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SubjectRe: [PATCH v3 1/2] usb: ehci-exynos: Make provision for vdd regulators
2014-06-25 21:42 GMT+09:00 Vivek Gautam <>:
> Facilitate getting required 3.3V and 1.0V VDD supply for
> EHCI controller on Exynos.
> With the patches for regulators' nodes merged in 3.15:
> c8c253f ARM: dts: Add regulator entries to smdk5420
> 275dcd2 ARM: dts: add max77686 pmic node for smdk5250,
> the exynos systems turn on only minimal number of regulators.
> Until now, the VDD regulator supplies were either turned on
> by the bootloader, or the regulators were enabled by default
> in the kernel, so that the controller drivers did not need to
> care about turning on these regulators on their own.
> This was rather bad about these controller drivers.
> So ensuring now that the controller driver requests the necessary
> VDD regulators (if available, unless there are direct VDD rails),
> and enable them so as to make them working.
> Signed-off-by: Vivek Gautam <>
> Cc: Jingoo Han <>
> Cc: Alan Stern <>
> ---
> Changes from v2:
> - replaced devm_regulator_get() with devm_regulator_get_optional().
> - Added Documentation for the vdd supplies for the controller.
> - Re-did the commit message.

The patch looks useful but it seems it was forgotten. Do you have any
plans to resend it?

Best regards,

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