On Thu, Jul 01, 2021 at 06:41:26PM +0200, Stefan Brüns wrote: > On Donnerstag, 24. Juni 2021 09:28:59 CEST Johan Hovold wrote: > > [ +CC: Daniele and Bjørn ] > > > > On Fri, Jun 11, 2021 at 03:58:41PM +0200, Stefan Brüns wrote: > > > The devices exposes two different interface compositions: > > > - QDL mode, single interface > > > - MBIM mode, MBIM class compliant plus AT/DM(/ADB) > > > > > > Current firmware versions (up to 01.07.19) do not expose an NMEA port. > > > > We already have at least one SDX55 based modem (FN980) supported by the > > option driver. Any particular reason why you chose to add it to qcserial > > instead of option? > > > Support for qualcomm based modems are spread over option and qcserial. All > other Sierra devices are supported by qcserial. Ok, but we may still end up adding this one to option if matching on the interface protocol works. > > Note that the FN980 also needs the ZLP flag set in QDL (flashing) mode, > > I'd assume this one needs it too. > > It depends if you implement the Firehose protocol in accordance to the > specification or not. 80-NG319-1 (Firehose specification) explicitly states to > pad any XML command packet which is an exact multiple of 512 bytes with an > extra newline or other whitespace character. Thanks for the details. If you're referring to the device-side implementation it seems a bit fragile to not just set the ZLP flag since apparently there are some non-standard implementations out there. But sure, we can do that later if needed. Johan
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