diff options
Diffstat (limited to 'Documentation/devicetree/bindings/i2c')
12 files changed, 85 insertions, 164 deletions
diff --git a/Documentation/devicetree/bindings/i2c/atmel,at91sam-i2c.yaml b/Documentation/devicetree/bindings/i2c/atmel,at91sam-i2c.yaml index 6adedd3ec..b1c13bab2 100644 --- a/Documentation/devicetree/bindings/i2c/atmel,at91sam-i2c.yaml +++ b/Documentation/devicetree/bindings/i2c/atmel,at91sam-i2c.yaml @@ -25,7 +25,9 @@ properties: - atmel,sama5d2-i2c - microchip,sam9x60-i2c - items: - - const: microchip,sama7g5-i2c + - enum: + - microchip,sama7g5-i2c + - microchip,sam9x7-i2c - const: microchip,sam9x60-i2c reg: diff --git a/Documentation/devicetree/bindings/i2c/i2c-demux-pinctrl.yaml b/Documentation/devicetree/bindings/i2c/i2c-demux-pinctrl.yaml index 2c08f2a7c..b813f6d48 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-demux-pinctrl.yaml +++ b/Documentation/devicetree/bindings/i2c/i2c-demux-pinctrl.yaml @@ -32,7 +32,6 @@ description: | +-------------------------------+ allOf: - - $ref: i2c-mux.yaml - $ref: /schemas/i2c/i2c-controller.yaml# properties: @@ -41,6 +40,8 @@ properties: i2c-parent: $ref: /schemas/types.yaml#/definitions/phandle-array + items: + maxItems: 1 description: List of phandles of I2C masters available for selection. The first one will be used as default. diff --git a/Documentation/devicetree/bindings/i2c/i2c-exynos5.yaml b/Documentation/devicetree/bindings/i2c/i2c-exynos5.yaml index df9c57bca..cc8bba553 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-exynos5.yaml +++ b/Documentation/devicetree/bindings/i2c/i2c-exynos5.yaml @@ -33,6 +33,7 @@ properties: - const: samsung,exynos7-hsi2c - items: - enum: + - google,gs101-hsi2c - samsung,exynos850-hsi2c - const: samsung,exynosautov9-hsi2c - const: samsung,exynos5-hsi2c # Exynos5250 and Exynos5420 diff --git a/Documentation/devicetree/bindings/i2c/i2c-imx-lpi2c.yaml b/Documentation/devicetree/bindings/i2c/i2c-imx-lpi2c.yaml index 4656f5112..54d500be6 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-imx-lpi2c.yaml +++ b/Documentation/devicetree/bindings/i2c/i2c-imx-lpi2c.yaml @@ -24,6 +24,7 @@ properties: - fsl,imx8qm-lpi2c - fsl,imx8ulp-lpi2c - fsl,imx93-lpi2c + - fsl,imx95-lpi2c - const: fsl,imx7ulp-lpi2c reg: diff --git a/Documentation/devicetree/bindings/i2c/i2c-mpc.yaml b/Documentation/devicetree/bindings/i2c/i2c-mpc.yaml index 70fb69b92..b1d7d14c0 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-mpc.yaml +++ b/Documentation/devicetree/bindings/i2c/i2c-mpc.yaml @@ -96,6 +96,6 @@ examples: interrupts = <43 2>; interrupt-parent = <&mpic>; clock-frequency = <400000>; - i2c-scl-clk-low-timeout-us = <10000>; + i2c-transfer-timeout-us = <10000>; }; ... diff --git a/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml b/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml index 2d7bb998b..9aa058520 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml +++ b/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml @@ -71,6 +71,23 @@ properties: description: A voltage regulator supplying power to the chip. On PCA9846 the regulator supplies power to VDD2 (core logic) and optionally to VDD1. + maxim,isolate-stuck-channel: + type: boolean + description: Allows to use non faulty channels while a stuck channel is + isolated from the upstream bus. If not set all channels are isolated from + the upstream bus until the fault is cleared. + + maxim,send-flush-out-sequence: + type: boolean + description: Send a flush-out sequence to stuck auxiliary buses + automatically after a stuck channel is being detected. + + maxim,preconnection-wiggle-test-enable: + type: boolean + description: Send a STOP condition to the auxiliary buses when the switch + register activates a channel to detect a stuck high fault. On fault the + channel is isolated from the upstream bus. + required: - compatible - reg @@ -95,6 +112,19 @@ allOf: "#interrupt-cells": false interrupt-controller: false + - if: + not: + properties: + compatible: + contains: + enum: + - maxim,max7357 + then: + properties: + maxim,isolate-stuck-channel: false + maxim,send-flush-out-sequence: false + maxim,preconnection-wiggle-test-enable: false + unevaluatedProperties: false examples: diff --git a/Documentation/devicetree/bindings/i2c/i2c-pxa.yaml b/Documentation/devicetree/bindings/i2c/i2c-pxa.yaml index 31386a8d7..e89ee3617 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-pxa.yaml +++ b/Documentation/devicetree/bindings/i2c/i2c-pxa.yaml @@ -7,7 +7,7 @@ $schema: http://devicetree.org/meta-schemas/core.yaml# title: Marvell MMP I2C controller maintainers: - - Rob Herring <robh+dt@kernel.org> + - Rob Herring <robh@kernel.org> allOf: - $ref: /schemas/i2c/i2c-controller.yaml# diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt b/Documentation/devicetree/bindings/i2c/i2c.txt deleted file mode 100644 index fc3dd7ec0..000000000 --- a/Documentation/devicetree/bindings/i2c/i2c.txt +++ /dev/null @@ -1,151 +0,0 @@ -Generic device tree bindings for I2C busses -=========================================== - -This document describes generic bindings which can be used to describe I2C -busses and their child devices in a device tree. - -Required properties (per bus) ------------------------------ - -- #address-cells - should be <1>. Read more about addresses below. -- #size-cells - should be <0>. -- compatible - name of I2C bus controller - -For other required properties e.g. to describe register sets, -clocks, etc. check the binding documentation of the specific driver. - -The cells properties above define that an address of children of an I2C bus -are described by a single value. - -Optional properties (per bus) ------------------------------ - -These properties may not be supported by all drivers. However, if a driver -wants to support one of the below features, it should adapt these bindings. - -- clock-frequency - frequency of bus clock in Hz. - -- i2c-bus - For I2C adapters that have child nodes that are a mixture of both I2C - devices and non-I2C devices, the 'i2c-bus' subnode can be used for - populating I2C devices. If the 'i2c-bus' subnode is present, only - subnodes of this will be considered as I2C slaves. The properties, - '#address-cells' and '#size-cells' must be defined under this subnode - if present. - -- i2c-scl-falling-time-ns - Number of nanoseconds the SCL signal takes to fall; t(f) in the I2C - specification. - -- i2c-scl-internal-delay-ns - Number of nanoseconds the IP core additionally needs to setup SCL. - -- i2c-scl-rising-time-ns - Number of nanoseconds the SCL signal takes to rise; t(r) in the I2C - specification. - -- i2c-sda-falling-time-ns - 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. - -- multi-master - states that there is another master active on this bus. The OS can use - this information to adapt power management to keep the arbitration awake - all the time, for example. Can not be combined with 'single-master'. - -- pinctrl - add extra pinctrl to configure SCL/SDA pins to GPIO function for bus - recovery, call it "gpio" or "recovery" (deprecated) state - -- scl-gpios - specify the gpio related to SCL pin. Used for GPIO bus recovery. - -- sda-gpios - specify the gpio related to SDA pin. Optional for GPIO bus recovery. - -- single-master - states that there is no other master active on this bus. The OS can use - this information to detect a stalled bus more reliably, for example. - Can not be combined with 'multi-master'. - -- smbus - states that additional SMBus restrictions and features apply to this bus. - An example of feature is SMBusHostNotify. Examples of restrictions are - more reserved addresses and timeout definitions. - -- smbus-alert - states that the optional SMBus-Alert feature apply to this bus. - -- mctp-controller - indicates that the system is accessible via this bus as an endpoint for - MCTP over I2C transport. - -Required properties (per child device) --------------------------------------- - -- compatible - name of I2C slave device - -- reg - One or many I2C slave addresses. These are usually a 7 bit addresses. - However, flags can be attached to an address. I2C_TEN_BIT_ADDRESS is - used to mark a 10 bit address. It is needed to avoid the ambiguity - between e.g. a 7 bit address of 0x50 and a 10 bit address of 0x050 - which, in theory, can be on the same bus. - Another flag is I2C_OWN_SLAVE_ADDRESS to mark addresses on which we - listen to be devices ourselves. - -Optional properties (per child device) --------------------------------------- - -These properties may not be supported by all drivers. However, if a driver -wants to support one of the below features, it should adapt these bindings. - -- host-notify - device uses SMBus host notify protocol instead of interrupt line. - -- interrupts - interrupts used by the device. - -- interrupt-names - "irq", "wakeup" and "smbus_alert" names are recognized by I2C core, - other names are left to individual drivers. - -- reg-names - Names of map programmable addresses. - It can contain any map needing another address than default one. - -- wakeup-source - device can be used as a wakeup source. - -Binding may contain optional "interrupts" property, describing interrupts -used by the device. I2C core will assign "irq" interrupt (or the very first -interrupt if not using interrupt names) as primary interrupt for the slave. - -Alternatively, devices supporting SMBus Host Notify, and connected to -adapters that support this feature, may use "host-notify" property. I2C -core will create a virtual interrupt for Host Notify and assign it as -primary interrupt for the slave. - -Also, if device is marked as a wakeup source, I2C core will set up "wakeup" -interrupt for the device. If "wakeup" interrupt name is not present in the -binding, then primary interrupt will be used as wakeup interrupt. diff --git a/Documentation/devicetree/bindings/i2c/nvidia,tegra186-bpmp-i2c.yaml b/Documentation/devicetree/bindings/i2c/nvidia,tegra186-bpmp-i2c.yaml index b8319dcf3..8676335e9 100644 --- a/Documentation/devicetree/bindings/i2c/nvidia,tegra186-bpmp-i2c.yaml +++ b/Documentation/devicetree/bindings/i2c/nvidia,tegra186-bpmp-i2c.yaml @@ -21,8 +21,7 @@ description: | See ../firmware/nvidia,tegra186-bpmp.yaml for details of the BPMP binding. - This node represents an I2C controller. See ../i2c/i2c.txt for details - of the core I2C binding. + This node represents an I2C controller. properties: compatible: diff --git a/Documentation/devicetree/bindings/i2c/qcom,i2c-cci.yaml b/Documentation/devicetree/bindings/i2c/qcom,i2c-cci.yaml index 8386cfe21..f0eabff86 100644 --- a/Documentation/devicetree/bindings/i2c/qcom,i2c-cci.yaml +++ b/Documentation/devicetree/bindings/i2c/qcom,i2c-cci.yaml @@ -270,7 +270,7 @@ examples: port { ov7251_ep: endpoint { - data-lanes = <0 1>; + data-lanes = <0>; link-frequencies = /bits/ 64 <240000000 319200000>; remote-endpoint = <&csiphy3_ep>; }; diff --git a/Documentation/devicetree/bindings/i2c/renesas,rcar-i2c.yaml b/Documentation/devicetree/bindings/i2c/renesas,rcar-i2c.yaml index c4ace5585..51b220da4 100644 --- a/Documentation/devicetree/bindings/i2c/renesas,rcar-i2c.yaml +++ b/Documentation/devicetree/bindings/i2c/renesas,rcar-i2c.yaml @@ -53,6 +53,7 @@ properties: - renesas,i2c-r8a779a0 # R-Car V3U - renesas,i2c-r8a779f0 # R-Car S4-8 - renesas,i2c-r8a779g0 # R-Car V4H + - renesas,i2c-r8a779h0 # R-Car V4M - const: renesas,rcar-gen4-i2c # R-Car Gen4 reg: diff --git a/Documentation/devicetree/bindings/i2c/st,nomadik-i2c.yaml b/Documentation/devicetree/bindings/i2c/st,nomadik-i2c.yaml index 16024415a..44c54b162 100644 --- a/Documentation/devicetree/bindings/i2c/st,nomadik-i2c.yaml +++ b/Documentation/devicetree/bindings/i2c/st,nomadik-i2c.yaml @@ -14,9 +14,6 @@ description: The Nomadik I2C host controller began its life in the ST maintainers: - Linus Walleij <linus.walleij@linaro.org> -allOf: - - $ref: /schemas/i2c/i2c-controller.yaml# - # Need a custom select here or 'arm,primecell' will match on lots of nodes select: properties: @@ -24,21 +21,23 @@ select: contains: enum: - st,nomadik-i2c + - mobileye,eyeq5-i2c required: - compatible properties: compatible: oneOf: - # The variant found in STn8815 - items: - const: st,nomadik-i2c - const: arm,primecell - # The variant found in DB8500 - items: - const: stericsson,db8500-i2c - const: st,nomadik-i2c - const: arm,primecell + - items: + - const: mobileye,eyeq5-i2c + - const: arm,primecell reg: maxItems: 1 @@ -55,7 +54,7 @@ properties: - items: - const: mclk - const: apb_pclk - # Clock name in DB8500 + # Clock name in DB8500 or EyeQ5 - items: - const: i2cclk - const: apb_pclk @@ -70,6 +69,16 @@ properties: minimum: 1 maximum: 400000 + mobileye,olb: + $ref: /schemas/types.yaml#/definitions/phandle-array + items: + - items: + - description: Phandle to OLB system controller node. + - description: Platform-wide controller ID (integer starting from zero). + description: + The phandle pointing to OLB system controller node, with the I2C + controller index. + required: - compatible - reg @@ -79,6 +88,20 @@ required: unevaluatedProperties: false +allOf: + - $ref: /schemas/i2c/i2c-controller.yaml# + - if: + properties: + compatible: + contains: + const: mobileye,eyeq5-i2c + then: + required: + - mobileye,olb + else: + properties: + mobileye,olb: false + examples: - | #include <dt-bindings/interrupt-controller/irq.h> @@ -111,5 +134,19 @@ examples: clocks = <&i2c0clk>, <&pclki2c0>; clock-names = "mclk", "apb_pclk"; }; + - | + #include <dt-bindings/interrupt-controller/mips-gic.h> + i2c@300000 { + compatible = "mobileye,eyeq5-i2c", "arm,primecell"; + reg = <0x300000 0x1000>; + interrupt-parent = <&gic>; + interrupts = <GIC_SHARED 1 IRQ_TYPE_LEVEL_HIGH>; + clock-frequency = <400000>; + #address-cells = <1>; + #size-cells = <0>; + clocks = <&i2c_ser_clk>, <&i2c_clk>; + clock-names = "i2cclk", "apb_pclk"; + mobileye,olb = <&olb 0>; + }; ... |