mirror of
https://github.com/torvalds/linux.git
synced 2024-11-19 18:41:48 +00:00
791d3ef2e1
'interrupt-parent' is often documented as part of define bindings, but it is really outside the scope of a device binding. It's never required in a given node as it is often inherited from a parent node. Or it can be implicit if a parent node is an 'interrupt-controller' node. So remove it from all the binding files. Cc: Mark Rutland <mark.rutland@arm.com> Cc: devicetree@vger.kernel.org Signed-off-by: Rob Herring <robh@kernel.org>
49 lines
1.3 KiB
Plaintext
49 lines
1.3 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 in the second cell
|
|
- resets : phandle to reset controller with the reset number in
|
|
the second cell
|
|
- interrupts : interrupt number
|
|
|
|
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 = <&syscon ASPEED_CLK_APB>;
|
|
resets = <&syscon ASPEED_RESET_I2C>;
|
|
bus-frequency = <100000>;
|
|
interrupts = <0>;
|
|
interrupt-parent = <&i2c_ic>;
|
|
};
|
|
};
|