This is a note to let you know that I've just added the patch titled
ARM: dts: am43xx: fix edma memcpy channel allocation
to the 4.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm-dts-am43xx-fix-edma-memcpy-channel-allocation.patch
and it can be found in the queue-4.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d41676ddddef27224a398609d874055866694cfa Mon Sep 17 00:00:00 2001
From: Tero Kristo <t-kristo@xxxxxx>
Date: Mon, 14 Mar 2016 11:01:50 +0200
Subject: ARM: dts: am43xx: fix edma memcpy channel allocation
From: Tero Kristo <t-kristo@xxxxxx>
commit d41676ddddef27224a398609d874055866694cfa upstream.
EDMA was allocating DMA channels 32 and 33 for memcpy usage, out of which
channel 33 is actually used by DES crypto engine. This bad allocation of
the channel causes a crash in the DES crypto engine, as the channel
gets configured for memcpy usage instead of hardware <-> memory DMA.
Fixed by allocating DMA channels 58 and 59 for memcpy usage (I2C0 RX/TX),
which are not used by anybody.
Fixes: cce1ee000187 ("ARM: DTS: am437x: Use the new DT bindings for
the eDMA3")
Signed-off-by: Tero Kristo <t-kristo@xxxxxx>
Suggested-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm/boot/dts/am4372.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm/boot/dts/am4372.dtsi
+++ b/arch/arm/boot/dts/am4372.dtsi
@@ -207,7 +207,7 @@
ti,tptcs = <&edma_tptc0 7>, <&edma_tptc1 5>,
<&edma_tptc2 0>;
- ti,edma-memcpy-channels = <32 33>;
+ ti,edma-memcpy-channels = <58 59>;
};
edma_tptc0: tptc@49800000 {
Patches currently in stable-queue which might be from t-kristo@xxxxxx are
queue-4.5/arm-omap2-hwmod-fix-updating-of-sysconfig-register.patch
queue-4.5/arm-dts-am43xx-fix-edma-memcpy-channel-allocation.patch
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