Robert Nelson told us that the uio pruss is not working on the kernel ti. If you want to have uio pruss you should use the bb kernel.
https://github.com/RobertCNelson/bb-kernel It's because Texas is working on a new pruss driver. Le dim. 13 déc. 2015 11:37, Strawson <[email protected]> a écrit : > Sadly I'm running into the same missing uio directories now that I'm > trying to get my beaglebone code that was stable on the 3.8 kernel and > Wheezy image. My old compiled dtbo wouldn't load with a 4.1 kernel until it > was recompiled. Even with it loaded, the following modules don't load: PRU, > eQEP, PWM, and GPIO_buttons. I spent today hacking together workarounds for > the latter 3, but the PRU still has me stumped. > > Looking closely, the am335x-boneblack.dtb file has changed quite a bit. > Once decompiled I have the following entries for the PRUSS: > > 3.8 kernel (2015-03-01 image): > pruss@4a300000 { > compatible = "ti,pruss-v2"; > ti,hwmods = "pruss"; > ti,deassert-hard-reset = "pruss", "pruss"; > reg = <0x4a300000 0x80000>; > ti,pintc-offset = <0x20000>; > interrupt-parent = <0x1>; > status = "disabled"; > interrupts = <0x14 0x15 0x16 0x17 0x18 0x19 0x1a 0x1b>; > linux,phandle = <0x35>; > phandle = <0x35>; > }; > > > 4.1 kernel (2015-11-12 image) > pruss@4a300000 { > compatible = "ti,am3352-pruss"; > ti,hwmods = "pruss"; > reg = <0x4a300000 0x2000 0x4a302000 0x2000 0x4a310000 0x3000 0x4a320000 > 0x2000 0x4a326000 0x2000>; > reg-names = "dram0", "dram1", "shrdram2", "intc", "cfg"; > interrupts = <0x14 0x15 0x16 0x17 0x18 0x19 0x1a 0x1b>; > #address-cells = <0x1>; > #size-cells = <0x1>; > ranges; > linux,phandle = <0xc6>; > phandle = <0xc6>; > > pru@4a334000 { > compatible = "ti,am3352-pru-rproc"; > reg = <0x4a334000 0x2000 0x4a322000 0x400 0x4a322400 0x100>; > reg-names = "iram", "control", "debug"; > mboxes = <0x28 0x44>; > linux,phandle = <0xc7>; > phandle = <0xc7>; > }; > > pru@4a338000 { > compatible = "ti,am3352-pru-rproc"; > reg = <0x4a338000 0x2000 0x4a324000 0x400 0x4a324400 0x100>; > reg-names = "iram", "control", "debug"; > mboxes = <0x28 0x45>; > linux,phandle = <0xc8>; > phandle = <0xc8>; > }; > }; > > > > The new entry is missing the "status = "disabled";" line which explains > why my old overlay file which simply changed "disabled" to "enabled" didn't > have an effect. Sadly manually adding the line into the 4.1 kernel version > of the am335x-boneblack.dts file and recompiling didn't help. Does anyone > know why this entry was changed and better yet how to get the PRUSS module > to load again? > > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
