Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / doc / device-tree-bindings / i2c / tegra20-i2c.txt

diff --git a/qemu/roms/u-boot/doc/device-tree-bindings/i2c/tegra20-i2c.txt b/qemu/roms/u-boot/doc/device-tree-bindings/i2c/tegra20-i2c.txt
new file mode 100644 (file)
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--- /dev/null
+++ b/qemu/roms/u-boot/doc/device-tree-bindings/i2c/tegra20-i2c.txt
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+(Placeholder note while we locate the kernel Tegra20 bindings)
+
+Added in U-Boot:
+
+Required properties:
+ - clocks : Two clocks must be given, each as a phandle to the Tegra's
+           CAR node and the clock number as a parameter:
+     - the I2C clock to use for the peripheral
+     - the pll_p_out3 clock, which can be used for fast operation. This
+         does not change and is the same for all I2C nodes.
+
+Example:
+(TODO: merge with existing example):
+
+       i2c@7000c400 {
+               #address-cells = <1>;
+               #size-cells = <0>;
+               compatible = "nvidia,tegra20-i2c";
+               reg = <0x7000C400 0x100>;
+               interrupts = < 116 >;
+               /* PERIPH_ID_I2C2, PLL_P_OUT3 */
+               clocks = <&tegra_car 54>, <&tegra_car 124>;
+       };