Hi, Did you got this working ? If so please can you post the solution.
On Wednesday, 20 July 2016 18:43:34 UTC+5:30, Laurits Telle Riple wrote: > > I am trying to get MAX14830 > <https://www.maximintegrated.com/en/products/interface/controllers-expanders/MAX14830.html> > > to work with beaglebone black using max310x > <https://github.com/torvalds/linux/blob/master/Documentation/devicetree/bindings/serial/maxim%2Cmax310x.txt>driver > > over spi. With my dts, the overlay gets loaded, but i dont get any new > devices in /dev. With my oscilloscope i can see that nothing happens and > that CS is low (Active low, so something is wrong). I dont understand what > I am doing wrong. I have the chip connected to a 4Mhz external crystal. > > Output from dmesg after loading manually: > > [ 212.403551] bone_capemgr bone_capemgr: part_number 'BB-MAX14830-01', > version 'N/A' > [ 212.411232] bone_capemgr bone_capemgr: slot #6: override > [ 212.416720] bone_capemgr bone_capemgr: Using override eeprom data at > slot 6 > [ 212.423786] bone_capemgr bone_capemgr: slot #6: 'Override Board > Name,00A0,Override Manuf,BB-MAX14830-01' > [ 212.461917] bone_capemgr bone_capemgr: slot #6: dtbo > 'BB-MAX14830-01-00A0.dtbo' loaded; overlay id #0 > > modalias: > > debian@arm:~$ cat /sys/bus/spi/devices/*/modalias > spi:max14830 > > > DTS: > > /dts-v1/; > /plugin/; > > > / { > compatible = "ti,beaglebone", "ti,beaglebone-black"; > part-number = "BB-MAX14830-01"; > > /* state the resources this cape uses */ > exclusive-use = > /* the pin header uses */ > "P9.25", /* spi irq: gpio3_21 */ > "P9.31", /* spi: spi1_sclk */ > "P9.29", /* spi: spi1_d0 */ > "P9.30", /* spi: spi1_d1 */ > "P9.28", /* spi: spi1_cs0 */ > /* the hardware IP uses */ > "gpio3_21", > "spi1"; > > fragment@0 { > target = <&am33xx_pinmux>; > __overlay__ { > bone_14830_spi1_pins: pinmux_bone_14830_spi1_pins { > pinctrl-single,pins = < > 0x190 0x33 /* > mcasp0_aclkx.spi1_sclk, RX_ENABLED | PULLUP | MODE3 */ > 0x194 0x33 /* > mcasp0_fsx.spi1_d0, RX_ENABLED | PULLUP | MODE3 */ > 0x198 0x13 /* > mcasp0_axr0.spi1_d1, OUTPUT_PULLUP | MODE3 */ > 0x19c 0x13 /* > mcasp0_ahclkr.spi1_cs0, OUTPUT_PULLUP | MODE3 */ > >; > }; > > bone_14830_pins: pinmux_bone_14830_pins { > pinctrl-single,pins = < > 0x1ac 0x37 /* > mcasp0_ahclkx.gpio3_21, RX_ENABLED | PULLUP | MODE7 */ > >; > }; > }; > }; > > fragment@1 { > target = <&spi1>; > __overlay__ { > #address-cells = <1>; > #size-cells = <0>; > status = "okay"; > pinctrl-names = "default"; > pinctrl-0 = <&bone_14830_spi1_pins>; > max14830@0 { > compatible = "maxim,max14830"; > reg = <0>; /* cs0 */ > mode=<0>; > spi-max-frequency=<1000000>; > > pinctrl-names="default"; > pinctrl-0 = <&bone_14830_pins>; > clocks=<&clk4m>; > clock-names="xtal"; > interrupt-parent = <&gpio3>; > interrupts = <21 2>; // Edge Falling > > clk4m: clk4m@10 { > compatible = "fixed-clock"; > #clock-cells = <0>; > clock-frequency = <4000000>; > }; > }; > }; > }; > }; > > > > > > > > -- 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 beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/0932465a-1471-4a52-8b48-93d013b918b5%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
