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From: Dmitry Osipenko <digetx@gmail.com>
To: Rajendra Nayak <rnayak@codeaurora.org>,
	ulf.hansson@linaro.org, bjorn.andersson@linaro.org,
	viresh.kumar@linaro.org
Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	swboyd@chromium.org, rojay@codeaurora.org, stephan@gerhold.net
Subject: Re: [PATCH v6 1/2] PM / Domains: Add support for 'required-opps' to set default perf state
Date: Tue, 10 Aug 2021 01:44:13 +0300	[thread overview]
Message-ID: <c43ddc6b-32ca-433d-76f2-901cb594eaf1@gmail.com> (raw)
In-Reply-To: <f58e631d-67a7-4981-ce59-6a4772b44564@gmail.com>

10.08.2021 01:26, Dmitry Osipenko пишет:
> 04.08.2021 13:58, Rajendra Nayak пишет:
>> @@ -2637,6 +2643,8 @@ static int __genpd_dev_pm_attach(struct device *dev, struct device *base_dev,
>>  {
>>  	struct of_phandle_args pd_args;
>>  	struct generic_pm_domain *pd;
>> +	struct device_node *np;
>> +	int pstate;
>>  	int ret;
>>  
>>  	ret = of_parse_phandle_with_args(dev->of_node, "power-domains",
>> @@ -2675,10 +2683,26 @@ static int __genpd_dev_pm_attach(struct device *dev, struct device *base_dev,
>>  		genpd_unlock(pd);
>>  	}
>>  
>> -	if (ret)
>> +	if (ret) {
>>  		genpd_remove_device(pd, dev);
>> +		return -EPROBE_DEFER;
>> +	}
>> +
>> +	/* Set the default performance state */
>> +	np = dev->of_node;
>> +	if (of_parse_phandle(np, "required-opps", index)) {
>> +		pstate = of_get_required_opp_performance_state(np, index);
>> +		if (pstate < 0) {
>> +			ret = pstate;
>> +			dev_err(dev, "failed to set required performance state for power-domain %s: %d\n",
>> +				pd->name, ret);
>> +		} else {
>> +			dev_pm_genpd_set_performance_state(dev, pstate);

Where is error handling?

>> +			dev_gpd_data(dev)->default_pstate = pstate;
>> +		}
>> +	}
> 
> Why performance state is set after genpd_power_on()?
> 


  reply	other threads:[~2021-08-09 22:44 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-04 10:58 [PATCH v6 0/2] " Rajendra Nayak
2021-08-04 10:58 ` [PATCH v6 1/2] " Rajendra Nayak
2021-08-06  9:32   ` Ulf Hansson
2021-08-09 11:08     ` Rajendra Nayak
2021-08-10  2:43       ` Viresh Kumar
2021-08-11 10:00         ` Rajendra Nayak
2021-08-11 10:07           ` Viresh Kumar
2021-08-11 10:52             ` Ulf Hansson
2021-08-11 11:19               ` Viresh Kumar
2021-08-09 22:26   ` Dmitry Osipenko
2021-08-09 22:44     ` Dmitry Osipenko [this message]
2021-08-09 23:46       ` Dmitry Osipenko
2021-08-10  0:37         ` Dmitry Osipenko
2021-08-11  9:45         ` Rajendra Nayak
2021-08-11 19:48           ` Dmitry Osipenko
2021-08-12  2:28             ` Dmitry Osipenko
2021-08-04 10:58 ` [PATCH v6 2/2] arm64: dts: sc7180: Add required-opps for i2c Rajendra Nayak

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