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Date: Fri, 1 Jul 2022 13:50:16 +0530 From: Viresh Kumar <viresh.kumar@...aro.org> To: Thierry Reding <thierry.reding@...il.com>, Jonathan Hunter <jonathanh@...dia.com> Cc: Viresh Kumar <viresh.kumar@...aro.org>, linux-pm@...r.kernel.org, Vincent Guittot <vincent.guittot@...aro.org>, "Rafael J. Wysocki" <rafael@...nel.org>, Stephen Boyd <sboyd@...nel.org>, Nishanth Menon <nm@...com>, Dmitry Osipenko <dmitry.osipenko@...labora.com>, linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH V2 21/30] soc/tegra: Add comment over devm_pm_opp_set_clkname() Explain why special handling was required here, it isn't obvious at all. Tested-by: Dmitry Osipenko <dmitry.osipenko@...labora.com> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org> --- drivers/soc/tegra/common.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/soc/tegra/common.c b/drivers/soc/tegra/common.c index 32c346b72635..9f3fdeb1a11c 100644 --- a/drivers/soc/tegra/common.c +++ b/drivers/soc/tegra/common.c @@ -108,6 +108,13 @@ int devm_tegra_core_dev_init_opp_table(struct device *dev, u32 hw_version; int err; + /* + * For some devices we don't have any OPP table in the DT, and in order + * to use the same code path for all the devices, we create a dummy OPP + * table for them via this call. The dummy OPP table is only capable of + * doing clk_set_rate() on invocation of dev_pm_opp_set_rate() and + * doesn't provide any other functionality. + */ err = devm_pm_opp_set_clkname(dev, NULL); if (err) { dev_err(dev, "failed to set OPP clk: %d\n", err); -- 2.31.1.272.g89b43f80a514
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