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Date: Thu, 23 Jun 2022 22:15:21 +0100 From: Jon Hunter <jonathanh@...dia.com> To: Viresh Kumar <viresh.kumar@...aro.org>, Thierry Reding <thierry.reding@...il.com> Cc: linux-pm@...r.kernel.org, Vincent Guittot <vincent.guittot@...aro.org>, Rafael Wysocki <rjw@...ysocki.net>, Stephen Boyd <sboyd@...nel.org>, Nishanth Menon <nm@...com>, Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, Dmitry Osipenko <digetx@...il.com>, linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH 21/31] soc/tegra: Remove the call to devm_pm_opp_set_clkname() Hi Viresh, On 26/05/2022 12:42, Viresh Kumar wrote: > The OPP core already performs devm_pm_opp_set_clkname() with name as > NULL, the callers shouldn't be doing the same unless they have a > different clock name to add here. > > Drop the call. > > Cc: Dmitry Osipenko <digetx@...il.com> > Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org> > --- > drivers/soc/tegra/common.c | 6 ------ > 1 file changed, 6 deletions(-) > > diff --git a/drivers/soc/tegra/common.c b/drivers/soc/tegra/common.c > index 32c346b72635..49a5360f4507 100644 > --- a/drivers/soc/tegra/common.c > +++ b/drivers/soc/tegra/common.c > @@ -108,12 +108,6 @@ int devm_tegra_core_dev_init_opp_table(struct device *dev, > u32 hw_version; > int err; > > - err = devm_pm_opp_set_clkname(dev, NULL); > - if (err) { > - dev_err(dev, "failed to set OPP clk: %d\n", err); > - return err; > - } > - > /* Tegra114+ doesn't support OPP yet */ > if (!of_machine_is_compatible("nvidia,tegra20") && > !of_machine_is_compatible("nvidia,tegra30")) This appears to be breaking a few Tegra drivers. For example, on Tegra210 Jetson TX1 I am seeing the following and the eMMC is no longer working ... [ 0.526729] sdhci-tegra 700b0600.mmc: dev_pm_opp_set_rate: device's opp table doesn't exist [ 0.526733] sdhci-tegra 700b0600.mmc: failed to set clk rate to 400000Hz: -19 [ 0.528830] sdhci-tegra 700b0600.mmc: dev_pm_opp_set_rate: device's opp table doesn't exist [ 0.528833] sdhci-tegra 700b0600.mmc: failed to set clk rate to 400000Hz: -19 I have seen another instance of this on Jetson Xavier NX ... [ 12.301336] tegra-pwm 32d0000.pwm: dev_pm_opp_set_rate: device's opp table doesn't exist [ 12.301350] tegra-pwm 32d0000.pwm: Failed to set max frequency: -19 Bisect is point to this commit and so something is not working as expected. Cheers Jon -- nvpublic
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