On 03/06/2012 10:00 PM, Simon Glass wrote:
> Add U-Boot's peripheral clock information to the Tegra20 device tree file.
>
> Signed-off-by: Simon Glass <sjg@xxxxxxxxxxxx>
...
> diff --git a/doc/device-tree-bindings/i2c/tegra20-i2c.txt b/doc/device-tree-bindings/i2c/tegra20-i2c.txt
...
> +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:
I'd rather rely on the common clock binding documentation for the format
of the clock specifiers than duplicate the information here. True, that
document isn't in U-Boot (nor is it final). I.e.:
Two clocks must be specified:
But I think this is fine for now (I might care more if submitting a doc
file for the kernel tree), so
Acked-by: Stephen Warren <swarren@xxxxxxxxxxxxx>
> + - 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>;
> + };
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