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SubjectRe: [PATCH 1/6] usb: host: add has_tdi_phy_lpm capability bit
On Wed, 31 Jul 2013, Tuomas Tynkkynen wrote:

> The has_hostpc capability bit indicates that the host controller has the
> HOSTPC register extensions, but at the same time enables clock disabling
> power saving features with the PHY Low Power Clock Disable (PHCD) bit.
> However, some host controllers have the HOSTPC extensions but don't
> support the low-power feature, so the PHCD bit must not be set on those
> controllers. Add a separate capability bit for the low-power feature
> instead, and change all existing users of has_hostpc to use this new
> capability bit.
> The idea for this commit is taken from an old 2012 commit that never got
> merged ("disociate chipidea PHY low power suspend control from hostpc")
> Inspired-by: Matthieu CASTET <>
> Signed-off-by: Tuomas Tynkkynen <>

Acked-by: Alan Stern <>

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