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/linux/Documentation/devicetree/bindings/i2c/
H A Dnvidia,tegra20-i2c.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/i2c/nvidia,tegra20-i2c.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 - Thierry Reding <thierry.reding@gmail.com>
9 - Jon Hunter <jonathanh@nvidia.com>
11 title: NVIDIA Tegra I2C controller driver
16 - description: Tegra20 has 4 generic I2C controller. This can support
17 master and slave mode of I2C communication. The i2c-tegra driver
18 only support master mode of I2C communication. Driver of I2C
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H A Di2c-pxa-pci-ce4100.txt1 CE4100 I2C
2 ----------
4 CE4100 has one PCI device which is described as the I2C-Controller. This
5 PCI device has three PCI-bars, each bar contains a complete I2C
6 controller. So we have a total of three independent I2C-Controllers
8 The driver is probed via the PCI-ID and is gathering the information of
10 Grant Likely recommended to use the ranges property to map the PCI-Bar
12 of the specific I2C controller. This were his exact words:
22 non-zero if you had 2 or more devices mapped off
30 ------------------------------------------------
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H A Dsnps,designware-i2c.yaml1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/i2c/snps,designware-i2c.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Synopsys DesignWare APB I2C Controller
10 - Mika Westerberg <mika.westerberg@linux.intel.com>
13 - $ref: /schemas/i2c/i2c-controller.yaml#
14 - if:
19 const: mscc,ocelot-i2c
28 - description: Generic Synopsys DesignWare I2C controller
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H A Dst,nomadik-i2c.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/i2c/st,nomadik-i2c.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: ST Microelectronics Nomadik I2C
9 description: The Nomadik I2C host controller began its life in the ST
11 STn8815. It was part of the prototype STn8500 which then became ST-Ericsson
15 - Linus Walleij <linusw@kernel.org>
23 - st,nomadik-i2c
24 - mobileye,eyeq5-i2c
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H A Di2c-pxa.yaml1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/i2c/i2c-pxa.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Marvell MMP I2C controller
10 - Rob Herring <robh@kernel.org>
13 - $ref: /schemas/i2c/i2c-controller.yaml#
14 - if:
17 - mrvl,i2c-polling
20 - interrupts
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H A Di2c-owl.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/i2c/i2c-owl.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Actions Semi Owl I2C Controller
10 - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
13 This I2C controller is found in the Actions Semi Owl SoCs:
17 - $ref: /schemas/i2c/i2c-controller.yaml#
22 - actions,s500-i2c # Actions Semi S500 compatible SoCs
23 - actions,s700-i2c # Actions Semi S700 compatible SoCs
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H A Di2c-rk3x.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/i2c/i2c-rk3x.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Rockchip RK3xxx I2C controller
10 This driver interfaces with the native I2C controller present in Rockchip
14 - $ref: /schemas/i2c/i2c-controller.yaml#
17 - Heiko Stuebner <heiko@sntech.de>
23 - const: rockchip,rv1108-i2c
24 - const: rockchip,rk3066-i2c
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H A Dbrcm,iproc-i2c.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/i2c/brcm,iproc-i2c.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Broadcom iProc I2C controller
10 - Rafał Miłecki <rafal@milecki.pl>
15 - brcm,iproc-i2c
16 - brcm,iproc-nic-i2c
22 clock-frequency:
27 Should contain the I2C interrupt. For certain revisions of the I2C
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H A Dingenic,i2c.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/i2c/ingenic,i2c.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Ingenic SoCs I2C controller
10 - Paul Cercueil <paul@crapouillou.net>
13 - $ref: /schemas/i2c/i2c-controller.yaml#
17 pattern: "^i2c@[0-9a-f]+$"
21 - enum:
22 - ingenic,jz4770-i2c
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H A Dhisilicon,ascend910-i2c.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/i2c/hisilicon,ascend910-i2c.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: HiSilicon common I2C controller
10 - Yicong Yang <yangyicong@hisilicon.com>
13 The HiSilicon common I2C controller can be used for many different
17 - $ref: /schemas/i2c/i2c-controller.yaml#
21 const: hisilicon,ascend910-i2c
32 clock-frequency:
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H A Dsilabs,cp2112.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/i2c/silabs,cp2112.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: CP2112 HID USB to SMBus/I2C Bridge
10 - Danny Kaehn <danny.kaehn@plexus.com>
13 The CP2112 is a USB HID device which includes an integrated I2C controller
14 and 8 GPIO pins. Its GPIO pins can each be configured as inputs, open-drain
15 outputs, or push-pull outputs.
25 interrupt-controller: true
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H A Dnvidia,tegra186-bpmp-i2c.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/i2c/nvidia,tegra186-bpmp-i2c.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: NVIDIA Tegra186 (and later) BPMP I2C controller
10 - Thierry Reding <thierry.reding@gmail.com>
11 - Jon Hunter <jonathanh@nvidia.com>
15 owns certain HW devices, such as the I2C controller for the power
16 management I2C bus. Software running on other CPUs must perform IPC to
17 the BPMP in order to execute transactions on that I2C bus. This
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H A Dsprd,sc9860-i2c.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/i2c/sprd,sc9860-i2c.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Spreadtrum SC9860 I2C controller
10 - Orson Zhai <orsonzhai@gmail.com>
11 - Baolin Wang <baolin.wang7@gmail.com>
12 - Chunyan Zhang <zhang.lyra@gmail.com>
15 - $ref: /schemas/i2c/i2c-controller.yaml#
19 const: sprd,sc9860-i2c
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H A Dbrcm,kona-i2c.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/i2c/brcm,kona-i2c.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Broadcom Kona family I2C controller
10 - Florian Fainelli <f.fainelli@gmail.com>
13 - $ref: /schemas/i2c/i2c-controller.yaml#
18 - enum:
19 - brcm,bcm11351-i2c
20 - brcm,bcm21664-i2c
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H A Dhpe,gxp-i2c.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/i2c/hpe,gxp-i2c.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: HPE GXP SoC I2C Controller
10 - Nick Hawkins <nick.hawkins@hpe.com>
13 - $ref: /schemas/i2c/i2c-controller.yaml#
17 const: hpe,gxp-i2c
25 clock-frequency:
32 between each I2C engine controller instance. It enables the I2C
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H A Dnuvoton,npcm7xx-i2c.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/i2c/nuvoton,npcm7xx-i2c.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: nuvoton NPCM7XX I2C Controller
10 I2C bus controllers of the NPCM series support both master and
11 slave mode. Each controller can switch between master and slave at run time
15 - Tali Perry <tali.perry1@gmail.com>
20 - nuvoton,npcm750-i2c
21 - nuvoton,npcm845-i2c
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/linux/Documentation/devicetree/bindings/net/
H A Dmctp-i2c-controller.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/net/mctp-i2c-controller.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: MCTP I2C transport
10 - Matt Johnston <matt@codeconstruct.com.au>
13 An mctp-i2c-controller defines a local MCTP endpoint on an I2C controller.
14 MCTP I2C is specified by DMTF DSP0237.
16 An mctp-i2c-controller must be attached to an I2C adapter which supports
17 slave functionality. I2C busses (either directly or as subordinate mux
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/linux/Documentation/i2c/
H A Dsummary.rst2 Introduction to I2C and SMBus
5 I²C (pronounce: I squared C and written I2C in the kernel documentation) is
6 a protocol developed by Philips. It is a two-wire protocol with variable
9 low bandwidth communications needs. I2C is widely used with embedded
11 and so are not advertised as being I2C but come under different names,
14 The latest official I2C specification is the `"I²C-bus specification and user
15 manual" (UM10204) <https://www.nxp.com/docs/en/user-guide/UM10204.pdf>`_
18 SMBus (System Management Bus) is based on the I2C protocol, and is mostly
19 a subset of I2C protocols and signaling. Many I2C devices will work on an
21 achieve I2C branding. Modern PC mainboards rely on SMBus. The most common
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/linux/drivers/input/touchscreen/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
20 support for the built-in touchscreen.
25 module will be called 88pm860x-ts.
33 ADS7846/TSC2046/AD7873 or ADS7843/AD7843 controller,
34 and your board-specific setup code includes that in its
51 AD7877 controller, and your board-specific initialization
60 tristate "Analog Devices AD7879-1/AD7889-1 touchscreen interface"
63 the AD7879-1/AD7889-1 controller.
71 tristate "support I2C bus connection"
72 depends on TOUCHSCREEN_AD7879 && I2C
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/linux/drivers/clk/qcom/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
23 tristate "Eliza Display Clock Controller"
33 tristate "Eliza Global Clock Controller"
38 Support for the global clock controller on Eliza devices.
40 I2C, USB, UFS, SDCC, etc.
43 tristate "Eliza TCSR Clock Controller"
48 Support for the TCSR clock controller on Eliza devices.
52 tristate "Glymur Camera Clock Controller"
57 Support for the camera clock controller on Qualcomm Technologies, Inc
63 tristate "Glymur Display Clock Controller"
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/linux/arch/arm/boot/dts/aspeed/
H A Daspeed-bmc-facebook-yosemite4.dts1 // SPDX-License-Identifier: GPL-2.0-or-later
4 /dts-v1/;
5 #include "aspeed-g6.dtsi"
6 #include <dt-bindings/gpio/aspeed-gpio.h>
7 #include <dt-bindings/leds/leds-pca955x.h>
8 #include <dt-bindings/i2c/i2c.h>
12 compatible = "facebook,yosemite4-bmc", "aspeed,ast2600";
44 stdout-path = "serial4:57600n8";
52 reserved-memory {
53 #address-cells = <1>;
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/linux/drivers/mfd/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
27 depends on I2C
31 expander, PWM and keypad controller. This includes the I2C driver and
58 tristate "Active-semi ACT8945A"
61 depends on I2C && OF
63 Support for the ACT8945A PMIC from Active-semi. This device
64 features three step-down DC/DC converters and four low-dropout
80 sun4i-gpadc-iio and the hwmon driver iio_hwmon.
83 called sun4i-gpadc.
90 depends on I2C=y
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/linux/drivers/gpu/drm/xe/
H A Dxe_i2c.c1 // SPDX-License-Identifier: GPL-2.0 OR MIT
3 * Intel Xe I2C attached Microcontroller Units (MCU)
14 #include <linux/i2c.h>
39 * DOC: Xe I2C devices
41 * Register a platform device for the I2C host controller (Synpsys DesignWare
42 * I2C) if the registers of that controller are mapped to the MMIO, and also the
43 * I2C client device for the Add-In Management Controller (the MCU) attached to
44 * the host controller.
46 * See drivers/i2c/busses/i2c-designware-* for more information on the I2C host
47 * controller.
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/linux/arch/arm64/boot/dts/exynos/
H A Dexynosautov920-pinctrl.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 * Samsung's ExynosAutov920 SoC pin-mux and pin-config device tree source
7 * Samsung's ExynosAutov920 SoC pin-mux and pin-config options are listed as
11 #include <dt-bindings/interrupt-controller/arm-gic.h>
13 #include "exynos-pinctrl.h"
16 gpa0: gpa0-gpio-bank {
17 gpio-controller;
18 #gpio-cells = <2>;
19 interrupt-controller;
20 #interrupt-cells = <2>;
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/linux/drivers/leds/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
56 See Documentation/ABI/testing/sysfs-class-led for details.
72 This option enables support for on-chip LED drivers found on Marvell
77 depends on LEDS_CLASS && I2C && OF
79 This option enables support for the AN30259A 3-channel
83 will be called leds-an30259a.
93 If you're looking for APU2/3, use the pcengines-apu2 driver.
97 module will be called leds-apu.
106 Controller.
113 depends on I2C
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