Hi Petr,
On Mon, Jan 09, 2017 at 08:57:51PM +0100, Petr Štetiar wrote:
according to a lot of sources one would think, that EC20 is based around the Qualcomm MDM9615, but the picture of naked EC20[1] clearly shows, that there is Qualcomm MDM9215 chip soldered on the board. Which source is true? :-) Or it's just a wrong text on that BGA?
I think it is simply the fact that (at least) for the Linux on the Cortex-A5 it doesn't make any difference whether it's running on a 9615 or a 9215. The difference is presumably primarily in the cellular radio interface and possibly DSP capacity? From the few publicly available information the 9615 adds Ev-DO (3GPP2) capability, while the 9215 is GSM/UMTS/LTE (3GPP) only?
btw: I just created a new mailing list for any future public discussion on the Qualcomm Linux based cellular modems, see qc-linux-modems@lists.osmocom.org and/or https://lists.osmocom.org/mailman/listinfo/qc-linux-modems
One more mail before going to bed:
On Tue, Jan 10, 2017 at 03:03:37AM +0100, Harald Welte wrote:
On Mon, Jan 09, 2017 at 08:57:51PM +0100, Petr Štetiar wrote:
according to a lot of sources one would think, that EC20 is based around the Qualcomm MDM9615, but the picture of naked EC20[1] clearly shows, that there is Qualcomm MDM9215 chip soldered on the board. Which source is true? :-) Or it's just a wrong text on that BGA?
I think it is simply the fact that (at least) for the Linux on the Cortex-A5 it doesn't make any difference whether it's running on a 9615 or a 9215. The difference is presumably primarily in the cellular radio interface and possibly DSP capacity? From the few publicly available information the 9615 adds Ev-DO (3GPP2) capability, while the 9215 is GSM/UMTS/LTE (3GPP) only?
See https://www.qualcomm.com/media/documents/files/gobi-product-specs.pdf
The 9200 is 3GPP-only and 9600 adds 3GPP2/EVDO, both without voice. The 9215 and 9615 are the voice-enabled versins of both.
Harald Welte laforge@gnumonks.org [2017-01-10 03:03:37]:
Hi,
I think it is simply the fact that (at least) for the Linux on the Cortex-A5 it doesn't make any difference whether it's running on a 9615 or a 9215.
indeed, but I was rather asking this, because it's probably better to look around for documentation for 9215 then for 9615. Maybe some blocks are going to be same, but who knows. I should probably download finaly the kernel sources and look around to find this question myself :-)
The difference is presumably primarily in the cellular radio interface and possibly DSP capacity? From the few publicly available information the 9615 adds Ev-DO (3GPP2) capability, while the 9215 is GSM/UMTS/LTE (3GPP) only?
Maybe it's the only difference, yes.
btw: I just created a new mailing list for any future public discussion on the Qualcomm Linux based cellular modems
Good, thanks!
-- ynezz
qc-linux-modems@lists.osmocom.org
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Harald Welte -
Petr Štetiar