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author | Thomas Gleixner <tglx@linutronix.de> | 2019-05-06 12:04:12 +0200 |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2019-05-06 12:04:12 +0200 |
commit | fb4e0592654adb31bc6f3a738d6499b816a655d6 (patch) | |
tree | e6edaf18cf3a7f49e93fb51de5a47f4b9e786f53 /Documentation/devicetree/bindings/i2c/i2c-sun6i-p2wi.txt | |
parent | irq_work: Do not raise an IPI when queueing work on the local CPU (diff) | |
parent | iommu/dma-iommu: Remove iommu_dma_map_msi_msg() (diff) | |
download | linux-dev-fb4e0592654adb31bc6f3a738d6499b816a655d6.tar.xz linux-dev-fb4e0592654adb31bc6f3a738d6499b816a655d6.zip |
Merge tag 'irqchip-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core
Pull irqchip updates from Marc Zyngier
- The huge (and terrifying) TI INTR/INTA set of drivers
- Rewrite of the stm32mp1-exti driver as a platform driver
- Update the IOMMU MSI mapping API to be RT friendly
- A number of cleanups and other low impact fixes
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>; + + /* ... */ + }; + }; |