On Tue, Sep 17, 2019 at 12:55 PM Bryan Ritchie <[email protected]> wrote: > > Robert, > > This caused my spidev1.0 and spidev1.1 to disappear.
Yes, that's good.. you can use the gpiolib/etc instead of hacking thru spidev.. > > Here's what I compiled: > /* > * Copyright (C) 2015 Robert Nelson <[email protected]> > * > * This program is free software; you can redistribute it and/or modify > * it under the terms of the GNU General Public License version 2 as > * published by the Free Software Foundation. > */ > > /dts-v1/; > /plugin/; > > #include <dt-bindings/board/am335x-bbw-bbb-base.h> > #include <dt-bindings/pinctrl/am33xx.h> > > / { > compatible = "ti,beaglebone", "ti,beaglebone-black", > "ti,beaglebone-green"; > > /* identification */ > part-number = "BB-SPI1-MCP23S17"; > version = "00A0"; > > /* state the resources this cape uses */ > exclusive-use = > /* the pin header uses */ > "P9.31", /* spi1_sclk, SPI1_SCLK */ > "P9.29", /* spi1_d0, SPI1_MISO */ > "P9.30", /* spi1_d1, SPI1_MOSI */ > "P9.28", /* spi1_cs0, CS0 */ > "P9.42", /* spi1_cs1, CS1 */ > /* the hardware ip uses */ > "spi1"; > > /* > * Helper to show loaded overlays under: > /proc/device-tree/chosen/overlays/ > */ > fragment@0 { > target-path="/"; > __overlay__ { > > chosen { > overlays { > BB-SPI1-MCP23S17-00A0 = __TIMESTAMP__; > }; > }; > }; > }; > > /* > * Free up the pins used by the cape from the pinmux helpers. > */ > fragment@1 { > target = <&ocp>; > __overlay__ { > P9_28_pinmux { status = "disabled"; }; /* spi1_cs0 */ > P9_30_pinmux { status = "disabled"; }; /* spi1_d1 */ > P9_29_pinmux { status = "disabled"; }; /* spi1_d0 */ > P9_31_pinmux { status = "disabled"; }; /* spi1_sclk > */ > P9_42_pinmux { status = "disabled"; }; /* spi1_cs1 */ > }; > }; > > fragment@2 { > target = <&am33xx_pinmux>; > __overlay__ { > bb_spi0_pins: pinmux_bb_spi0_pins { This label name doesn't match below... (aka: bb_spi1) replace ^ spi0 with spi1... > pinctrl-single,pins = < > BONE_P9_31 (PIN_INPUT_PULLUP | > MUX_MODE3) /* spi1_sclk.spi1_sclk */ > BONE_P9_29 (PIN_INPUT_PULLUP | > MUX_MODE3) /* spi1_d0.spi1_d0 */ > BONE_P9_30 (PIN_OUTPUT_PULLUP | > MUX_MODE3) /* spi1_d1.spi1_d1 */ > BONE_P9_28 (PIN_OUTPUT_PULLUP | > MUX_MODE3) /* spi1_cs0.spi1_cs0 */ > BONE_P9_42 (PIN_OUTPUT_PULLUP | > MUX_MODE2) /* spi1_cs1.spi1_cs1 */ > >; > }; > }; > }; > > fragment@3 { > target = <&spi1>; > __overlay__ { > #address-cells = <1>; > #size-cells = <0>; > > status = "okay"; > pinctrl-names = "default"; > pinctrl-0 = <&bb_spi1_pins>; > > gpiom1: gpio@0 { > compatible = "microchip,mcp23s17"; > gpio-controller; > #gpio-cells = <2>; > microchip,spi-present-mask = <0x01>; > mcp,spi-present-mask = <0x01>; > spi-present-mask = <0x01>; > reg = <0>; > spi-max-frequency = <1000000>; > }; > > gpiom2: gpio@1 { > compatible = "microchip,mcp23s17"; > gpio-conroller; spelling: gpio-controller > #gpio-cells = <2>; > microchip,spi-present-mask = <0x01>; > mcp,spi-present-mask = <0x01>; > spi-present-mask = <0x01>; > reg = <1>; > spi-max-frequency = <1000000>; > }; > }; > }; > }; 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CAOCHtYj5SmqFXtVCH4Ny_ODYHYg%2B52y40Cw6Ve0%2BOBA%2B3J%3DS6g%40mail.gmail.com.
