[*] https://developer.qualcomm.com/hardware/dragonboard-410c
("Free graphics possible" according to the Debian Wiki's ARM 64 port page...
Adreno GPU. niiiice. minimalist hardware datasheet (with pinouts but not mechanical layout) on arrow electronics, as well as a five THOUSAND page datasheet on the hardware registers.
this might actually qualify as an FSF-Endorseable processor, and, with a bit of work, might actually be a great candidate for an EOMA68 CPU Card. it will need a MIPI-to-RGB/TTL converter IC on-board. there's I2C, UART, SPI, 2 SDCs (one is eMMC, the other is SD/MMC), only one USB port (bleeeergh!), which means that a USB Hub IC is needed..
so we're looking at... whatever the SoC cost is (knowing qualcomm they'll want around the $12 mark for it), plus USB Hub IC and components ($1.50), plus a MIPI-to-RGB/TTL converter IC (could be as high as $2.50), so we'd be looking at what.... $15....
... and the allwinner A64 we know is only $5. with 2 USB interfaces, RGB/TTL output....
whyy, god, whyyyyy... :)
l.
En 26 de noviembre de 2015 en 23:59:02, Luke Kenneth Casson Leighton (lkcl@lkcl.net) escrito:
[*] https://developer.qualcomm.com/hardware/dragonboard-410c
("Free graphics possible" according to the Debian Wiki's ARM 64 port page...
Adreno GPU. niiiice. minimalist hardware datasheet (with pinouts but not mechanical layout) on arrow electronics, as well as a five THOUSAND page datasheet on the hardware registers.
this might actually qualify as an FSF-Endorseable processor, and, with a bit of work, might actually be a great candidate for an EOMA68 CPU Card. it will need a MIPI-to-RGB/TTL converter IC on-board. there's I2C, UART, SPI, 2 SDCs (one is eMMC, the other is SD/MMC), only one USB port (bleeeergh!), which means that a USB Hub IC is needed..
so we're looking at... whatever the SoC cost is (knowing qualcomm they'll want around the $12 mark for it), plus USB Hub IC and components ($1.50), plus a MIPI-to-RGB/TTL converter IC (could be as high as $2.50), so we'd be looking at what.... $15....
... and the allwinner A64 we know is only $5. with 2 USB interfaces, RGB/TTL output....
whyy, god, whyyyyy... :)
There is a EOMA-68 with Allwinner A20. So you have a cheap EOMA-68.
In my opinion, a EOMA-68 with Qualcomm it is a good idea, because is more powerful than Allwinner A64 (Adreno 306 is better than Mali 400 MP2).
I have some doubts: - EOMA-68 has enough power for the Snapdragon 410? - Do you have support/drivers of the GPU in Linux (like OpenGL ES 3.0)?
In my opinion, there should be a EOMA-68 with a more basic and cheap hardware (Allwinner series) and other EOMA-68 with a more powerful and expensive hardware (Snapdragon series).
l.
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On Fri, Nov 27, 2015 at 10:54 AM, GaCuest gacuest@gmail.com wrote:
I have some doubts:
- EOMA-68 has enough power for the Snapdragon 410?
A53 goes power-hungry at 1ghz (big voltage jump). at 900mhz or below, it's fine. A53 is 15% more power-performance-hungry that the A7.
- Do you have support/drivers of the GPU in Linux (like OpenGL ES 3.0)?
yes.
In my opinion, there should be a EOMA-68 with a more basic and cheap hardware (Allwinner series) and other EOMA-68 with a more powerful and expensive hardware (Snapdragon series).
agreed. it's also FSF-Endorseable, which is awesome.
l.
En 27 de noviembre de 2015 en 17:43:27, Luke Kenneth Casson Leighton (lkcl@lkcl.net) escrito:
On Fri, Nov 27, 2015 at 10:54 AM, GaCuest wrote:
I have some doubts:
- EOMA-68 has enough power for the Snapdragon 410?
A53 goes power-hungry at 1ghz (big voltage jump). at 900mhz or below, it's fine. A53 is 15% more power-performance-hungry that the A7.
- Do you have support/drivers of the GPU in Linux (like OpenGL ES 3.0)?
yes.
In my opinion, there should be a EOMA-68 with a more basic and cheap hardware (Allwinner series) and other EOMA-68 with a more powerful and expensive hardware (Snapdragon series).
agreed. it's also FSF-Endorseable, which is awesome.
l.
I know that A53 is power-hungry. My question is if Adreno 306 consumes more or less than Mali400 MP2.
Adreno seems to have better support than Mali, so it seems a better choice. Freedreno also supports other Adreno GPU?
RAM?
It will be interesting to see this new EOMA-68.
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On Fri, Nov 27, 2015 at 9:20 PM, GaCuest gacuest@gmail.com wrote:
En 27 de noviembre de 2015 en 17:43:27, Luke Kenneth Casson Leighton (lkcl@lkcl.net) escrito:
On Fri, Nov 27, 2015 at 10:54 AM, GaCuest wrote:
I have some doubts:
- EOMA-68 has enough power for the Snapdragon 410?
A53 goes power-hungry at 1ghz (big voltage jump). at 900mhz or below, it's fine. A53 is 15% more power-performance-hungry that the A7.
- Do you have support/drivers of the GPU in Linux (like OpenGL ES 3.0)?
yes.
In my opinion, there should be a EOMA-68 with a more basic and cheap hardware (Allwinner series) and other EOMA-68 with a more powerful and expensive hardware (Snapdragon series).
agreed. it's also FSF-Endorseable, which is awesome.
l.
I know that A53 is power-hungry. My question is if Adreno 306 consumes more or less than Mali400 MP2.
don't know.
Adreno seems to have better support than Mali, so it seems a better choice. Freedreno also supports other Adreno GPU?
afaik.
RAM?
lots.
It will be interesting to see this new EOMA-68.
http://www.aliexpress.com/store/product/HOT-NEW-IC-MSM8916-5VV-MSM8916-8916-...
well, it's made it out of the restricted distribution chain and into the mainstream bazaar.
haha, there's even templates for BGA stencilling available so people can replace the IC: http://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20151128063...
l.
http://linaro.co/db410c-schematics
schematics for the dragonboard.... looking good so far.
https://developer.qualcomm.com/qfile/29367/lm80-p0436-35_a_pm8916-pm8916-1_d...
PM8916 power management datasheet.... interestingly, qualcomm is violating google's usage conditions by deliberately manipulating search results - "PM8916 datasheet" comes up with a top hit of "Qualcomm 4K datasheet". had to find the actual PM8916 datasheet with "PM8916 datasheet filetype:pdf"
l.
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Luke Kenneth Casson Leighton