Re: [PATCH 1/5] i2c: Convert i2c-octeon.c to use device tree.

From: Wolfram Sang
Date: Wed Apr 18 2012 - 11:16:41 EST


> >>- 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?

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

Regards,

Wolfram

--
Pengutronix e.K. | Wolfram Sang |
Industrial Linux Solutions | http://www.pengutronix.de/ |

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