tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1Device tree configuration for i2c-ocores
2
3Required properties:
4- compatible : "opencores,i2c-ocores" or "aeroflexgaisler,i2cmst"
5- reg : bus address start and address range size of device
6- interrupts : interrupt number
7- clock-frequency : frequency of bus clock in Hz
8- #address-cells : should be <1>
9- #size-cells : should be <0>
10
11Optional properties:
12- reg-shift : device register offsets are shifted by this value
13- reg-io-width : io register width in bytes (1, 2 or 4)
14- regstep : deprecated, use reg-shift above
15
16Example:
17
18 i2c0: ocores@a0000000 {
19 #address-cells = <1>;
20 #size-cells = <0>;
21 compatible = "opencores,i2c-ocores";
22 reg = <0xa0000000 0x8>;
23 interrupts = <10>;
24 clock-frequency = <20000000>;
25
26 reg-shift = <0>; /* 8 bit registers */
27 reg-io-width = <1>; /* 8 bit read/write */
28
29 dummy@60 {
30 compatible = "dummy";
31 reg = <0x60>;
32 };
33 };