On 9/27/2011 5:05 PM, Mark Brown wrote:
On Tue, Sep 27, 2011 at 08:18:04PM +0530, Rajendra Nayak wrote:
On Tuesday 27 September 2011 05:40 PM, Mark Brown wrote:
On Tue, Sep 27, 2011 at 03:42:45PM +0530, Rajendra Nayak wrote:
+ init_data = devm_kzalloc(dev, sizeof(struct regulator_init_data),
+ GFP_KERNEL);
+ if (!init_data)
+ return NULL; /* Out of memory? */
This means that the init data will be kept around for the entire
lifetime of the device rather than being discarded.
Wasn't it the same while this was passed around as platform_data?
It was in the past but I remember fixing it at some point. Perhaps I'm
imagining things.
+ init_data->supply_regulator = (char *)of_get_property(dev->of_node,
+ "regulator-supplies", NULL);
I'd expect that in the device tree world the supply regulator would
reference the node for that regulator.
You mean using phandles? Thats what Grant proposed too but
I thought you instead had an inclination towards names? Or maybe
I misunderstood.
They need both. We need to reference the device that provides the
supply and use a name to say which of the potentially multiple supplies
on the consumer device is which.
Hrm, I think loosing the signs here is bad karma - negative voltages do
exist after all.
Oops.. they do? didn't know about that.
Yup, ground is just a reference point.
Yep, we do have a negative charge pump to generate -1.9v from 3.8v to
supply the audio power amplifier part in twl6040 for example.
Benoit
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