2013-06-08 00:22 <unclouded> does the latest u-boot for NanoNote support booting from an MMC formatted as ext4?
2013-06-08 00:42 <unclouded> answering my own question: Yes.  no idea how old my u-boot was previously.  maybe even factory since I've been so scared to update it
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2013-06-08 08:35 <larsc> mth: try to at least confine the ifdef to only one place, e.g. #ifdef JZ4770 void phy_set_power(int power) { ... } #else void phy_set_power(int power) {} #endif
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2013-06-08 09:43 <mth> larsc: I agree
2013-06-08 09:44 <mth> I've got a cleaned up version now, but I guess there is no point in upstreaming this until the rest of the 4770 support is ready, right?
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2013-06-08 09:55 <larsc> atleast the core support which defines the function should be there
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2013-06-08 12:13 <mth> larsc: #define JZ_GPIO_PWM0 JZ_GPIO_PORTD(23)
2013-06-08 12:13 <mth> on the JZ4770, the pin assignment is different
2013-06-08 12:13 <mth> so I guess the macro has to be renamed?
2013-06-08 12:14 <mth> (from arch/mips/include/asm/mach-jz4740/gpio.h)
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2013-06-08 15:07 <larsc> the macro should probably not be used outside of board code
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2013-06-08 15:52 <mth> in that case, we'd have to insert some kind of indirection between the macro and the pwm driver
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2013-06-08 15:55 <larsc> yes
2013-06-08 15:55 <larsc> I'm going to add pinctrl support to jz4740
2013-06-08 15:56 <larsc> this is espcially important for anything >jz4740 since you can have multiple options to which pin you can actually route a signal
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2013-06-08 15:58 <larsc> pinctrl is pretty much the same as our jz4740_gpio_* api, except that it is more generi
2013-06-08 15:58 <larsc> c
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2013-06-08 16:46 <mth> https://github.com/gcwnow/linux/commit/8a6a80c5387679ed73ab86df5110d0cd80b8bb0c
2013-06-08 16:47 <mth> the big green block in the middle is how I currently solved the "multiple options to route a singal" for the msc on the 4770
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2013-06-08 16:49 <mth> speaking of msc, there is slot-gpio which is a generic implementation of read-only and change detect based on gpio pins
2013-06-08 16:49 <mth> https://github.com/gcwnow/linux/commit/1e725fac79e3d8fc1b30b35d1d0323f24c2cef39
2013-06-08 16:49 <mth> that could be used in the 4740 driver as well
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2013-06-08 17:02 <mth> larsc: you said "board code" for the pwm-to-gpio mapping, but that mapping is inside the SoC, not on the board
2013-06-08 17:03 <mth> you could do it in pdata, but then every board with the same SoC would just be using the same table
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2013-06-08 17:09 <viric> are any of you playing with 16MB systems?
2013-06-08 17:10 <mth> no, the smallest I have around here is 32MB
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2013-06-08 17:11 <viric> I think openwrt deprecated all 16MB systems :(
2013-06-08 17:12 <viric> at backfire time (2.6.32)
2013-06-08 17:12 <viric> I wonder if anyone is making a distribution that will run on 16MB
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2013-06-08 17:22 <larsc> mth: since you can route it to multiple pins it is board specific
2013-06-08 17:23 <larsc> mth: yea, I already have slot-gpio patches for the jz4740 mmc driver
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2013-06-08 17:24 <viric> is there anything that can tell where the kernel size comes from?
2013-06-08 17:24 <viric> what part how much contributes
2013-06-08 17:25 <mth> larsc: pwm routing is static, isn't it?
2013-06-08 17:26 <viric> hm just found http://www.elinux.org/Kernel_Size_Tuning_Guide
2013-06-08 17:26 <mth> at least on the 4770 there is exactly one pwm pin per timer
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2013-06-08 17:36 <viric> I guess there is no OS maintained with systems < 32MB of RAM
2013-06-08 17:36 <viric> free os
2013-06-08 17:38 <whitequark> FreeDOS?
2013-06-08 17:38 <whitequark> FreeRTOS? :)
2013-06-08 17:39 <viric> on mips? :)
2013-06-08 17:44 <whitequark> the latter, why not?
2013-06-08 17:44 <whitequark> I see your point, though.
2013-06-08 17:45 <whitequark> I think that vxworks and similar stuff still works well on 16MB systems. maybe even smaller.
2013-06-08 17:45 <whitequark> QNX? not sure
2013-06-08 17:48 <wpwrak> contiki ? :)
2013-06-08 17:48 <wpwrak> if you have that much memory, you could probably run regular linux. else, there is uclinux
2013-06-08 17:49 <viric> well, I'd like to have device drivers too ;)
2013-06-08 17:49 <whitequark> ugh, contiki
2013-06-08 17:49 <viric> wpwrak: a 3.x linux openwrt leaves little space
2013-06-08 17:49 <whitequark> remind me again why exactly an OS for resource-constrained wireless sensors must have a VNC server and GUI?..
2013-06-08 17:49 <viric> and I have mmu. I don't want to give up on mmu
2013-06-08 17:50 <viric> whitequark: it evolved
2013-06-08 17:50 <whitequark> viric: I call that devolution
2013-06-08 17:50 <viric> why exactly an OS that could run fine on 8MB of RAM evolved to requiring 32MB?
2013-06-08 17:51 <wpwrak> whitequark: vnc ? not sure if we're talking about the same thing :)
2013-06-08 17:51 <whitequark> I would guess that it got optimized for less resource-constrained workloads
2013-06-08 17:51 <whitequark> viric: ^
2013-06-08 17:52 <viric> maybe also contiki
2013-06-08 17:52 <viric> :)
2013-06-08 17:52 <whitequark> wpwrak: https://github.com/contiki-os/contiki/blob/master/apps/vnc/vnc.c
2013-06-08 17:52 <whitequark> I wish I was kidding.
2013-06-08 17:52 <whitequark> 90% of contiki is useless bloat
2013-06-08 17:52 <wpwrak> oh well, application
2013-06-08 17:52 <wpwrak> you could add libreoffice to owrt if you wanted
2013-06-08 17:53 <whitequark> and the other 10% are highly specific for AVRs
2013-06-08 17:53 <whitequark> what is this, 2000?
2013-06-08 17:53 <viric> "for the fun" looks to me like a good reason, in any case
2013-06-08 17:54 <whitequark> I won't even talk about buffer overflows, etc.
2013-06-08 17:58 <wpwrak> i've heard of problem with loss of interrupts on contiki. not sure on what platform(s), though
2013-06-08 17:59 <whitequark> I personally would blame lack of design :|
2013-06-08 18:00 <whitequark> in unrelated news. I disassembled my notebook (proof that you can make something as thin as macbook air AND make it repairable) and discovered a peculiar feature
2013-06-08 18:00 <whitequark> the keyboard is clamped hard to the upper part of the case
2013-06-08 18:01 <whitequark> had to buy a replacement from asus for $110
2013-06-08 18:01 <viric> did you break the keyboard?
2013-06-08 18:01 <whitequark> the Right button stopped working
2013-06-08 18:01 <whitequark> dismantling it and blowing off the dust didn't help
2013-06-08 18:02 <viric> ok
2013-06-08 18:02 <whitequark> weirdest part... I went to their "official service center"
2013-06-08 18:02 <whitequark> they said that replacing keyboard would take 7-10 DAYS
2013-06-08 18:02 <whitequark> what the fuck
2013-06-08 18:02 <whitequark> will these guys literally buy a replacement from asus spare parts store and reassemble the whole critter?
2013-06-08 18:02 <viric> an accurate task
2013-06-08 18:03 <whitequark> I can do that in a hour, myself
2013-06-08 18:03 <whitequark> well, two hours
2013-06-08 18:03 <whitequark> paying some dude to be a screwdriver operator? wt
2013-06-08 18:03 <whitequark> f
2013-06-08 18:03 <viric> you are just the wrong kind of costumer.
2013-06-08 18:04 * whitequark shrugs
2013-06-08 18:04 <whitequark> I would happily pay twice the cost of the replacement, IF they could do it "right now"
2013-06-08 18:04 <whitequark> but with this kind of... service, it's really more efficient to do that myself
2013-06-08 18:06 * whitequark just realized that he would likely never again pay for repairing electronics
2013-06-08 18:07 <whitequark> (except maybe for SMT jobs. maybe)
2013-06-08 18:08 <wpwrak> it's more fun that way :)
2013-06-08 18:08 <whitequark> wpwrak: (that) doing it myself, that is?
2013-06-08 18:09 <wpwrak> yup
2013-06-08 18:09 <whitequark> it isn't even about fun. I simply cannot afford to lose my notebook for a week. not now, at least
2013-06-08 18:09 <wpwrak> of course, as time goes by, you'll get tired of things that you have to do over and over again. so you may get bored enough with them to outsource them.
2013-06-08 18:09 <wpwrak> yeah, there's also efficiency
2013-06-08 18:10 <whitequark> and when I'm faced with a choice of setting up another machine for a week <> reassembling it myself... it's obvious
2013-06-08 18:11 <wpwrak> when the choice is between open-fix-close (2 h) and send/deposit, wait, receive/retrieve, test, complain, repeat ... then the selection isn't too hard
2013-06-08 18:11 <whitequark> :)
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2013-06-08 18:12 <whitequark> I was impressed by some guy at a flea market who fixed audio jack on my Galaxy S II. the jack is likely to be custom-made for this phone.
2013-06-08 18:12 <whitequark> so, in just about three hours he found a replacement and resoldered it
2013-06-08 18:12 <whitequark> I wonder if he robbed someone with the same phone and disassembled it.
2013-06-08 18:13 <whitequark> well, whatever... he can do anything if he fixes it quickly enough :)
2013-06-08 18:15 <wpwrak> remember, if you buy from robbers, you confirm their business model and you may be the next source of spare parts
2013-06-08 18:17 <whitequark> oh yes, a well-known ethical problem
2013-06-08 18:18 <whitequark> one could also say that someone else would buy it, anyway
2013-06-08 18:21 <wpwrak> even then, you're increasing the demand. the invisible hand of the market will take care of adapting the supply accordingly.
2013-06-08 18:21 <larsc> mth: hm, yes, looks like there is only one possible signal per pwm signal, so it is SoC specific
2013-06-08 18:23 <larsc> whitequark: here you actually be charged with buying stolen goods
2013-06-08 18:24 <whitequark> larsc: hmm
2013-06-08 18:24 <whitequark> that was a joke
2013-06-08 18:24 <whitequark> though, when I think about it... well.
2013-06-08 18:25 <whitequark> no idea
2013-06-08 18:25 <whitequark> larsc: how would I clear myself from charges? do something to have a reasonable knowledge of the spare parts to ensure they're not stolen? or what?
2013-06-08 18:26 <larsc> yes
2013-06-08 18:28 <whitequark> interesting
2013-06-08 18:28 <larsc> if you can't distinguish it from a legitime sale you are fine
2013-06-08 18:29 <larsc> but e.g. if somebody tries to sell you something at lets say 10% of it's actual value you are supposed to get suspicious
2013-06-08 18:29 <whitequark> well. it depends on what's "legitimate". the guy doesn't run an official service center (obviously). but I can totally see how someone with a soldering iron and a bag of dead phones could do his job
2013-06-08 18:29 <whitequark> ah I see
2013-06-08 18:29 <whitequark> is $20 a lot for replacing an audio jack? :)
2013-06-08 18:30 <larsc> I don't know
2013-06-08 18:30 <whitequark> exactly
2013-06-08 18:31 <larsc> it's then up to the judges to decide whether you should have been suspicious or not
2013-06-08 18:32 <whitequark> I suppose this makes sense
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