06:02 <Tony> naobsd1, hi, my problem had resolved. ;)

06:03 <Tony> naobsd1, about the lcdc problem. the are four screen after resume.

06:04 <Tony> naobsd1, the real problem is that there are two way to init LCD timmings.

06:05 <Tony> naobsd1, uboot or kernel. If you enable uboot init LCD then kernel won't do init until resume.

06:07 <Tony> naobsd1, then, I disable the uboot, and fix the timming for LCD, the it works fine.

08:37 <rperier> mhhh chapter about "Linux memory management" in LDD v3 is... nice... not completly trivial but nice anyway (very well explained), I think that after this chapter I will have some non-contiguous parts of my brain :D

09:06 <naobsd1> Tony: sounds good :)

09:43 <sawtooth7> so the RKNanoD will support Linux ? :)

11:13 <rperier> sawtooth7: it might run uclinux (as the cortex-m3 has no MMU), however, it has few KB of RAM, so I don't think so

11:14 <rperier> it would be interesting to look at the "tinifycation project" for these kind of targets, imho (I don't know what is the project status...)

11:14 <rperier> well, except if you can add external RAM

11:17 <sawtooth7> i don't think you can according to what i see on the datasheet

12:46 <karlp> it's not super interesting to try running linux on them, just for th sake of it.

12:47 <karlp> there's a few other m4/m0 combo chips around, haven't seen an m3/m3 combo before that I recall though honestly

12:48 <sawtooth7> yeah they mention also FreeRTOS for it, i think it makes much more sense indeed

12:49 <sawtooth7> but seeing cortex m3 running at 300 MHz on a 55nm process is quite cool

12:53 <karlp> I guess they ddin't license m4f

12:57 <rperier> even if I agree with you (because linux is too big to run on these kind of SoCs and has a lot of unrequired features, and also because most of the time a good RTOS for IOT is enough) , that's very frustating. I mean, nowadays linux is able to run on everything except SoCs with very few Kb of RAM

12:58 <sawtooth7> yeah that chip is specifically designed for IOT, so i'm not sure what would be the use of linux here

13:01 <sawtooth7> i'm seeing a big craze about apple watch copies here in SZ

13:02 <sawtooth7> some use just very basic bluetooth IC to do everything (that is, not much)

13:02 <sawtooth7> but some use some cortex-A chips with 512MB ram, etc ... running android

13:03 <sawtooth7> and obviously those are bulky and don't look that great :D

13:05 <sawtooth7> those IOT stuff, they often just need an external wifi or BT chip and that's it

13:05 <karlp> rperier: pretty sure linux gave up on small socs. therew was a lkml post not too long ago something along the lines of, "if you want to run on such small hardware, you might be best sticking with linux 2.4.x"

13:09 <rperier> Yeah I know, I was thinking to recent linux kernel, the problem is that even if linux is a general purpose operating system, it is used by a thousand of embedded devices in the world, so try to improve its size would make sense, imho. (however, a lot of people disagree in mainline)

13:10 <rperier> you can also use projects like "uclinux" however, even uclinux is too big

13:11 <rperier> however, for very basic embedded software, an RTOS does the trick most of the time. I mean, if you only need few tasks, with few network communication an RTOS with a "round robin" scheduler algorithm is enough

13:12 <rperier> on the opposed side, if you need a lot of threads or process, with a complex network tasks , a lot of I/O and an huge load, linux is for you

13:13 <rperier> at least, this is my point of view

13:13 <sawtooth7> i agree

13:13 <sawtooth7> and if you need that many threads, it makes sense you want more RAM ...

13:39 <karlp> linux is for when you want netWORKing

14:05 <Tsou> Hi !

14:10 <Tsou> Did anyone ever use a RK3188-SOM-EVB from Olimex? I'm using it for the first time and have some difficulties to start the board

14:12 <sawtooth8> have you tried #olimex ? ;)

14:13 <rperier> +1, ask on #olimex first and feel free to ask here if they are unable to help you

14:13 <Tsou> Ah, I didn't think about that, I only saw #linux-rockchip, I'll try, thanks :)

18:13 <Tsou> They seem to be asleep on the #olimex ^^ Did anyone ever use RK3188? I'm trying to install linux on it but the process seems different from raspberry pi/arduino so I've some difficulties