From: Dmitry Osipenko <digetx@gmail.com>
To: Sowjanya Komatineni <skomatineni@nvidia.com>,
thierry.reding@gmail.com, jonathanh@nvidia.com,
tglx@linutronix.de, jason@lakedaemon.net, marc.zyngier@arm.com,
linus.walleij@linaro.org, stefan@agner.ch, mark.rutland@arm.com
Cc: pdeschrijver@nvidia.com, pgaikwad@nvidia.com, sboyd@kernel.org,
linux-clk@vger.kernel.org, linux-gpio@vger.kernel.org,
jckuo@nvidia.com, josephl@nvidia.com, talho@nvidia.com,
linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org,
mperttunen@nvidia.com, spatra@nvidia.com, robh+dt@kernel.org,
devicetree@vger.kernel.org, rjw@rjwysocki.net,
viresh.kumar@linaro.org, linux-pm@vger.kernel.org
Subject: Re: [PATCH v8 05/21] clk: tegra: pll: Save and restore pll context
Date: Fri, 9 Aug 2019 14:33:18 +0300 [thread overview]
Message-ID: <68f65db6-44b7-1c75-2633-4a2fffd62a92@gmail.com> (raw)
In-Reply-To: <1565308020-31952-6-git-send-email-skomatineni@nvidia.com>
09.08.2019 2:46, Sowjanya Komatineni пишет:
> This patch implements save and restore of PLL context.
>
> During system suspend, core power goes off and looses the settings
> of the Tegra CAR controller registers.
>
> So during suspend entry pll context is stored and on resume it is
> restored back along with its state.
>
> Acked-by: Thierry Reding <treding@nvidia.com>
> Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
> ---
> drivers/clk/tegra/clk-pll.c | 88 ++++++++++++++++++++++++++++-----------------
> drivers/clk/tegra/clk.h | 2 ++
> 2 files changed, 58 insertions(+), 32 deletions(-)
>
> diff --git a/drivers/clk/tegra/clk-pll.c b/drivers/clk/tegra/clk-pll.c
> index 1583f5fc992f..e52add2bbdbb 100644
> --- a/drivers/clk/tegra/clk-pll.c
> +++ b/drivers/clk/tegra/clk-pll.c
> @@ -1008,6 +1008,28 @@ static unsigned long clk_plle_recalc_rate(struct clk_hw *hw,
> return rate;
> }
>
> +static void tegra_clk_pll_restore_context(struct clk_hw *hw)
> +{
> + struct tegra_clk_pll *pll = to_clk_pll(hw);
> + struct clk_hw *parent = clk_hw_get_parent(hw);
> + unsigned long parent_rate = clk_hw_get_rate(parent);
> + unsigned long rate = clk_hw_get_rate(hw);
> + u32 val;
> +
> + if (clk_pll_is_enabled(hw))
> + return;
> +
> + if (pll->params->set_defaults)
> + pll->params->set_defaults(pll);
> +
> + clk_pll_set_rate(hw, rate, parent_rate);
> +
> + if (!__clk_get_enable_count(hw->clk))
What about orphaned clocks? Is enable_count > 0 for them?
> + clk_pll_disable(hw);
> + else
> + clk_pll_enable(hw);
> +}
[snip]
next prev parent reply other threads:[~2019-08-09 11:33 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-08 23:46 [PATCH v8 00/21] SC7 entry and exit support for Tegra210 Sowjanya Komatineni
2019-08-08 23:46 ` [PATCH v8 01/21] pinctrl: tegra: Fix write barrier placement in pmx_writel Sowjanya Komatineni
2019-08-09 11:38 ` Dmitry Osipenko
2019-08-12 9:20 ` Thierry Reding
2019-08-14 8:32 ` Linus Walleij
2019-08-08 23:46 ` [PATCH v8 02/21] pinctrl: tegra: Add write barrier after all pinctrl register writes Sowjanya Komatineni
2019-08-09 11:39 ` Dmitry Osipenko
2019-08-12 9:20 ` Thierry Reding
2019-08-14 8:33 ` Linus Walleij
2019-08-08 23:46 ` [PATCH v8 03/21] clk: tegra: divider: Save and restore divider rate Sowjanya Komatineni
2019-08-12 9:21 ` Thierry Reding
2019-08-08 23:46 ` [PATCH v8 04/21] clk: tegra: pllout: Save and restore pllout context Sowjanya Komatineni
2019-08-11 18:04 ` Dmitry Osipenko
2019-08-08 23:46 ` [PATCH v8 05/21] clk: tegra: pll: Save and restore pll context Sowjanya Komatineni
2019-08-09 11:33 ` Dmitry Osipenko [this message]
2019-08-09 17:39 ` Sowjanya Komatineni
2019-08-09 17:50 ` Dmitry Osipenko
2019-08-09 18:50 ` Sowjanya Komatineni
2019-08-11 17:24 ` Dmitry Osipenko
2019-08-09 12:46 ` Dmitry Osipenko
2019-08-08 23:46 ` [PATCH v8 06/21] clk: tegra: Support for OSC context save and restore Sowjanya Komatineni
2019-08-08 23:46 ` [PATCH v8 07/21] clk: Add API to get index of the clock parent Sowjanya Komatineni
2019-08-09 11:49 ` Dmitry Osipenko
2019-08-12 9:47 ` Thierry Reding
2019-08-08 23:46 ` [PATCH v8 08/21] clk: tegra: periph: Add restore_context support Sowjanya Komatineni
2019-08-09 11:55 ` Dmitry Osipenko
2019-08-09 12:20 ` Dmitry Osipenko
2019-08-09 16:55 ` Sowjanya Komatineni
2019-08-12 9:50 ` Thierry Reding
2019-08-08 23:46 ` [PATCH v8 09/21] clk: tegra: clk-super: Fix to enable PLLP branches to CPU Sowjanya Komatineni
2019-08-09 12:11 ` Dmitry Osipenko
2019-08-12 9:53 ` Thierry Reding
2019-08-08 23:46 ` [PATCH v8 10/21] clk: tegra: clk-super: Add restore-context support Sowjanya Komatineni
2019-08-09 12:17 ` Dmitry Osipenko
2019-08-09 17:08 ` Sowjanya Komatineni
2019-08-11 17:29 ` Dmitry Osipenko
2019-08-12 9:55 ` Thierry Reding
2019-08-08 23:46 ` [PATCH v8 11/21] clk: tegra: clk-dfll: Add suspend and resume support Sowjanya Komatineni
2019-08-09 12:23 ` Dmitry Osipenko
2019-08-09 16:39 ` Sowjanya Komatineni
2019-08-09 18:00 ` Dmitry Osipenko
2019-08-09 18:33 ` Sowjanya Komatineni
2019-08-09 18:52 ` Dmitry Osipenko
2019-08-12 10:01 ` Thierry Reding
2019-08-08 23:46 ` [PATCH v8 12/21] cpufreq: tegra124: " Sowjanya Komatineni
2019-08-12 10:07 ` Thierry Reding
2019-08-08 23:46 ` [PATCH v8 13/21] clk: tegra210: Use fence_udelay during PLLU init Sowjanya Komatineni
2019-08-11 18:02 ` Dmitry Osipenko
2019-08-11 19:16 ` Sowjanya Komatineni
2019-08-08 23:46 ` [PATCH v8 14/21] clk: tegra210: Add suspend and resume support Sowjanya Komatineni
2019-08-09 13:56 ` Dmitry Osipenko
2019-08-09 16:19 ` Sowjanya Komatineni
2019-08-09 18:18 ` Dmitry Osipenko
[not found] ` <cbe94f84-a17b-7e1a-811d-89db571784e1@nvidia.com>
2019-08-11 17:39 ` Dmitry Osipenko
2019-08-11 19:15 ` Sowjanya Komatineni
2019-08-12 16:25 ` Dmitry Osipenko
2019-08-12 17:28 ` Sowjanya Komatineni
2019-08-12 18:19 ` Dmitry Osipenko
2019-08-12 19:03 ` Sowjanya Komatineni
2019-08-12 20:28 ` Dmitry Osipenko
2019-08-12 10:17 ` Thierry Reding
2019-08-08 23:46 ` [PATCH v8 15/21] soc/tegra: pmc: Allow to support more tegras wake Sowjanya Komatineni
2019-08-11 17:52 ` Dmitry Osipenko
2019-08-08 23:46 ` [PATCH v8 16/21] soc/tegra: pmc: Add pmc wake support for tegra210 Sowjanya Komatineni
2019-08-09 13:28 ` Dmitry Osipenko
2019-08-08 23:46 ` [PATCH v8 17/21] arm64: tegra: Enable wake from deep sleep on RTC alarm Sowjanya Komatineni
2019-08-08 23:46 ` [PATCH v8 18/21] soc/tegra: pmc: Configure core power request polarity Sowjanya Komatineni
2019-08-09 13:13 ` Dmitry Osipenko
2019-08-08 23:46 ` [PATCH v8 19/21] soc/tegra: pmc: Configure deep sleep control settings Sowjanya Komatineni
2019-08-09 13:23 ` Dmitry Osipenko
2019-08-09 16:23 ` Sowjanya Komatineni
2019-08-09 17:24 ` Sowjanya Komatineni
2019-08-09 18:22 ` Dmitry Osipenko
2019-08-08 23:46 ` [PATCH v8 20/21] arm64: dts: tegra210-p2180: Jetson TX1 SC7 timings Sowjanya Komatineni
2019-08-08 23:47 ` [PATCH v8 21/21] arm64: dts: tegra210-p3450: Jetson Nano " Sowjanya Komatineni
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