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/linux/drivers/i2c/busses/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
6 menu "I2C Hardware Bus support"
9 comment "PC SMBus host controller drivers"
16 for Cypress CCGx Type-C controller. Individual bus drivers
24 Host controller on Acer Labs Inc. (ALI) M1535 South Bridges. The SMB
25 controller is part of the 7101 device, which is an ACPI-compliant
29 will be called i2c-ali1535.
36 Host controller on Acer Labs Inc. (ALI) M1563 South Bridges. The SMB
37 controller is part of the 7101 device, which is an ACPI-compliant
41 will be called i2c-ali1563.
[all …]
H A Di2c-octeon-core.h1 /* SPDX-License-Identifier: GPL-2.0 */
7 #include <linux/i2c.h>
8 #include <linux/i2c-smbus.h>
13 /* Controller command patterns */
22 /* Controller opcode word (bits 60:57) */
31 /* Controller extended opcode word (bits 34:32) */
39 /* Controller command and status bits */
40 #define TWSI_CTL_CE 0x80 /* High level controller enable */
42 #define TWSI_CTL_STA 0x20 /* Controller-mode start, HW clears when done */
43 #define TWSI_CTL_STP 0x10 /* Controller-mode stop, HW clears when done */
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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
[all …]
H A Dopencores,i2c-ocores.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/i2c/opencores,i2c-ocores.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: OpenCores I2C controller
10 - Peter Korsgaard <peter@korsgaard.com>
11 - Andrew Lunn <andrew@lunn.ch>
14 - $ref: /schemas/i2c/i2c-controller.yaml#
19 - items:
20 - enum:
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H A Di2c-demux-pinctrl.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/i2c/i2c-demux-pinctrl.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Pinctrl-based I2C Bus Demultiplexer
10 - Wolfram Sang <wsa+renesas@sang-engineering.com>
13 This binding describes an I2C bus demultiplexer that uses pin multiplexing to
14 route the I2C signals, and represents the pin multiplexing configuration
15 using the pinctrl device tree bindings. This may be used to select one I2C
17 another I2C IP core on the SoC. The most simple example is to fall back to
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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
[all …]
H A Dcdns,i2c-r1p10.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/i2c/cdns,i2c-r1p10.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Cadence I2C controller
10 - Michal Simek <michal.simek@amd.com>
13 - $ref: /schemas/i2c/i2c-controller.yaml#
18 - cdns,i2c-r1p10 # cadence i2c controller version 1.0
19 - cdns,i2c-r1p14 # cadence i2c controller version 1.4
33 clock-frequency:
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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
[all …]
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
[all …]
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
[all …]
/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
[all …]
/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/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/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>;
[all …]
/linux/drivers/hwmon/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
20 sensors-detect script from the lm_sensors package. Read
21 <file:Documentation/hwmon/userspace-tools.rst> for details.
34 Say Y here if you want the I2C chip drivers to produce a bunch of
36 a problem with I2C support and want to see more of what is going
76 with SMpro co-processor.
90 depends on I2C
100 depends on I2C
110 depends on I2C
121 depends on I2C
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