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2013-08-21 19:40 <apelete> Hello
2013-08-21 19:40 <apelete> larsc: are you there ?
2013-08-21 19:40 <larsc> yes
2013-08-21 19:40 <apelete> Hi
2013-08-21 19:41 <larsc> hi
2013-08-21 19:41 <apelete> I'm trying to test the musb glue layer skeleton I' ve written: http://seketeli.fr/git/~apelete/qi-kernel.git/commit/?h=jz4740-udc
2013-08-21 19:41 <apelete> when I load it nothing happens
2013-08-21 19:42 <larsc> did you create a platform device for it in qi_lb60.c?
2013-08-21 19:43 <apelete> no, should I ?
2013-08-21 19:44 <larsc> yes, or better just change the name of the jzudc device
2013-08-21 19:45 <larsc> in arch/mips/jz4740/platform.c
2013-08-21 19:46 <apelete> I don't get it. qi_lb60.c seems to be asoc related, why should I create a platform device there ?
2013-08-21 19:47 <larsc> board-qi_lb60.c, sorry
2013-08-21 19:58 <apelete> in board-qi_lb60.c, I found:
2013-08-21 19:58 <apelete> static struct platform_device *jz_platform_devices[] __initdata = {
2013-08-21 19:58 <apelete> 	&jz4740_udc_device,
2013-08-21 19:58 <apelete> which correspond to the following in arch/mips/jz4740/platform.c:
2013-08-21 19:58 <apelete> struct platform_device jz4740_udc_device = {
2013-08-21 19:58 <apelete> 	.name		= "jz-udc",
2013-08-21 19:58 <apelete> 
2013-08-21 20:00 <larsc> yes, replace "jz-udc" with "musb-jz4740"
2013-08-21 20:02 <apelete> okay, so I don't need to modifiy drivers/usb/musb/Makefile and drivers/usb/musb/Kconfig to add rules for musb-jz4740 ?
2013-08-21 20:03 <apelete> because all the musb glue layers seem to have some sort of configuration options in those latter files
2013-08-21 20:05 <apelete> and they (the other musb glue layers) all depend on the USB_MUSB_HDRC kernel config parameter
2013-08-21 20:10 <apelete> I compiled musb-jz4740 out of tree and loaded it, but nothing happened. so I think I'm missing the corresponding USB_MUSB_HDRC driver in the kernel: I think musb-jz4740 should be used by USB_MUSB_HDRC driver
2013-08-21 20:10 <apelete> larsc: am I mistaking here ?
2013-08-21 20:16 <larsc> yes, you need to load the musb module as well
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2013-08-21 20:19 <apelete> ok. so I need to modify drivers/usb/musb/Makefile and drivers/usb/musb/Kconfig as well, because the musb module cannot be activated in the menuconfig without a platform glue layer
2013-08-21 20:23 <apelete> larsc: I do not know what to put in the drivers/usb/musb/Kconfig for musb-jz4740 exactly, I explain:
2013-08-21 20:24 <apelete> let's take for instance the platform glue layer config section of a TI controller in drivers/usb/musb/Makefile and drivers/usb/musb/Kconfig:
2013-08-21 20:24 <apelete> choice
2013-08-21 20:24 <apelete> 
2013-08-21 20:24 <apelete> 	prompt "Platform Glue Layer"
2013-08-21 20:24 <apelete> config USB_MUSB_DAVINCI
2013-08-21 20:24 <apelete> 	tristate "DaVinci"
2013-08-21 20:24 <apelete> 	depends on ARCH_DAVINCI_DMx
2013-08-21 20:24 <apelete> 
2013-08-21 20:24 <apelete> 
2013-08-21 20:25 <apelete> larsc: it depends on ARCH_DAVINCI_DMx. what should musb-jz4740 depends on ?
2013-08-21 20:26 <apelete> I'm thinking of something like ARCH_MIPS maybe, but not sure about that
2013-08-21 20:28 <apelete> s/ config section of a TI controller in drivers/usb/musb/Makefile and drivers/usb/musb/Kconfig / config section of a TI controller indrivers/usb/musb/Kconfig /
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2013-08-21 20:53 <larsc> depends on MACH_JZ4740 should work
2013-08-21 21:01 <apelete> ok thanks
2013-08-21 21:02 <apelete> larsc: I won't bother you longer, will try those modifications first and see what happens :)
2013-08-21 21:02 <apelete> thanks a lot for your time
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2013-08-21 21:05 <larsc> no problem
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2013-08-21 21:53 <DocScrutinizer05> MUSB WAAAAAH!!!
2013-08-21 21:55 <DocScrutinizer05> don't tell me JZ4740 is using the fsckdup mentalgrafucks musb core
2013-08-21 21:56 <DocScrutinizer05> had my year of torture trying to fix stuff in drivers for that crap
2013-08-21 21:56 <DocScrutinizer05> ask PaulFertser what he thinks about musb-hdrc ;-P
2013-08-21 21:58 <DocScrutinizer05> ARCH_DAVINCI is OMAP36xx, no?
2013-08-21 21:59 <DocScrutinizer05> actually Nokia's idea of a OMAP36xx platform
2013-08-21 21:59 <DocScrutinizer05> afaik
2013-08-21 22:00 <larsc> davinci is davinci
2013-08-21 22:00 <DocScrutinizer05> anyway DAVINCI been the codename for the N9(50) prototypes at Nokia
2013-08-21 22:01 <larsc> they sometimes share IP cores between davinci and omap though
2013-08-21 22:04 <DocScrutinizer05> so what's the "top" meaning of davinci term? A SoC, a platform, a project, a son of flying spaghetti monster?
2013-08-21 22:05 <larsc> family of SoCs
2013-08-21 22:05 <DocScrutinizer05> mhm
2013-08-21 22:05 <DocScrutinizer05> thanks
2013-08-21 22:06 <DocScrutinizer05> right, I seem to recall something at TI's website
2013-08-21 22:06 <DocScrutinizer05> might be wrong though
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2013-08-21 22:10 <DocScrutinizer05> thought as much: http://www.ti.com/sitesearch/docs/universalsearch.tsp?searchTerm=DAVINCI%20PROCESSORS&linkId=1
2013-08-21 22:16 <DocScrutinizer05> http://processors.wiki.ti.com/index.php/Category:DaVinci_Linux looks actually not too bad
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2013-08-21 23:16 <mth> apelete: we've got a JZ4770 kernel here that uses the musb driver: https://github.com/gcwnow/linux
2013-08-21 23:16 <mth> the 4770 version can do OTG, which I guess the 4740 version cannot, so it's probably not exactly the same
2013-08-21 23:17 <mth> the glue is slightly cleaned up compared to Ingenic's code, but it's not great yet
2013-08-21 23:17 <mth> it does work reliably though