On 04/18/2012 08:16 AM, Wolfram Sang wrote:
-       if (i2c_data == NULL) {
-               dev_err(i2c->dev, "no I2C frequency data\n");
+       /*
+        * "clock-rate" is a legacy binding, the official binding is
+        * "clock-frequency".  Try the official one first and then
+        * fall back if it doesn't exist.
+        */
+       data = of_get_property(pdev->dev.of_node, "clock-frequency",&len);
+       if (!data || len != sizeof(*data))
+               data = of_get_property(pdev->dev.of_node, "clock-rate",&len);
+       if (data&&   len == sizeof(*data)) {
+               i2c->twsi_freq = be32_to_cpup(data);

Can't you use of_property_read_u32?

I will investigate, and use it if possible.

Any outcome?

Yes, I have implemented Rob's suggestions. A new patch set reflecting this is coming soon.


And shouldn't the bindings be documented? Or are they only standard and
we hide the legacy one?


Yes, they are documented here:

http://patchwork.linux-mips.org/patch/3536/

look in the cavium-i2c.txt file.

Thanks,
David Daney
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