| Message ID | 1457654203-20856-8-git-send-email-fcooper@ti.com |
|---|---|
| State | Superseded |
| Headers | show |
On Thu, Mar 10, 2016 at 05:56:43PM -0600, Franklin S Cooper Jr wrote: > 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> > --- > Documentation/devicetree/bindings/bus/ti-gpmc.txt | 7 ++++++- > Documentation/devicetree/bindings/mtd/gpmc-nand.txt | 2 +- > 2 files changed, 7 insertions(+), 2 deletions(-) Acked-by: Rob Herring <robh@kernel.org>
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
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> --- Documentation/devicetree/bindings/bus/ti-gpmc.txt | 7 ++++++- Documentation/devicetree/bindings/mtd/gpmc-nand.txt | 2 +- 2 files changed, 7 insertions(+), 2 deletions(-)