From: Franklin S Cooper Jr <fcooper-l0cyMroinI0@public.gmane.org>
To: robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
boris.brezillon-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org,
richard-/L3Ra7n9ekc@public.gmane.org,
dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org,
computersforpeace-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org,
rogerq-l0cyMroinI0@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
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Cc: "Cooper Jr., Franklin" <fcooper-l0cyMroinI0@public.gmane.org>
Subject: [PATCH 2/2] ARM: OMAP2+: Update GPMC and NAND DT binding documentation
Date: Tue, 3 May 2016 12:50:06 -0500 [thread overview]
Message-ID: <1462297806-11555-3-git-send-email-fcooper@ti.com> (raw)
In-Reply-To: <1462297806-11555-1-git-send-email-fcooper-l0cyMroinI0@public.gmane.org>
From: "Cooper Jr., Franklin" <fcooper-l0cyMroinI0@public.gmane.org>
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-l0cyMroinI0@public.gmane.org>
Acked-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
---
Documentation/devicetree/bindings/memory-controllers/omap-gpmc.txt | 7 ++++++-
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 21055e2..c1359f4 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 3ee7e20..174f68c 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
--
2.7.0
--
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prev parent reply other threads:[~2016-05-03 17:50 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-03 17:50 [PATCH 0/2] mtd: nand: omap2: Add EDMA support for NAND DMA prefetch Franklin S Cooper Jr
2016-05-03 17:50 ` [PATCH 1/2] mtd: nand: omap2: Support parsing dma channel information from DT Franklin S Cooper Jr
[not found] ` <1462297806-11555-1-git-send-email-fcooper-l0cyMroinI0@public.gmane.org>
2016-05-03 17:50 ` Franklin S Cooper Jr [this message]
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