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-rw-r--r--Documentation/powerpc/dts-bindings/fsl/i2c.txt46
1 files changed, 31 insertions, 15 deletions
diff --git a/Documentation/powerpc/dts-bindings/fsl/i2c.txt b/Documentation/powerpc/dts-bindings/fsl/i2c.txt
index d0ab33e21fe6..b6d2e21474f9 100644
--- a/Documentation/powerpc/dts-bindings/fsl/i2c.txt
+++ b/Documentation/powerpc/dts-bindings/fsl/i2c.txt
@@ -7,8 +7,10 @@ Required properties :
7 7
8Recommended properties : 8Recommended properties :
9 9
10 - compatible : Should be "fsl-i2c" for parts compatible with 10 - compatible : compatibility list with 2 entries, the first should
11 Freescale I2C specifications. 11 be "fsl,CHIP-i2c" where CHIP is the name of a compatible processor,
12 e.g. mpc8313, mpc8543, mpc8544, mpc5200 or mpc5200b. The second one
13 should be "fsl-i2c".
12 - interrupts : <a b> where a is the interrupt number and b is a 14 - interrupts : <a b> where a is the interrupt number and b is a
13 field that represents an encoding of the sense and level 15 field that represents an encoding of the sense and level
14 information for the interrupt. This should be encoded based on 16 information for the interrupt. This should be encoded based on
@@ -16,17 +18,31 @@ Recommended properties :
16 controller you have. 18 controller you have.
17 - interrupt-parent : the phandle for the interrupt controller that 19 - interrupt-parent : the phandle for the interrupt controller that
18 services interrupts for this device. 20 services interrupts for this device.
19 - dfsrr : boolean; if defined, indicates that this I2C device has 21 - fsl,preserve-clocking : boolean; if defined, the clock settings
20 a digital filter sampling rate register 22 from the bootloader are preserved (not touched).
21 - fsl5200-clocking : boolean; if defined, indicated that this device 23 - clock-frequency : desired I2C bus clock frequency in Hz.
22 uses the FSL 5200 clocking mechanism. 24
23 25Examples :
24Example : 26
25 i2c@3000 { 27 i2c@3d00 {
26 interrupt-parent = <40000>; 28 #address-cells = <1>;
27 interrupts = <1b 3>; 29 #size-cells = <0>;
28 reg = <3000 18>; 30 compatible = "fsl,mpc5200b-i2c","fsl,mpc5200-i2c","fsl-i2c";
29 device_type = "i2c"; 31 cell-index = <0>;
30 compatible = "fsl-i2c"; 32 reg = <0x3d00 0x40>;
31 dfsrr; 33 interrupts = <2 15 0>;
34 interrupt-parent = <&mpc5200_pic>;
35 fsl,preserve-clocking;
32 }; 36 };
37
38 i2c@3100 {
39 #address-cells = <1>;
40 #size-cells = <0>;
41 cell-index = <1>;
42 compatible = "fsl,mpc8544-i2c", "fsl-i2c";
43 reg = <0x3100 0x100>;
44 interrupts = <43 2>;
45 interrupt-parent = <&mpic>;
46 clock-frequency = <400000>;
47 };
48