diff options
Diffstat (limited to 'Documentation/devicetree/bindings/i2c')
18 files changed, 249 insertions, 112 deletions
diff --git a/Documentation/devicetree/bindings/i2c/allwinner,sun6i-a31-p2wi.yaml b/Documentation/devicetree/bindings/i2c/allwinner,sun6i-a31-p2wi.yaml index f9d526b7da01..6097e8ac46c1 100644 --- a/Documentation/devicetree/bindings/i2c/allwinner,sun6i-a31-p2wi.yaml +++ b/Documentation/devicetree/bindings/i2c/allwinner,sun6i-a31-p2wi.yaml @@ -8,7 +8,7 @@ title: Allwinner A31 P2WI (Push/Pull 2 Wires Interface) Device Tree Bindings maintainers: - Chen-Yu Tsai <wens@csie.org> - - Maxime Ripard <maxime.ripard@bootlin.com> + - Maxime Ripard <mripard@kernel.org> allOf: - $ref: /schemas/i2c/i2c-controller.yaml# @@ -40,9 +40,7 @@ required: - clocks - resets -# FIXME: We should set it, but it would report all the generic -# properties as additional properties. -# additionalProperties: false +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/i2c/amlogic,meson6-i2c.yaml b/Documentation/devicetree/bindings/i2c/amlogic,meson6-i2c.yaml new file mode 100644 index 000000000000..49cad273c8e5 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/amlogic,meson6-i2c.yaml @@ -0,0 +1,53 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +# Copyright 2019 BayLibre, SAS +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/i2c/amlogic,meson6-i2c.yaml#" +$schema: "http://devicetree.org/meta-schemas/core.yaml#" + +title: Amlogic Meson I2C Controller + +maintainers: + - Neil Armstrong <narmstrong@baylibre.com> + - Beniamino Galvani <b.galvani@gmail.com> + +allOf: + - $ref: /schemas/i2c/i2c-controller.yaml# + +properties: + compatible: + enum: + - amlogic,meson6-i2c # Meson6, Meson8 and compatible SoCs + - amlogic,meson-gxbb-i2c # GXBB and compatible SoCs + - amlogic,meson-axg-i2c # AXG and compatible SoCs + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + minItems: 1 + +required: + - compatible + - reg + - interrupts + - clocks + +examples: + - | + i2c@c8100500 { + compatible = "amlogic,meson6-i2c"; + reg = <0xc8100500 0x20>; + interrupts = <92>; + clocks = <&clk81>; + #address-cells = <1>; + #size-cells = <0>; + + eeprom@52 { + compatible = "atmel,24c32"; + reg = <0x52>; + }; + }; diff --git a/Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.txt b/Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.txt index e9de3756752b..c9a6587fe4bb 100644 --- a/Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.txt +++ b/Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.txt @@ -1,7 +1,9 @@ Broadcom BCM2835 I2C controller Required properties: -- compatible : Should be "brcm,bcm2835-i2c". +- compatible : Should be one of: + "brcm,bcm2711-i2c" + "brcm,bcm2835-i2c" - reg: Should contain register location and length. - interrupts: Should contain interrupt. - clocks : The clock feeding the I2C controller. diff --git a/Documentation/devicetree/bindings/i2c/i2c-aspeed.txt b/Documentation/devicetree/bindings/i2c/i2c-aspeed.txt index 8fbd8633a387..b47f6ccb196a 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-aspeed.txt +++ b/Documentation/devicetree/bindings/i2c/i2c-aspeed.txt @@ -1,4 +1,4 @@ -Device tree configuration for the I2C busses on the AST24XX and AST25XX SoCs. +Device tree configuration for the I2C busses on the AST24XX, AST25XX, and AST26XX SoCs. Required Properties: - #address-cells : should be 1 @@ -6,6 +6,7 @@ Required Properties: - reg : address offset and range of bus - compatible : should be "aspeed,ast2400-i2c-bus" or "aspeed,ast2500-i2c-bus" + or "aspeed,ast2600-i2c-bus" - clocks : root clock of bus, should reference the APB clock in the second cell - resets : phandle to reset controller with the reset number in diff --git a/Documentation/devicetree/bindings/i2c/i2c-at91.txt b/Documentation/devicetree/bindings/i2c/i2c-at91.txt index b7cec17c3daf..d4bad86107b8 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-at91.txt +++ b/Documentation/devicetree/bindings/i2c/i2c-at91.txt @@ -1,9 +1,16 @@ I2C for Atmel platforms Required properties : -- compatible : Must be "atmel,at91rm9200-i2c", "atmel,at91sam9261-i2c", - "atmel,at91sam9260-i2c", "atmel,at91sam9g20-i2c", "atmel,at91sam9g10-i2c", - "atmel,at91sam9x5-i2c", "atmel,sama5d4-i2c" or "atmel,sama5d2-i2c" +- compatible : Must be one of: + "atmel,at91rm9200-i2c", + "atmel,at91sam9261-i2c", + "atmel,at91sam9260-i2c", + "atmel,at91sam9g20-i2c", + "atmel,at91sam9g10-i2c", + "atmel,at91sam9x5-i2c", + "atmel,sama5d4-i2c", + "atmel,sama5d2-i2c", + "microchip,sam9x60-i2c". - reg: physical base address of the controller and length of memory mapped region. - interrupts: interrupt number to the cpu. @@ -17,8 +24,10 @@ Optional properties: - dma-names: should contain "tx" and "rx". - atmel,fifo-size: maximum number of data the RX and TX FIFOs can store for FIFO capable I2C controllers. -- i2c-sda-hold-time-ns: TWD hold time, only available for "atmel,sama5d4-i2c" - and "atmel,sama5d2-i2c". +- i2c-sda-hold-time-ns: TWD hold time, only available for: + "atmel,sama5d4-i2c", + "atmel,sama5d2-i2c", + "microchip,sam9x60-i2c". - Child nodes conforming to i2c bus binding Examples : diff --git a/Documentation/devicetree/bindings/i2c/i2c-imx-lpi2c.txt b/Documentation/devicetree/bindings/i2c/i2c-imx-lpi2c.txt index b245363d6d60..f0c072ff9eca 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-imx-lpi2c.txt +++ b/Documentation/devicetree/bindings/i2c/i2c-imx-lpi2c.txt @@ -4,6 +4,7 @@ Required properties: - compatible : - "fsl,imx7ulp-lpi2c" for LPI2C compatible with the one integrated on i.MX7ULP soc - "fsl,imx8qxp-lpi2c" for LPI2C compatible with the one integrated on i.MX8QXP soc + - "fsl,imx8qm-lpi2c" for LPI2C compatible with the one integrated on i.MX8QM soc - reg : address and length of the lpi2c master registers - interrupts : lpi2c interrupt - clocks : lpi2c clock specifier diff --git a/Documentation/devicetree/bindings/i2c/i2c-jz4780.txt b/Documentation/devicetree/bindings/i2c/i2c-jz4780.txt index 3738cfbf863f..d229eff5ca1b 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-jz4780.txt +++ b/Documentation/devicetree/bindings/i2c/i2c-jz4780.txt @@ -1,7 +1,9 @@ * Ingenic JZ4780 I2C Bus controller Required properties: -- compatible: should be "ingenic,jz4780-i2c" +- compatible: should be one of the following: + - "ingenic,jz4780-i2c" for the JZ4780 + - "ingenic,x1000-i2c" for the X1000 - reg: Should contain the address & size of the I2C controller registers. - interrupts: Should specify the interrupt provided by parent. - clocks: Should contain a single clock specifier for the JZ4780 I2C clock. diff --git a/Documentation/devicetree/bindings/i2c/i2c-meson.txt b/Documentation/devicetree/bindings/i2c/i2c-meson.txt deleted file mode 100644 index 13d410de077c..000000000000 --- a/Documentation/devicetree/bindings/i2c/i2c-meson.txt +++ /dev/null @@ -1,30 +0,0 @@ -Amlogic Meson I2C controller - -Required properties: - - compatible: must be: - "amlogic,meson6-i2c" for Meson8 and compatible SoCs - "amlogic,meson-gxbb-i2c" for GXBB and compatible SoCs - "amlogic,meson-axg-i2c"for AXG and compatible SoCs - - - reg: physical address and length of the device registers - - interrupts: a single interrupt specifier - - clocks: clock for the device - - #address-cells: should be <1> - - #size-cells: should be <0> - -For details regarding the following core I2C bindings see also i2c.txt. - -Optional properties: -- clock-frequency: the desired I2C bus clock frequency in Hz; in - absence of this property the default value is used (100 kHz). - -Examples: - - i2c@c8100500 { - compatible = "amlogic,meson6-i2c"; - reg = <0xc8100500 0x20>; - interrupts = <0 92 1>; - clocks = <&clk81>; - #address-cells = <1>; - #size-cells = <0>; - }; diff --git a/Documentation/devicetree/bindings/i2c/i2c-mux-gpmux.txt b/Documentation/devicetree/bindings/i2c/i2c-mux-gpmux.txt index 2907dab56298..8b444b94e92f 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-mux-gpmux.txt +++ b/Documentation/devicetree/bindings/i2c/i2c-mux-gpmux.txt @@ -42,7 +42,7 @@ Optional properties: This means that no unrelated I2C transactions are allowed on the parent I2C adapter for the complete multiplexed I2C transaction. The properties of mux-locked and parent-locked multiplexers are discussed - in more detail in Documentation/i2c/i2c-topology. + in more detail in Documentation/i2c/i2c-topology.rst. For each i2c child node, an I2C child bus will be created. They will be numbered based on their order in the device tree. diff --git a/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt b/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt index 30ac6a60f041..7abda506b828 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt +++ b/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt @@ -25,6 +25,8 @@ Required Properties: Optional Properties: - reset-gpios: Reference to the GPIO connected to the reset input. + - idle-state: if present, overrides i2c-mux-idle-disconnect, + Please refer to Documentation/devicetree/bindings/mux/mux-controller.txt - i2c-mux-idle-disconnect: Boolean; if defined, forces mux to disconnect all children in idle state. This is necessary for example, if there are several multiplexers on the bus and the devices behind them use same I2C addresses. diff --git a/Documentation/devicetree/bindings/i2c/i2c-stm32.txt b/Documentation/devicetree/bindings/i2c/i2c-stm32.txt deleted file mode 100644 index ce3df2fff6c8..000000000000 --- a/Documentation/devicetree/bindings/i2c/i2c-stm32.txt +++ /dev/null @@ -1,65 +0,0 @@ -* I2C controller embedded in STMicroelectronics STM32 I2C platform - -Required properties: -- compatible: Must be one of the following - - "st,stm32f4-i2c" - - "st,stm32f7-i2c" -- reg: Offset and length of the register set for the device -- interrupts: Must contain the interrupt id for I2C event and then the - interrupt id for I2C error. -- resets: Must contain the phandle to the reset controller. -- clocks: Must contain the input clock of the I2C instance. -- A pinctrl state named "default" must be defined to set pins in mode of - operation for I2C transfer -- #address-cells = <1>; -- #size-cells = <0>; - -Optional properties: -- clock-frequency: Desired I2C bus clock frequency in Hz. If not specified, - the default 100 kHz frequency will be used. - For STM32F4 SoC Standard-mode and Fast-mode are supported, possible values are - 100000 and 400000. - For STM32F7, STM32H7 and STM32MP1 SoCs, Standard-mode, Fast-mode and Fast-mode - Plus are supported, possible values are 100000, 400000 and 1000000. -- dmas: List of phandles to rx and tx DMA channels. Refer to stm32-dma.txt. -- dma-names: List of dma names. Valid names are: "rx" and "tx". -- i2c-scl-rising-time-ns: I2C SCL Rising time for the board (default: 25) - For STM32F7, STM32H7 and STM32MP1 only. -- i2c-scl-falling-time-ns: I2C SCL Falling time for the board (default: 10) - For STM32F7, STM32H7 and STM32MP1 only. - I2C Timings are derived from these 2 values -- st,syscfg-fmp: Use to set Fast Mode Plus bit within SYSCFG when Fast Mode - Plus speed is selected by slave. - 1st cell: phandle to syscfg - 2nd cell: register offset within SYSCFG - 3rd cell: register bitmask for FMP bit - For STM32F7, STM32H7 and STM32MP1 only. - -Example: - - i2c@40005400 { - compatible = "st,stm32f4-i2c"; - #address-cells = <1>; - #size-cells = <0>; - reg = <0x40005400 0x400>; - interrupts = <31>, - <32>; - resets = <&rcc 277>; - clocks = <&rcc 0 149>; - pinctrl-0 = <&i2c1_sda_pin>, <&i2c1_scl_pin>; - pinctrl-names = "default"; - }; - - i2c@40005400 { - compatible = "st,stm32f7-i2c"; - #address-cells = <1>; - #size-cells = <0>; - reg = <0x40005400 0x400>; - interrupts = <31>, - <32>; - resets = <&rcc STM32F7_APB1_RESET(I2C1)>; - clocks = <&rcc 1 CLK_I2C1>; - pinctrl-0 = <&i2c1_sda_pin>, <&i2c1_scl_pin>; - pinctrl-names = "default"; - st,syscfg-fmp = <&syscfg 0x4 0x1>; - }; diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt b/Documentation/devicetree/bindings/i2c/i2c.txt index 44efafdfd7f5..9a53df4243c6 100644 --- a/Documentation/devicetree/bindings/i2c/i2c.txt +++ b/Documentation/devicetree/bindings/i2c/i2c.txt @@ -55,6 +55,24 @@ wants to support one of the below features, it should adapt the bindings below. Number of nanoseconds the SDA signal takes to fall; t(f) in the I2C specification. +- i2c-analog-filter + Enable analog filter for i2c lines. + +- i2c-digital-filter + Enable digital filter for i2c lines. + +- i2c-digital-filter-width-ns + Width of spikes which can be filtered by digital filter + (i2c-digital-filter). This width is specified in nanoseconds. + +- i2c-analog-filter-cutoff-frequency + Frequency that the analog filter (i2c-analog-filter) uses to distinguish + which signal to filter. Signal with higher frequency than specified will + be filtered out. Only lower frequency will pass (this is applicable to + a low-pass analog filter). Typical value should be above the normal + i2c bus clock frequency (clock-frequency). + Specified in Hz. + - interrupts interrupts used by the device. diff --git a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml index 001f2b7abad0..2ceb05ba2df5 100644 --- a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml +++ b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml @@ -26,6 +26,9 @@ properties: - items: - const: allwinner,sun50i-a64-i2c - const: allwinner,sun6i-a31-i2c + - items: + - const: allwinner,sun50i-h6-i2c + - const: allwinner,sun6i-a31-i2c - const: marvell,mv64xxx-i2c - const: marvell,mv78230-i2c @@ -90,9 +93,7 @@ allOf: required: - resets -# FIXME: We should set it, but it would report all the generic -# properties as additional properties. -# additionalProperties: false +unevaluatedProperties: false examples: - | diff --git a/Documentation/devicetree/bindings/i2c/i2c-rcar.txt b/Documentation/devicetree/bindings/i2c/renesas,i2c.txt index 3ee5e8f6ee01..c359965d0724 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-rcar.txt +++ b/Documentation/devicetree/bindings/i2c/renesas,i2c.txt @@ -7,6 +7,7 @@ Required properties: "renesas,i2c-r8a7745" if the device is a part of a R8A7745 SoC. "renesas,i2c-r8a77470" if the device is a part of a R8A77470 SoC. "renesas,i2c-r8a774a1" if the device is a part of a R8A774A1 SoC. + "renesas,i2c-r8a774b1" if the device is a part of a R8A774B1 SoC. "renesas,i2c-r8a774c0" if the device is a part of a R8A774C0 SoC. "renesas,i2c-r8a7778" if the device is a part of a R8A7778 SoC. "renesas,i2c-r8a7779" if the device is a part of a R8A7779 SoC. @@ -16,7 +17,8 @@ Required properties: "renesas,i2c-r8a7793" if the device is a part of a R8A7793 SoC. "renesas,i2c-r8a7794" if the device is a part of a R8A7794 SoC. "renesas,i2c-r8a7795" if the device is a part of a R8A7795 SoC. - "renesas,i2c-r8a7796" if the device is a part of a R8A7796 SoC. + "renesas,i2c-r8a7796" if the device is a part of a R8A77960 SoC. + "renesas,i2c-r8a77961" if the device is a part of a R8A77961 SoC. "renesas,i2c-r8a77965" if the device is a part of a R8A77965 SoC. "renesas,i2c-r8a77970" if the device is a part of a R8A77970 SoC. "renesas,i2c-r8a77980" if the device is a part of a R8A77980 SoC. diff --git a/Documentation/devicetree/bindings/i2c/i2c-emev2.txt b/Documentation/devicetree/bindings/i2c/renesas,iic-emev2.txt index 5ed1ea1c7e14..5ed1ea1c7e14 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-emev2.txt +++ b/Documentation/devicetree/bindings/i2c/renesas,iic-emev2.txt diff --git a/Documentation/devicetree/bindings/i2c/i2c-sh_mobile.txt b/Documentation/devicetree/bindings/i2c/renesas,iic.txt index 202602e6e837..ffe085c9947e 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-sh_mobile.txt +++ b/Documentation/devicetree/bindings/i2c/renesas,iic.txt @@ -8,6 +8,7 @@ Required properties: - "renesas,iic-r8a7744" (RZ/G1N) - "renesas,iic-r8a7745" (RZ/G1E) - "renesas,iic-r8a774a1" (RZ/G2M) + - "renesas,iic-r8a774b1" (RZ/G2N) - "renesas,iic-r8a774c0" (RZ/G2E) - "renesas,iic-r8a7790" (R-Car H2) - "renesas,iic-r8a7791" (R-Car M2-W) @@ -16,6 +17,7 @@ Required properties: - "renesas,iic-r8a7794" (R-Car E2) - "renesas,iic-r8a7795" (R-Car H3) - "renesas,iic-r8a7796" (R-Car M3-W) + - "renesas,iic-r8a77961" (R-Car M3-W+) - "renesas,iic-r8a77965" (R-Car M3-N) - "renesas,iic-r8a77990" (R-Car E3) - "renesas,iic-sh73a0" (SH-Mobile AG5) diff --git a/Documentation/devicetree/bindings/i2c/i2c-riic.txt b/Documentation/devicetree/bindings/i2c/renesas,riic.txt index e26fe3ad86a9..e26fe3ad86a9 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-riic.txt +++ b/Documentation/devicetree/bindings/i2c/renesas,riic.txt diff --git a/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml b/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml new file mode 100644 index 000000000000..900ec1ab6a47 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml @@ -0,0 +1,141 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/st,stm32-i2c.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: I2C controller embedded in STMicroelectronics STM32 I2C platform + +maintainers: + - Pierre-Yves MORDRET <pierre-yves.mordret@st.com> + +allOf: + - $ref: /schemas/i2c/i2c-controller.yaml# + - if: + properties: + compatible: + contains: + enum: + - st,stm32f7-i2c + then: + properties: + i2c-scl-rising-time-ns: + default: 25 + + i2c-scl-falling-time-ns: + default: 10 + + st,syscfg-fmp: + description: Use to set Fast Mode Plus bit within SYSCFG when + Fast Mode Plus speed is selected by slave. + Format is phandle to syscfg / register offset within + syscfg / register bitmask for FMP bit. + allOf: + - $ref: "/schemas/types.yaml#/definitions/phandle-array" + - items: + minItems: 3 + maxItems: 3 + + - if: + properties: + compatible: + contains: + enum: + - st,stm32f4-i2c + then: + properties: + clock-frequency: + enum: [100000, 400000] + +properties: + compatible: + enum: + - st,stm32f4-i2c + - st,stm32f7-i2c + + reg: + maxItems: 1 + + interrupts: + items: + - description: interrupt ID for I2C event + - description: interrupt ID for I2C error + + resets: + maxItems: 1 + + clocks: + maxItems: 1 + + dmas: + items: + - description: RX DMA Channel phandle + - description: TX DMA Channel phandle + + dma-names: + items: + - const: rx + - const: tx + + clock-frequency: + description: Desired I2C bus clock frequency in Hz. If not specified, + the default 100 kHz frequency will be used. + For STM32F7, STM32H7 and STM32MP1 SoCs, Standard-mode, + Fast-mode and Fast-mode Plus are supported, possible + values are 100000, 400000 and 1000000. + default: 100000 + enum: [100000, 400000, 1000000] + +required: + - compatible + - reg + - interrupts + - resets + - clocks + +examples: + - | + #include <dt-bindings/mfd/stm32f7-rcc.h> + #include <dt-bindings/clock/stm32fx-clock.h> + //Example 1 (with st,stm32f4-i2c compatible) + i2c@40005400 { + compatible = "st,stm32f4-i2c"; + #address-cells = <1>; + #size-cells = <0>; + reg = <0x40005400 0x400>; + interrupts = <31>, + <32>; + resets = <&rcc 277>; + clocks = <&rcc 0 149>; + }; + + //Example 2 (with st,stm32f7-i2c compatible) + i2c@40005800 { + compatible = "st,stm32f7-i2c"; + #address-cells = <1>; + #size-cells = <0>; + reg = <0x40005800 0x400>; + interrupts = <31>, + <32>; + resets = <&rcc STM32F7_APB1_RESET(I2C1)>; + clocks = <&rcc 1 CLK_I2C1>; + }; + + //Example 3 (with st,stm32f7-i2c compatible on stm32mp) + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/clock/stm32mp1-clks.h> + #include <dt-bindings/reset/stm32mp1-resets.h> + i2c@40013000 { + compatible = "st,stm32f7-i2c"; + #address-cells = <1>; + #size-cells = <0>; + reg = <0x40013000 0x400>; + interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&rcc I2C2_K>; + resets = <&rcc I2C2_R>; + i2c-scl-rising-time-ns = <185>; + i2c-scl-falling-time-ns = <20>; + st,syscfg-fmp = <&syscfg 0x4 0x2>; + }; +... |
