threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
49 lines
1.2 KiB
Plaintext
49 lines
1.2 KiB
Plaintext
Device tree configuration for the I2C busses on the AST24XX and AST25XX SoCs.
|
|
|
|
Required Properties:
|
|
- #address-cells : should be 1
|
|
- #size-cells : should be 0
|
|
- reg : address offset and range of bus
|
|
- compatible : should be "aspeed,ast2400-i2c-bus"
|
|
or "aspeed,ast2500-i2c-bus"
|
|
- clocks : root clock of bus, should reference the APB
|
|
clock
|
|
- interrupts : interrupt number
|
|
- interrupt-parent : interrupt controller for bus, should reference a
|
|
aspeed,ast2400-i2c-ic or aspeed,ast2500-i2c-ic
|
|
interrupt controller
|
|
|
|
Optional Properties:
|
|
- bus-frequency : frequency of the bus clock in Hz defaults to 100 kHz when not
|
|
specified
|
|
- multi-master : states that there is another master active on this bus.
|
|
|
|
Example:
|
|
|
|
i2c {
|
|
compatible = "simple-bus";
|
|
#address-cells = <1>;
|
|
#size-cells = <1>;
|
|
ranges = <0 0x1e78a000 0x1000>;
|
|
|
|
i2c_ic: interrupt-controller@0 {
|
|
#interrupt-cells = <1>;
|
|
compatible = "aspeed,ast2400-i2c-ic";
|
|
reg = <0x0 0x40>;
|
|
interrupts = <12>;
|
|
interrupt-controller;
|
|
};
|
|
|
|
i2c0: i2c-bus@40 {
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
#interrupt-cells = <1>;
|
|
reg = <0x40 0x40>;
|
|
compatible = "aspeed,ast2400-i2c-bus";
|
|
clocks = <&clk_apb>;
|
|
bus-frequency = <100000>;
|
|
interrupts = <0>;
|
|
interrupt-parent = <&i2c_ic>;
|
|
};
|
|
};
|