7 Mar
2012
7 Mar
'12
9:39 p.m.
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
- the I2C clock to use for the peripheral- the pll_p_out3 clock, which can be used for fast operation. Thisdoes 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>;- };