Re: [Bug?] OMAP4+: pbias functionality is broken

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Hi,

On Wednesday 22 July 2015 10:32 PM, Grygorii Strashko wrote:
> +Cc: Kishon Vijay Abraham I <kishon@xxxxxx>
> 
> On 07/22/2015 07:48 PM, Grygorii Strashko wrote:
>> Hi Tony, Tero, All,
>>
>> It seems MMC PBIAS regulator functionality is broken now (on DRA7 at least).
>>
>> 1) On DRA7 I can see that "pbias_regulator: pbias_regulator" device is not
>> registered. It happens because pbias_mmc_reg is defined in DT as child
>> of scm_conf: scm_conf@0 which is "syscon" and, as result, it's not populated
>> neither by of_platform_populate neither by Syscon driver.
>>
>> 	scm_conf: scm_conf@0 {
>> 		compatible = "syscon", "simple-bus";
>> 		reg = <0x0 0x1400>;
>> 		#address-cells = <1>;
>> 		#size-cells = <1>;
>>
>> 		pbias_regulator: pbias_regulator {
>>
>>
>> 2) if I add "simple-bus" to scm_conf the "pbias_regulator: pbias_regulator"
>> device will be registered
>> 	scm_conf: scm_conf@0 {
>> 		compatible = "syscon", "simple-bus";
>> but its probe will fail:
>> [    0.682549] pbias-regulator: probe of 4a002000.scm_conf:pbias_regulator failed with error -22

I have a fix for this. I'll post it to LO.

Thanks
Kishon
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