Hello Masahiro,
Am 18.11.2014 13:32, schrieb Masahiro Yamada:
Hi Simon,
On Tue, 11 Nov 2014 10:46:24 -0700
Simon Glass <[email protected]> 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 <[email protected]>
---
+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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