aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/i2c/i2c-altera.txt
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2017-09-15 17:49:46 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-09-15 17:49:46 -0700
commitbbe05e543bfeab1c37127f38b7e575db916fbc6c (patch)
tree30c8f1dc6465e6a5b31f51f4468cd7e7114dcde3 /Documentation/devicetree/bindings/i2c/i2c-altera.txt
parentMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm (diff)
parenti2c: i2c-stm32f7: add driver (diff)
downloadlinux-dev-bbe05e543bfeab1c37127f38b7e575db916fbc6c.tar.xz
linux-dev-bbe05e543bfeab1c37127f38b7e575db916fbc6c.zip
Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull more i2c updates from Wolfram Sang: "I2C has two more new drivers: Altera FPGA and STM32F7" * 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: i2c-stm32f7: add driver i2c: i2c-stm32f4: use generic definition of speed enum dt-bindings: i2c-stm32: Document the STM32F7 I2C bindings i2c: altera: Add Altera I2C Controller driver dt-bindings: i2c: Add Altera I2C Controller
Diffstat (limited to 'Documentation/devicetree/bindings/i2c/i2c-altera.txt')
-rw-r--r--Documentation/devicetree/bindings/i2c/i2c-altera.txt39
1 files changed, 39 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/i2c/i2c-altera.txt b/Documentation/devicetree/bindings/i2c/i2c-altera.txt
new file mode 100644
index 000000000000..767664f448ec
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/i2c-altera.txt
@@ -0,0 +1,39 @@
+* Altera I2C Controller
+* This is Altera's synthesizable logic block I2C Controller for use
+* in Altera's FPGAs.
+
+Required properties :
+ - compatible : should be "altr,softip-i2c-v1.0"
+ - reg : Offset and length of the register set for the device
+ - interrupts : <IRQ> where IRQ is the interrupt number.
+ - clocks : phandle to input clock.
+ - #address-cells = <1>;
+ - #size-cells = <0>;
+
+Recommended properties :
+ - clock-frequency : desired I2C bus clock frequency in Hz.
+
+Optional properties :
+ - fifo-size : Size of the RX and TX FIFOs in bytes.
+ - Child nodes conforming to i2c bus binding
+
+Example :
+
+ i2c@100080000 {
+ compatible = "altr,softip-i2c-v1.0";
+ reg = <0x00000001 0x00080000 0x00000040>;
+ interrupt-parent = <&intc>;
+ interrupts = <0 43 4>;
+ clocks = <&clk_0>;
+ clock-frequency = <100000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ fifo-size = <4>;
+
+ eeprom@51 {
+ compatible = "atmel,24c32";
+ reg = <0x51>;
+ pagesize = <32>;
+ };
+ };
+