Re: [PATCH v2] clk: qcom: gdsc: Fix handling of hw control enable/disable

From: Stephen Boyd
Date: Thu Jan 26 2017 - 19:00:27 EST

On 01/23, Rajendra Nayak wrote:
> Once a gdsc is brought in and out of HW control, there is a
> power down and up cycle which can take upto 1us. Polling on
> the gdsc status immediately after the hw control enable/disable
> can mislead software/firmware to belive the gdsc is already either on
> or off, while its yet to complete the power cycle.
> To avoid this add a 1us delay post a enable/disable of HW control
> mode.
> Also after the HW control mode is disabled, poll on the status to
> check gdsc status reflects its 'on' before force disabling it
> in software.
> Reported-by: Stanimir Varbanov <stanimir.varbanov@xxxxxxxxxx>
> Signed-off-by: Rajendra Nayak <rnayak@xxxxxxxxxxxxxx>
> ---

Applied to clk-next + I added a fixes tag. I don't think any
driver is affected by this problem in mainline, hence the punt to

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