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Q: i2c-mux-pca954x.c : How to get deselect activated via device tree?

DISCUSSION Michael Lawnick 1 participant 1 message Oct 24, 2014 I2C subsystem host drivers

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Hi,

there is means to unselect I2C multiplexer pca954x after every transfer.
I've now run into situation where I need this feature: When two multiplexers are on same bus and they host devices with same address.

I could not yet find out from documentation or sources how to get deselect feature enabled:

i2c-mux-pca954x.c:pca954x_probe()
...

			i2c_add_mux_adapter(adap, &client->dev, client,
				force, num, class, pca954x_select_chan,
				(pdata && pdata->modes[num].deselect_on_exit)
					? pca954x_deselect_mux : NULL);

...

How to initialize pdata->modes[num].deselect_on_exit? Some attribute in device tree should do the trick, shouldn't it?

Has anybody a useful hint?

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Michael