On Thu, Mar 05, 2015 at 02:41:16PM +0200, Kalle Valo wrote:
> Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxxxx> writes:
>
> > Some of of qca988x solutions are having global reset issue
> > during target initialization. Bypassing PLL setting before
> > downloading firmware and letting the SoC run on REF_CLK is fixing
> > the problem. Corresponding firmware change is also needed to set
> > the clock source once the target is initialized. Since 10.2.4
> > firmware is having this ROM patch, applying skip_clock_init only
> > for 10.2.4 firmware versions.
> >
> > Signed-off-by: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxxxx>
> > ---
> > drivers/net/wireless/ath/ath10k/core.c | 10 ++++++++++
> > 1 file changed, 10 insertions(+)
> >
> > diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
> > index 310e12b..cd20805 100644
> > --- a/drivers/net/wireless/ath/ath10k/core.c
> > +++ b/drivers/net/wireless/ath/ath10k/core.c
> > @@ -797,6 +797,16 @@ static int ath10k_download_cal_data(struct ath10k *ar)
> > ar->cal_mode = ATH10K_CAL_MODE_OTP;
> >
> > done:
> > + if ((ar->hw_rev == ATH10K_HW_QCA988X) &&
> > + (ar->wmi.op_version == ATH10K_FW_WMI_OP_VERSION_10_2_4)) {
> > + ret = ath10k_bmi_write32(ar, hi_skip_clock_init, 1);
> > + if (ret) {
> > + ath10k_err(ar, "could not write skip_clock_init (%d)\n",
> > + ret);
> > + return ret;
> > + }
> > + }
>
> Didn't Michal mention that this should be a firmware feature flag?
> Checking for firmware versions can easily get too complicated, that's
> why we have tried to use feature flags for things like this.
>
Oops.. Sorry for the delay. I missed this mail. IIRC i replied to
Michal's question for previous version. From the existing fw_feature
flag, there is no clear way to identify 10.2.4 firmware version. Since
this patch is needed only for 10.2.4, I used op_version. Otherwise
fw_feature has to be extended for 10.2.4. Am i correct?
> Also I think this should not be hidden inside
> ath10k_download_cal_data(). Maybe ath10k_core_start() is a better place
> to do this?
>
Hmm.. agree.
> I can send v3 for this patch.
>
Thanks for taking care of this. Please let me know if you need help.
-Rajkumar
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