bindings/i2c/snps%2Cdesignware-i2c.yaml

1 # 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   - Jarkko Nikula <jarkko.nikula@linux.intel.com>
13   - $ref: /schemas/i2c/i2c-controller.yaml#
14   - if:
19               const: mscc,ocelot-i2c
28       - description: Generic Synopsys DesignWare I2C controller
29         const: snps,designware-i2c
30       - description: Microsemi Ocelot SoCs I2C controller
32           - const: mscc,ocelot-i2c
33           - const: snps,designware-i2c
34       - description: Baikal-T1 SoC System I2C controller
35         const: baikal,bt1-sys-i2c
36       - description: T-HEAD TH1520 SoCs I2C controller
38           - const: thead,th1520-i2c
39           - const: snps,designware-i2c
44       - description: DW APB I2C controller memory mapped registers
45       - description: |
46           ICPU_CFG:TWI_DELAY registers to setup the SDA hold time.
47           This registers are specific to the Ocelot I2C-controller.
55       - description: I2C controller reference clock source
56       - description: APB interface clock source
58   clock-names:
61       - const: ref
62       - const: pclk
67   clock-frequency:
68     description: Desired I2C bus clock frequency in Hz
72   i2c-sda-hold-time-ns:
74       The property should contain the SDA hold time in nanoseconds. This option
78   i2c-scl-falling-time-ns:
80       The property should contain the SCL falling time in nanoseconds.
84   i2c-sda-falling-time-ns:
86       The property should contain the SDA falling time in nanoseconds.
92       - description: TX DMA Channel
93       - description: RX DMA Channel
95   dma-names:
97       - const: tx
98       - const: rx
103   - compatible
104   - reg
105   - interrupts
108   - |
109     i2c@f0000 {
110       compatible = "snps,designware-i2c";
113       clock-frequency = <400000>;
115   - |
116     i2c@1120000 {
117       compatible = "snps,designware-i2c";
120       clock-frequency = <400000>;
121       i2c-sda-hold-time-ns = <300>;
122       i2c-sda-falling-time-ns = <300>;
123       i2c-scl-falling-time-ns = <300>;
125   - |
126     i2c@2000 {
127       compatible = "snps,designware-i2c";
129       #address-cells = <1>;
130       #size-cells = <0>;
131       clock-frequency = <400000>;
140   - |
141     i2c@100400 {
142       compatible = "mscc,ocelot-i2c", "snps,designware-i2c";
144       pinctrl-0 = <&i2c_pins>;
145       pinctrl-names = "default";