linux-kernel - Re: [PATCH v3 8/9] soc: qcom: cpr3: Add IPQ9574 definitions

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Date: Thu, 27 Jun 2024 12:53:18 +0530
From: Varadarajan Narayanan <quic_varada@...cinc.com>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
CC: <robh@...nel.org>, <krzk+dt@...nel.org>, <conor+dt@...nel.org>,
        <angelogioacchino.delregno@...labora.com>, <andersson@...nel.org>,
        <konrad.dybcio@...aro.org>, <mturquette@...libre.com>,
        <sboyd@...nel.org>, <ilia.lin@...nel.org>, <rafael@...nel.org>,
        <viresh.kumar@...aro.org>, <ulf.hansson@...aro.org>,
        <quic_sibis@...cinc.com>, <otto.pflueger@...cue.de>,
        <neil.armstrong@...aro.org>, <luca@...tu.xyz>, <abel.vesa@...aro.org>,
        <danila@...xyga.com>, <quic_ipkumar@...cinc.com>,
        <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <linux-pm@...r.kernel.org>
Subject: Re: [PATCH v3 8/9] soc: qcom: cpr3: Add IPQ9574 definitions

On Wed, Jun 26, 2024 at 09:27:53PM +0300, Dmitry Baryshkov wrote:
> On Wed, Jun 26, 2024 at 04:10:01PM GMT, Varadarajan Narayanan wrote:
> > From: Praveenkumar I <quic_ipkumar@...cinc.com>
> >
> > Add thread, scaling factor, CPR descriptor defines to enable CPR
> > on IPQ9574.
> >
> > Signed-off-by: Praveenkumar I <quic_ipkumar@...cinc.com>
> > Signed-off-by: Varadarajan Narayanan <quic_varada@...cinc.com>
> > ---
> > v3: Fix patch author
> >     Included below information in cover letter
> > v2: Fix Signed-off-by order
> > Depends:
> > 	[1] https://lore.kernel.org/lkml/20230217-topic-cpr3h-v14-0-9fd23241493d@linaro.org/T/
> > 	[2] https://github.com/quic-varada/cpr/commits/konrad/
> > ---
> >  drivers/pmdomain/qcom/cpr3.c | 137 +++++++++++++++++++++++++++++++++++
> >  1 file changed, 137 insertions(+)
> >
> > diff --git a/drivers/pmdomain/qcom/cpr3.c b/drivers/pmdomain/qcom/cpr3.c
> > index c28028be50d8..66c8a4bd9adc 100644
> > --- a/drivers/pmdomain/qcom/cpr3.c
> > +++ b/drivers/pmdomain/qcom/cpr3.c
>
> > +
> > +static const struct cpr_desc ipq9574_cpr_desc = {
> > +	.cpr_type = CTRL_TYPE_CPR4,
>
> So, is it CPR4 or CPRh?

CPR4.

> > +	.num_threads = 1,
> > +	.apm_threshold = 850000,
> > +	.apm_crossover = 880000,
> > +	.apm_hysteresis = 0,
> > +	.cpr_base_voltage = 700000,
> > +	.cpr_max_voltage = 1100000,
> > +	.timer_delay_us = 5000,
> > +	.timer_cons_up = 0,
> > +	.timer_cons_down = 0,
> > +	.up_threshold = 2,
> > +	.down_threshold = 2,
> > +	.idle_clocks = 15,
> > +	.count_mode = CPR3_CPR_CTL_COUNT_MODE_ALL_AT_ONCE_MIN,
> > +	.count_repeat = 1,
> > +	.gcnt_us = 1,
> > +	.vreg_step_fixed = 12500,
> > +	.vreg_step_up_limit = 1,
> > +	.vreg_step_down_limit = 1,
> > +	.vdd_settle_time_us = 34,
> > +	.corner_settle_time_us = 6,
> > +	.reduce_to_corner_uV = true,
> > +	.hw_closed_loop_en = false,
> > +	.threads = (const struct cpr_thread_desc *[]) {
> > +		&ipq9574_thread_silver,
>
> If it's silver, where is gold or bronze?

Will rename this as "ipq9574_thread"

Thanks
Varada

> > +	},
> > +};
> > +
> > +static const struct cpr_acc_desc ipq9574_cpr_acc_desc = {
> > +	.cpr_desc = &ipq9574_cpr_desc,
> > +};
> > +
> >  static const int sdm630_gold_scaling_factor[][CPR3_RO_COUNT] = {
> >  	/* Same RO factors for all fuse corners */
> >  	{
> > @@ -2828,6 +2964,7 @@ static void cpr_remove(struct platform_device *pdev)
> >  }
> >
> >  static const struct of_device_id cpr3_match_table[] = {
> > +	{ .compatible = "qcom,ipq9574-cprh", .data = &ipq9574_cpr_acc_desc },
> >  	{ .compatible = "qcom,msm8998-cprh", .data = &msm8998_cpr_acc_desc },
> >  	{ .compatible = "qcom,sdm630-cprh", .data = &sdm630_cpr_acc_desc },
> >  	{ }
> > --
> > 2.34.1
> >
>
> --
> With best wishes
> Dmitry