On Mon, Oct 30, 2017 at 4:37 PM, Tracy Smith <tlsmith3...@gmail.com> wrote:
> ok that works I'll use the dtb-rebuilder. > > I'm comparing against the BBB schematic for the pin numbers and need to > understand how they are mapping to the pinmux pins in > src/arm/am335x-bone-common.dtsi. > > For example, which BBB schematic pins are P9.19 and P2.20 on the BBB > schematic since I need to check for any conflicts on our board for > pinmuxing. I don't see a gpio9-19 or a gpio9-20 on the BBB rev-c schematic. > I'm looking at document 450-5500-001 Rev C March 21, 2014. > P9.19/P9.20 is an i2c bus by default, so you'll have to carve it out like: https://github.com/RobertCNelson/linux-dev/blob/master/patches/soc/ti/uboot/0002-am335x-bone-common-config-pin-carve-out-P9.19-P9.20.patch - i2c2_pins: pinmux_i2c2_pins { - pinctrl-single,pins = < - AM33XX_IOPAD(0x978, PIN_INPUT_PULLUP | MUX_MODE3) /* uart1_ctsn.i2c2_sda */ - AM33XX_IOPAD(0x97c, PIN_INPUT_PULLUP | MUX_MODE3) /* uart1_rtsn.i2c2_scl */ - >; - }; +// i2c2_pins: pinmux_i2c2_pins { +// pinctrl-single,pins = < +// AM33XX_IOPAD(0x978, PIN_INPUT_PULLUP | MUX_MODE3) /* uart1_ctsn.i2c2_sda */ +// AM33XX_IOPAD(0x97c, PIN_INPUT_PULLUP | MUX_MODE3) /* uart1_rtsn.i2c2_scl */ +// >; +// }; &i2c2 { pinctrl-names = "default"; - pinctrl-0 = <&i2c2_pins>; + //pinctrl-0 = <&i2c2_pins>; + pinctrl-0 = <>; Otherwise the can0/1 is just: &am33xx_pinmux { dcan0_pins: pinmux_dcan0_pins { pinctrl-single,pins = < AM33XX_IOPAD(0x0978, PIN_INPUT_PULLUP | MUX_MODE2) /* P9_20: uart1_ctsn.d_can0_tx */ AM33XX_IOPAD(0x097c, PIN_INPUT_PULLUP | MUX_MODE2) /* P9_19: uart1_rtsn.d_can0_rx */ >; }; dcan1_pins: pinmux_dcan1_pins { pinctrl-single,pins = < AM33XX_IOPAD(0x0980, PIN_INPUT_PULLUP | MUX_MODE2) /* P9_26: uart1_rxd.dcan1_tx */ AM33XX_IOPAD(0x0984, PIN_INPUT_PULLUP | MUX_MODE2) /* P9_24: uart1_txd.dcan1_rx */ >; }; }; &dcan0 { pinctrl-names = "default"; pinctrl-0 = <&dcan0_pins>; status = "okay"; }; &dcan1 { pinctrl-names = "default"; pinctrl-0 = <&dcan1_pins>; status = "okay"; }; Regards, -- Robert Nelson https://rcn-ee.com/ -- 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/CAOCHtYjaE4qqzVs6%3DP2JQ%2B9UzVQ20j0AgM6V38HYb-hNP54aDA%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
