From: Xing Zheng <zhengxing@rock-chips.com>
To: Shawn Lin <shawn.lin@rock-chips.com>, Vinod Koul <vinod.koul@intel.com>
Cc: Rob Herring <robh+dt@kernel.org>,
Huibin Hong <huibin.hong@rock-chips.com>,
devicetree@vger.kernel.org, dianders@chromium.org,
briannorris@chromium.org, Caesar Wang <wxt@rock-chips.com>,
dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-rockchip@lists.infradead.org
Subject: Re: [PATCH 3/3] dmaengine: pl330: support transfer unaligned with (burst len * burst size)
Date: Sun, 7 Aug 2016 17:21:31 +0800 [thread overview]
Message-ID: <57A6FD9B.7000203@rock-chips.com> (raw)
In-Reply-To: <1470365602-32586-4-git-send-email-shawn.lin@rock-chips.com>
Hi Shawn
On 2016年08月05日 10:53, Shawn Lin wrote:
> Currently pl330 doesn't support transfer which doesn't
> align with burst len * burst size. This should be only
> for single mode. Let's allow it for busrt mode if available.
>
> e.g. transfers 0x10002 bytes:
> First loop 256*16*16=0x10000, burst size is 1, burst length is 16.
> Then the second loop 2 bytes, burst size is 1, burst length is 1.
>
> f0041000: DMAMOV CCR 0xbc02f1
> f0041006: DMAMOV SAR 0xdd6c0000
> f004100c: DMAMOV DAR 0xff1d0400
> f0041012: DMALP_0 15
> f0041014: DMALP_1 255
> f0041016: DMAWFPB 12
> f0041018: DMALDA
> f0041019: DMASTPB 12
> f004101b: DMAFLUSHP 12
> f004101d: DMALPENDA_1 bjmpto_7
> f004101f: DMALPENDA_0 bjmpto_b
> f0041021: DMAMOV CCR 0x800201
> f0041027: DMALP_1 1
> f0041029: DMAWFPB 12
> f004102b: DMALDA
> f004102c: DMASTPB 12
> f004102e: DMAFLUSHP 12
> f0041030: DMALPENDA_1 bjmpto_7
> f0041032: DMASEV 0
> f0041034: DMAEND
>
> Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
>
Tested-by: Xing Zheng <zhengxing@rock-chips.com>
Thanks.
--
- Xing Zheng
prev parent reply other threads:[~2016-08-07 9:21 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-05 2:53 [PATCH 0/3] Support burst request by peripherals Shawn Lin
2016-08-05 2:53 ` [PATCH 1/3] dt/bindings: arm-pl330: add description of arm,pl330-periph-burst Shawn Lin
2016-08-05 3:34 ` Vinod Koul
2016-08-05 7:25 ` Shawn Lin
2016-08-09 8:39 ` Lars-Peter Clausen
2016-08-09 9:12 ` Shawn Lin
2016-08-17 8:11 ` Shawn Lin
2016-08-19 2:45 ` Vinod Koul
2016-08-21 1:00 ` Shawn Lin
2016-08-22 6:04 ` Vinod Koul
2016-08-05 2:53 ` [PATCH 2/3] dmaengine: pl330: enable burst mode by parsing dt Shawn Lin
2016-08-07 9:20 ` Xing Zheng
2016-08-05 2:53 ` [PATCH 3/3] dmaengine: pl330: support transfer unaligned with (burst len * burst size) Shawn Lin
2016-08-07 9:21 ` Xing Zheng [this message]
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