* DT support for input-supply of regulator.
@ 2012-05-18 16:49 Laxman Dewangan
2012-05-19 10:44 ` Mark Brown
0 siblings, 1 reply; 3+ messages in thread
From: Laxman Dewangan @ 2012-05-18 16:49 UTC (permalink / raw)
To: Mark Brown, Stephen Warren; +Cc: linux-kernel
Hi Mark,
When mapping the dts file for different regulator, observe that the
input input-supply is not getting correctly.
I have following structure in the dts file for registering the regulators:
pmu: tps65910@d2 {
compatible = "ti,tps65910";
reg = <0xd2>;
#gpio-cells = <2>;
gpio-controller;
::::::::::
regulators {
vdd1_reg: vdd1 {
regulator-min-microvolt = < 600000>;
regulator-max-microvolt = <1500000>;
};
vdd2_reg: vdd2 {
regulator-min-microvolt = < 600000>;
regulator-max-microvolt = <1500000>;
vin-supply = <&vdd1_reg>
};
};
};
Now the regulator vdd1 get register properly, but when looking for the
registration for vdd2, it is not able to identify the
init_data->supply_regulator as we do not parse it.
So for this, I added the code in case on such
In function of_get_regulation_constraints()
if (of_find_property(np, "vin-supply", NULL))
(*init_data)->supply_regulator = "vin";
So when vdd2 registration happen, it looks for the vin-supply.
But when it looks for the device node containing this regulator, it
starts searching of the props from the dev_node of parent device i.e.
pmu: tps65910@d2 and in search, it does not found the vin-supply
property. It got property for compatible reg, gpio_cell, gpio-controller
and then no more property.
Is there any issue in laying down the regulator structure?
Thanks,
Laxman
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: DT support for input-supply of regulator.
2012-05-18 16:49 DT support for input-supply of regulator Laxman Dewangan
@ 2012-05-19 10:44 ` Mark Brown
2012-05-19 15:04 ` Laxman Dewangan
0 siblings, 1 reply; 3+ messages in thread
From: Mark Brown @ 2012-05-19 10:44 UTC (permalink / raw)
To: Laxman Dewangan; +Cc: Stephen Warren, linux-kernel
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On Fri, May 18, 2012 at 10:19:32PM +0530, Laxman Dewangan wrote:
> But when it looks for the device node containing this regulator, it
> starts searching of the props from the dev_node of parent device
> i.e. pmu: tps65910@d2 and in search, it does not found the
> vin-supply property. It got property for compatible reg, gpio_cell,
> gpio-controller and then no more property.
> Is there any issue in laying down the regulator structure?
I'm sorry but I'm having a really hard time parsing what you're saying
above. It sounds like there's some sort of device tree specific bug
that needs fixing.
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: DT support for input-supply of regulator.
2012-05-19 10:44 ` Mark Brown
@ 2012-05-19 15:04 ` Laxman Dewangan
0 siblings, 0 replies; 3+ messages in thread
From: Laxman Dewangan @ 2012-05-19 15:04 UTC (permalink / raw)
To: Mark Brown; +Cc: Stephen Warren, linux-kernel
On Saturday 19 May 2012 04:14 PM, Mark Brown wrote:
> * PGP Signed by an unknown key
>
> On Fri, May 18, 2012 at 10:19:32PM +0530, Laxman Dewangan wrote:
>
>> But when it looks for the device node containing this regulator, it
>> starts searching of the props from the dev_node of parent device
>> i.e. pmu: tps65910@d2 and in search, it does not found the
>> vin-supply property. It got property for compatible reg, gpio_cell,
>> gpio-controller and then no more property.
>> Is there any issue in laying down the regulator structure?
> I'm sorry but I'm having a really hard time parsing what you're saying
> above. It sounds like there's some sort of device tree specific bug
> that needs fixing.
>
I found small issue in core regulator and the tps65910 regulator driver
where it was not passing correct regulator node. After fixing this, it
worked fine.
I already sent the patches for review.
Thanks,
Laxman
^ permalink raw reply [flat|nested] 3+ messages in thread
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