[Arm-netbook] qualcom snapdragon 410

[Luke Kenneth Casson Leighton]

[*] https://developer.qualcomm.com/hardware/dragonboard-410c
("Free graphics possible" according to the Debian Wiki's ARM 64 port page...
https://wiki.debian.org/Arm64Port

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.

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[GaCuest]

[*] https://developer.qualcomm.com/hardware/dragonboard-410c
("Free graphics possible" according to the Debian Wiki's ARM 64 port page...
https://wiki.debian.org/Arm64Port

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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[Luke Kenneth Casson Leighton]

Post by GaCuest
- 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.

Post by GaCuest
- Do you have support/drivers of the GPU in Linux (like OpenGL ES 3.0)?

yes.

Post by GaCuest
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.

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[GaCuest]

Post by GaCuest
- 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.

Post by GaCuest
- Do you have support/drivers of the GPU in Linux (like OpenGL ES 3.0)?

yes.

Post by GaCuest
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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[Luke Kenneth Casson Leighton]

Post by GaCuest

Post by GaCuest
- 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.

Post by GaCuest
- Do you have support/drivers of the GPU in Linux (like OpenGL ES 3.0)?

yes.

Post by GaCuest
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.

Post by GaCuest
Adreno seems to have better support than Mali, so it seems a better choice.
Freedreno also supports other Adreno GPU?

afaik.

Post by GaCuest
RAM?

lots.

Post by GaCuest
It will be interesting to see this new EOMA-68.

http://www.aliexpress.com/store/product/HOT-NEW-IC-MSM8916-5VV-MSM8916-8916-5VV-8916-QUALCOM-BGA/1394673_32342302837.html

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_20151128063810&SearchText=MSM8916+IC

l.

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[Luke Kenneth Casson Leighton]

http://linaro.co/db410c-schematics

schematics for the dragonboard.... looking good so far.

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[Luke Kenneth Casson Leighton]

https://developer.qualcomm.com/qfile/29367/lm80-p0436-35_a_pm8916-pm8916-1_device_spec.pdf

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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