[PATCH v4 7/7] ARM: OMAP2+: Update GPMC and NAND DT binding documentation

Franklin S Cooper Jr
2016-03-10T23:56:43Z

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(-)

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