[meta-freescale] Community-maintained 3.14.16 kernel for i.MX6 devices
Carlos Rafael Giani
dv at pseudoterminal.org
Wed Aug 20 00:50:02 PDT 2014
On 08/19/2014 11:47 PM, John Weber wrote:
>
> On 8/19/14, 1:19 PM, Carlos Rafael Giani wrote:
>> Hello,
>>
>> I want to take a few minutes and mention in this mailing list the
>> amazing work of Jon Nettleton, Russell King, and others. This is 3.14
>> kernel, with FSL patches, upstream patches, memleak fixes, and
>> numerous improvements for stability that are not present in the
>> linux-imx kernels. The target hardware for this has been the SolidRun
>> product line so far (since the developers' time is limited, and they
>> don't have every imx6 device under the sun to test with), but putting
>> other devicetree files in it should not be difficult. Initial tests
>> on SolidRun hardware show noticeable improvements.
> This looks pretty awesome. Thanks for sharing. What versions of
> SolidRun HW is it supporting?
All of them. All CuBox-i and HummingBoard variants.
>>
>> To list a few enhancements:
>> * FEC ethernet performance, rated by Freescale at 470 Mbps; with
>> Russell King's improvements pushed to 630+ down and 500+ up
>> * lower I/O latencies
>> * SDHC patchset for better UHS-I support
>> * residue support for SDMA with FSL's custom firmware integrated to
>> work with HDMI and optical SPDIF
>> * higher DMA and GPU efficiency in general
>> * and of course the upstream 3.14 improvements over 3.10
>>
>> VPU and GPU have also successfully been tested with this kernel.
> Cool! What GPU and VPU tests have you been running?
Jon Nettleton, I, and others have been running XBMC with VPU
acceleration, Chromium with EGL-based drawing enabled + with my VPU
patches (which I will release here in a few days) running HTML5 Canvas
and WebGL tests, and gstreamer-imx with the EGL-based video sink that
uses the Vivante direct textures. Using the jellyfish test files:
http://jell.yfish.us/ , XBMC has shown to play h264 bitrates up to 100
Mbps (higher ones exhibit framedrops).
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