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/linux/Documentation/devicetree/bindings/i2c/
H A Di2c-arb-gpio-challenge.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/i2c/i2c-arb-gpio-challenge.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: GPIO-based I2C Arbitration Using a Challenge & Response Mechanism
10 - Doug Anderson <dianders@chromium.org>
11 - Peter Rosin <peda@axentia.se>
17 In many cases using GPIOs to arbitrate is not needed and a design can use the
18 standard I2C multi-master rules. Using GPIOs is generally useful in the case
29 All masters on the bus have a 'bus claim' line which is an output that the
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/linux/arch/arm/boot/dts/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-i2s.h>
30 stdout-path = "serial3:115200n8";
33 gpio-keys {
34 compatible = "gpio-keys";
35 pinctrl-names = "default";
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/linux/arch/arm/boot/dts/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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/linux/drivers/pinctrl/qcom/
H A Dpinctrl-msm.c1 // SPDX-License-Identifier: GPL-2.0-only
24 #include <linux/pinctrl/pinconf-generic.h>
32 #include "../pinctrl-utils.h"
34 #include "pinctrl-msm.h"
41 * struct msm_pinctrl - state for a pinctrl-msm device
89 return readl(pctrl->regs[g->tile] + g->name##_reg); \
94 writel(val, pctrl->regs[g->tile] + g->name##_reg); \
106 u32 val = g->intr_ack_high ? BIT(g->intr_status_bit) : 0; in MSM_ACCESSOR()
115 return pctrl->soc->ngroups; in msm_get_groups_count()
123 return pctrl->soc->groups[group].grp.name; in msm_get_group_name()
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/linux/drivers/i2c/busses/
H A Di2c-s3c2410.c1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* linux/drivers/i2c/busses/i2c-s3c2410.c
34 #include <linux/platform_data/i2c-s3c2410.h>
117 struct gpio_desc *gpios[2]; member
125 .name = "s3c2410-i2c",
128 .name = "s3c2440-i2c",
131 .name = "s3c2440-hdmiphy-i2c",
141 { .compatible = "samsung,s3c2410-i2c", .data = (void *)0 },
142 { .compatible = "samsung,s3c2440-i2c", .data = (void *)QUIRK_S3C2440 },
143 { .compatible = "samsung,s3c2440-hdmiphy-i2c",
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