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    SubjectRe: [RFC PATCH] clk: add extension API
    On Thu, May 31, 2012 at 09:19:16PM +0200, Mike Turquette wrote:
    > On 20120530-14:58, Rajendra Nayak wrote:
    > > Hi Peter,
    > >
    > > On Tuesday 29 May 2012 03:28 PM, Peter De Schrijver wrote:
    > > >Add an extension API for clocks. This allows clocktypes to provide extensions
    > > >for features which are uncommon and cannot be easily mapped onto normal clock
    > > >framework concecpts. eg: resetting blocks, configuring clock phase etc.
    > >
    > > I was thinking on similar lines for OMAP wherein I need to control
    > > 'hardware-auto-gating' bits on clocks which are otherwise just normal
    > > gates or dividers. We just disable all of them early at boot and
    > > re-enable them late in the boot process once PM kicks in.
    > >
    > It would be helpful to get an idea of what these different functions
    > actually do. This patch exposes a sort of poor man's ioctl/syscall
    > interface (which may indeed be necessary), but I would first prefer to
    > pool together everybody's needs and see if some new high-level APIs
    > should be added to clk.h.
    > Already a clk_reset/module reset call has been discussed in this thread.
    > The changelog discusses setting clock phase and Rajendra mentioned
    > controlling auto-gating behavior.
    > Do other folks have these same needs? What about other needs that are
    > unlisted? Please add them to the thread so we can get an idea of what
    > we're up against.

    * clock phase (invert or programmable delay)
    * external request line configuration



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