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/freebsd/sys/contrib/device-tree/Bindings/i2c/
H A Di2c-arb-gpio-challenge.txt1 GPIO-based I2C Arbitration Using a Challenge & Response Mechanism
6 In many cases using GPIOs to arbitrate is not needed and a design can use
7 the standard I2C multi-master rules. Using GPIOs is generally useful in
20 All masters on the bus have a 'bus claim' line which is an output that the
21 others can see. These are all active low with pull-ups enabled. We'll
24 - OUR_CLAIM: output from us signaling to other hosts that we want the bus
25 - THEIR_CLAIMS: output from others signaling that they want the bus
31 Let's say we want to claim the bus. We:
38 5. If not, back off, release the claim and wait for a few more milliseconds.
43 - compatible: i2c-arb-gpio-challenge
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/freebsd/sys/contrib/device-tree/src/arm/samsung/
H A Dexynos5250-snow-common.dtsi1 // SPDX-License-Identifier: GPL-2.0
8 #include <dt-bindings/gpio/gpio.h>
9 #include <dt-bindings/clock/maxim,max77686.h>
10 #include <dt-bindings/interrupt-controller/irq.h>
11 #include <dt-bindings/input/input.h>
12 #include <dt-bindings/sound/samsung-i2
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/freebsd/sys/contrib/device-tree/src/arm/allwinner/
H A Dsun8i-r16-bananapi-m2m.dts2 * Copyright (c) 2017 Free Electrons <maxime.ripard@free-electrons.com>
4 * This file is dual-licensed: you can use it either under the terms
37 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
43 /dts-v1/;
44 #include "sun8i-a33.dtsi"
46 #include <dt-bindings/gpio/gpio.h>
50 compatible = "sinovoip,bananapi-m2m", "allwinner,sun8i-a33";
61 stdout-path = "serial0:115200n8";
65 compatible = "gpio-leds";
67 led-0 {
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H A Dsun8i-v40-bananapi-m2-berry.dts4 * This file is dual-licensed: you can use it either under the terms
37 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
43 /dts-v1/;
44 #include "sun8i-r40.dtsi"
45 #include "sun8i-r40-cpu-opp.dtsi"
47 #include <dt-bindings/gpio/gpio.h>
51 compatible = "sinovoip,bpi-m2-berry", "allwinner,sun8i-r40";
59 stdout-path = "serial0:115200n8";
63 compatible = "hdmi-connector";
68 remote-endpoint = <&hdmi_out_con>;
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H A Dsun8i-r40-bananapi-m2-ultra.dts2 * Copyright (C) 2017 Chen-Yu Tsai <wens@csie.org>
5 * This file is dual-licensed: you can use it either under the terms
38 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
44 /dts-v1/;
45 #include "sun8i-r40.dtsi"
46 #include "sun8i-r40-cpu-opp.dtsi"
48 #include <dt-bindings/gpio/gpio.h>
51 model = "Banana Pi BPI-M2-Ultra";
52 compatible = "sinovoip,bpi-m2-ultra", "allwinner,sun8i-r40";
60 stdout-path = "serial0:115200n8";
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