmc.txt b/Documentation/devicetree/bindings/memory-controllers/omap-gpmc.txt index 21055e210234..c1359f4d48d7 100644 --- a/Documentation/devicetree/bindings/memory-controllers/omap-gpmc.txt +++ b/Documentation/devicetree/bindings/memory-controllers/omap-gpmc.txt @@ -46,6 +46,10 @@ Required properties: 0 maps to GPMC_WAIT0 pin. - gpio-cells: Must be set to 2 +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 @@ -137,7 +141,8 @@ 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 3ee7e202657c..174f68c26c1b 100644 --- a/Documentation/devicetree/bindings/mtd/gpmc-nand.txt +++ b/Documentation/devicetree/bindings/mtd/gpmc-nand.txt @@ -39,7 +39,7 @@ 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 |