Hi Jose Valenzuela San Juan, Thank You very much. Your suggestion solved my issue.
Earlier I tried something like this as per the following video for pwm enabling - https://www.youtube.com/watch?v=MT3wjlzQhNQ. I tried config-pin P9.17 i2c config-pin P9.18 i2c But that was not successful. Now I got the correct solution config-pin p9-17 i2c config-pin p9-18 i2c from You. Thank You. If You provide some documents which describes this, that would be more appreciated. Thanks & Regards, Sajeevan.K On Thursday, October 12, 2017 at 7:00:59 PM UTC+5:30, Jose Valenzuela San Juan wrote: > > What I do is enable them using config-pin like so (pins p9-17 & p9-18 in > the example): > sudo config-pin p9-17 i2c > sudo config-pin p9-18 i2c > by default those are configured as gpio. This settings are lost when you > restart, but you can autoexecute those commands every boot. > > You can see how are configured (or check if the previos command worked) > with the -q option: > config-pin -q p9-17 > > > list available modes with -l: > config-pin -l p9-17 > > > or get detailed info with -i: > config-pin -i p9-17 > > > That's what i am using for the moment, but I like to also know for a more > correct/goodpractice/efficient/permanent/lowlevel/before-boot/devicetree/uboot > > way of setting those parameters. > > Other thing: the latest images were updated check > https://beagleboard.org/latest-images. > Also there are monthly and weekly releases: https://rcn-ee.net > You most probably need to update u-boot to go from > bone-debian-8.7-lxqt-4gb-armhf-2017-03-19-4gb.img to the latest. > > Regards, > > On Thursday, October 12, 2017 at 9:07:06 AM UTC-3, sajeevan k wrote: >> >> Hi all, >> >> I would like to use both I2C1 and I2C2 which are available in Beaglebone >> Black P9 connector. I could make I2C2 working. But so far I couldn't make >> I2C1 working. >> >> In /boot/uEnv.txt, I have not commented the line >> cmdline=coherent_pool=1M net.ifnames=0 quiet cape_universal=enable >> >> That means Universal cap is active. >> >> So I cannot use the command >> >> echo BB-I2C1 > /sys/devices/platform/bone_capemgr/slots >> >> >> for enabling I2C1. >> >> >> I would like to make Universal Cape enabled, other wise I will not be >> able to make the P9_14 and P9_16 as PWMs. >> >> >> >> So my question is, is there anyway to enable I2C1, while Universal Cap is >> enabled? >> >> >> I am using the latest debian image - >> bone-debian-8.7-lxqt-4gb-armhf-2017-03-19-4gb.img and BBB Rev C. >> >> >> >> I have examined the am335x-boneblack.dts file (got from coverting >> /boot/dtbs/4.4.54-ti-r93/am335x-boneblack.dtb). >> >> >> In this .dts file i2c1 portion is as shown below. >> >> >> >> i2c@4802a000 { >> compatible = "ti,omap4-i2c"; >> #address-cells = <0x1>; >> #size-cells = <0x0>; >> ti,hwmods = "i2c2"; >> reg = <0x4802a000 0x1000>; >> interrupts = <0x47>; >> status = "disabled"; >> linux,phandle = <0xa0>; >> phandle = <0xa0>; >> }; >> >> >> pinmux_i2c2_pins { >> pinctrl-single,pins = >> <0x178 0x33 0x17c 0x33>; >> linux,phandle = <0x35>; >> phandle = <0x35>; >> }; >> >> >> I modified it as below. >> >> >> >> >> i2c@4802a000 { >> compatible = "ti,omap4-i2c"; >> #address-cells = <0x1>; >> #size-cells = <0x0>; >> ti,hwmods = "i2c2"; >> reg = <0x4802a000 0x1000>; >> interrupts = <0x47>; >> status = "okay"; >> pinctrl-names = "default"; >> pinctrl-0 = <0x35>; >> clock-frequency = <0x61a80>; >> linux,phandle = <0xa0>; >> phandle = <0xa0>; >> }; >> >> >> pinmux_i2c2_pins { >> pinctrl-single,pins = >> <0x178 0x33 0x17c 0x33>; >> linux,phandle = <0x35>; >> phandle = <0x35>; >> }; >> >> >> But still I2C1 is not working. Is my procedure right? Am I missing >> something? >> >> >> >> >> Expecting Your fast reply. >> >> Thanks in advance for the help. >> >> >> >> Thanks & Regards, >> Sajeevan.K >> > -- 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]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/55dd2072-ce39-4b2f-99e0-25767ad1361f%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
