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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-29 14:56:53 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-29 14:56:53 -0700 |
| commit | 4ad528360cf6455bfaaf9164350ed74cbfadc7c5 (patch) | |
| tree | 770e453bf85a6f4ffe4bbb8cc83e53b3ff7f743e /Documentation/devicetree/bindings/i2c/i2c-sun6i-p2wi.txt | |
| parent | 9a4a6f0dc1eaa7b5e4a834b13596faeb0d4b7ac3 (diff) | |
| parent | 080a910414659dfd18ffaf60a1e95b96c3f50eab (diff) | |
Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"A new ID for the i801 driver and some Documentation fixes to make it
easier for people to find the bindings (which is also a basis for
further improvements in that area)"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: wmt: make bindings file name match the driver
i2c: sun6i-p2wi: make bindings file name match the driver
i2c: stu300: make bindings file name match the driver
i2c: mt65xx: make bindings file name match the driver
i2c: iop3xx: make bindings file name match the driver
i2c: i801: Add support for Intel Comet Lake
Diffstat (limited to 'Documentation/devicetree/bindings/i2c/i2c-sun6i-p2wi.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/i2c/i2c-sun6i-p2wi.txt | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/i2c/i2c-sun6i-p2wi.txt b/Documentation/devicetree/bindings/i2c/i2c-sun6i-p2wi.txt new file mode 100644 index 000000000000..49df0053347a --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/i2c-sun6i-p2wi.txt @@ -0,0 +1,41 @@ + +* Allwinner P2WI (Push/Pull 2 Wire Interface) controller + +Required properties : + + - reg : Offset and length of the register set for the device. + - compatible : Should one of the following: + - "allwinner,sun6i-a31-p2wi" + - interrupts : The interrupt line connected to the P2WI peripheral. + - clocks : The gate clk connected to the P2WI peripheral. + - resets : The reset line connected to the P2WI peripheral. + +Optional properties : + + - clock-frequency : Desired P2WI bus clock frequency in Hz. If not set the +default frequency is 100kHz + +A P2WI may contain one child node encoding a P2WI slave device. + +Slave device properties: + Required properties: + - reg : the I2C slave address used during the initialization + process to switch from I2C to P2WI mode + +Example: + + p2wi@1f03400 { + compatible = "allwinner,sun6i-a31-p2wi"; + reg = <0x01f03400 0x400>; + interrupts = <0 39 4>; + clocks = <&apb0_gates 3>; + clock-frequency = <6000000>; + resets = <&apb0_rst 3>; + + axp221: pmic@68 { + compatible = "x-powers,axp221"; + reg = <0x68>; + + /* ... */ + }; + }; |