Hi Stephen,
On Wed, Mar 7, 2012 at 12:39 PM, Stephen Warren swarren@wwwdotorg.org wrote:
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@chromium.org
...
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@wwwdotorg.org
Thanks. Good to get this in.
Regards, Simon
- - 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>;
- };