[U-Boot] [PATCH v2 08/17] dm: i2c: Add a uclass for I2C

Heiko Schocher
2014-11-18T12:35:17Z

Hello Masahiro,

Am 18.11.2014 13:32, schrieb Masahiro Yamada:
> Hi Simon,
>
>
> On Tue, 11 Nov 2014 10:46:24 -0700
> Simon Glass <sjg@chromium.org> wrote:
>
>> The uclass implements the same operations as the current I2C framework but
>> makes some changes to make it fit driver model better:
>>
>> - Remove the chip address from API calls
>> - Remove the address length from API calls
>> - Remove concept of 'current' I2C bus
>> - Drop all existing init functions
>>
>> Signed-off-by: Simon Glass <sjg@chromium.org>
>> ---
>>
>
>> +static int i2c_post_probe(struct udevice *dev)
>> +{
>> + struct dm_i2c_bus *i2c = dev->uclass_priv;
>> +
>> + i2c->speed_hz = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
>> + "clock-frequency", 100000);
>> +
>> + return i2c_set_bus_speed(dev, i2c->speed_hz);
>> +}
>
> This code in drivers/i2c/i2c-uclass.c seems to highly depends on Device Tree.
>
> I am not sure if I understood correctly, but
> does this work on non Device Tree SoCs?

No. Devie Model is currently (as I understand) useable with
Device Tree ...

bye,
Heiko
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