From: Sameer Pujar <spujar@nvidia.com>
To: Dmitry Osipenko <digetx@gmail.com>,
Sowjanya Komatineni <skomatineni@nvidia.com>,
<thierry.reding@gmail.com>, <jonathanh@nvidia.com>,
<broonie@kernel.org>, <lgirdwood@gmail.com>, <perex@perex.cz>,
<tiwai@suse.com>, <mperttunen@nvidia.com>,
<gregkh@linuxfoundation.org>, <sboyd@kernel.org>,
<robh+dt@kernel.org>, <mark.rutland@arm.com>
Cc: <pdeschrijver@nvidia.com>, <pgaikwad@nvidia.com>,
<josephl@nvidia.com>, <daniel.lezcano@linaro.org>,
<mmaddireddy@nvidia.com>, <markz@nvidia.com>,
<devicetree@vger.kernel.org>, <linux-clk@vger.kernel.org>,
<linux-tegra@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v8 19/22] ASoC: tegra: Enable audio mclk during tegra_asoc_utils_init
Date: Mon, 20 Jan 2020 09:40:24 +0530 [thread overview]
Message-ID: <64027c16-763b-350f-9975-4f9727450ae9@nvidia.com> (raw)
In-Reply-To: <3a8e609a-58aa-d2c1-c140-e1f0127dd53b@gmail.com>
On 1/19/2020 8:44 PM, Dmitry Osipenko wrote:
> External email: Use caution opening links or attachments
>
>
> 14.01.2020 10:24, Sowjanya Komatineni пишет:
>> Tegra PMC clock clk_out_1 is dedicated for audio mclk from Tegra30
>> through Tegra210 and currently Tegra clock driver keeps the audio
>> mclk enabled.
>>
>> With the move of PMC clocks from clock driver into pmc driver,
>> audio mclk enable from clock driver is removed and this should be
>> taken care by the audio driver.
>>
>> tegra_asoc_utils_init calls tegra_asoc_utils_set_rate and audio mclk
>> rate configuration is not needed during init and set_rate is actually
>> done during hw_params callback.
>>
>> So, this patch removes tegra_asoc_utils_set_rate call and just leaves
>> the audio mclk enabled.
>>
>> Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
>> ---
>> sound/soc/tegra/tegra_asoc_utils.c | 11 +++++++++--
>> 1 file changed, 9 insertions(+), 2 deletions(-)
>>
>> diff --git a/sound/soc/tegra/tegra_asoc_utils.c b/sound/soc/tegra/tegra_asoc_utils.c
>> index 1dce5ad6e665..99584970f5f4 100644
>> --- a/sound/soc/tegra/tegra_asoc_utils.c
>> +++ b/sound/soc/tegra/tegra_asoc_utils.c
>> @@ -216,9 +216,16 @@ int tegra_asoc_utils_init(struct tegra_asoc_utils_data *data,
>> data->clk_cdev1 = clk_out_1;
>> }
>>
>> - ret = tegra_asoc_utils_set_rate(data, 44100, 256 * 44100);
>> - if (ret)
>> + /*
>> + * FIXME: There is some unknown dependency between audio mclk disable
>> + * and suspend-resume functionality on Tegra30, although audio mclk is
>> + * only needed for audio.
>> + */
>> + ret = clk_prepare_enable(data->clk_cdev1);
>> + if (ret) {
>> + dev_err(data->dev, "Can't enable cdev1: %d\n", ret);
>> return ret;
>> + }
>>
>> return 0;
>> }
>>
> Shouldn't the clock be disabled on driver's removal?
I am not sure if we really need to do in this series as it does not
change the behavior from what was there earlier. Also there is already a
FIXME item here and we end up adding clock disable in remove() path of
multiple drivers, which is going to be removed once we address FIXME.
next prev parent reply other threads:[~2020-01-20 4:10 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-14 7:24 [PATCH v8 00/22] Move PMC clocks into Tegra PMC driver Sowjanya Komatineni
2020-01-14 7:24 ` [PATCH v8 01/22] dt-bindings: clock: tegra: Add IDs for OSC clocks Sowjanya Komatineni
2020-01-14 7:24 ` [PATCH v8 02/22] clk: tegra: Add support for OSC_DIV fixed clocks Sowjanya Komatineni
2020-01-14 7:24 ` [PATCH v8 03/22] clk: tegra: Add Tegra OSC to clock lookup Sowjanya Komatineni
2020-01-14 7:24 ` [PATCH v8 04/22] clk: tegra: Fix Tegra PMC clock out parents Sowjanya Komatineni
2020-01-14 7:24 ` [PATCH v8 05/22] clk: tegra: Remove CLK_M_DIV fixed clocks Sowjanya Komatineni
2020-01-14 7:24 ` [PATCH v8 06/22] dt-bindings: tegra: Convert Tegra PMC bindings to YAML Sowjanya Komatineni
2020-01-14 7:24 ` [PATCH v8 07/22] dt-bindings: soc: tegra-pmc: Add Tegra PMC clock bindings Sowjanya Komatineni
2020-01-14 7:24 ` [PATCH v8 08/22] soc: tegra: Add Tegra PMC clocks registration into PMC driver Sowjanya Komatineni
2020-01-14 7:24 ` [PATCH v8 09/22] dt-bindings: soc: tegra-pmc: Add id for Tegra PMC 32KHz blink clock Sowjanya Komatineni
2020-01-14 7:24 ` [PATCH v8 10/22] soc: tegra: Add support for " Sowjanya Komatineni
2020-01-14 7:24 ` [PATCH v8 11/22] ASoC: tegra: Add fallback implementation for audio mclk Sowjanya Komatineni
2020-01-19 15:08 ` Dmitry Osipenko
2020-01-23 23:56 ` Dmitry Osipenko
2020-02-17 9:29 ` Thierry Reding
2020-02-17 9:40 ` Thierry Reding
2020-02-17 14:51 ` Dmitry Osipenko
2020-01-14 7:24 ` [PATCH v8 12/22] ASoC: tegra: Use device managed resource APIs to get the clock Sowjanya Komatineni
2020-02-17 9:48 ` Thierry Reding
2020-01-14 7:24 ` [PATCH v8 13/22] ARM: dts: tegra: Add clock-cells property to pmc Sowjanya Komatineni
2020-01-14 7:24 ` [PATCH v8 14/22] arm64: tegra: Add clock-cells property to Tegra PMC node Sowjanya Komatineni
2020-01-14 7:24 ` [PATCH v8 15/22] ARM: tegra: Update sound node clocks in device tree Sowjanya Komatineni
2020-01-14 7:24 ` [PATCH v8 16/22] arm64: tegra: smaug: Change clk_out_2 provider to pmc Sowjanya Komatineni
2020-01-14 7:24 ` [PATCH v8 17/22] ASoC: nau8825: change Tegra clk_out_2 provider to tegra_pmc Sowjanya Komatineni
2020-02-17 9:52 ` Thierry Reding
2020-01-14 7:24 ` [PATCH v8 18/22] ASoC: tegra: Add audio mclk parent configuration Sowjanya Komatineni
2020-02-17 9:53 ` Thierry Reding
2020-01-14 7:24 ` [PATCH v8 19/22] ASoC: tegra: Enable audio mclk during tegra_asoc_utils_init Sowjanya Komatineni
2020-01-19 15:14 ` Dmitry Osipenko
2020-01-20 4:10 ` Sameer Pujar [this message]
2020-01-20 15:32 ` Dmitry Osipenko
2020-02-17 9:53 ` Thierry Reding
2020-01-14 7:24 ` [PATCH v8 20/22] clk: tegra: Remove tegra_pmc_clk_init along with clk ids Sowjanya Komatineni
2020-02-17 9:55 ` Thierry Reding
2020-01-14 7:24 ` [PATCH v8 21/22] dt-bindings: clock: tegra: Remove pmc clock ids from clock dt-bindings Sowjanya Komatineni
2020-01-14 7:24 ` [PATCH v8 22/22] clk: tegra: Remove audio clocks configuration from clock driver Sowjanya Komatineni
2020-01-19 15:04 ` Dmitry Osipenko
2020-01-21 16:19 ` Sowjanya Komatineni
2020-01-21 16:57 ` Dmitry Osipenko
2020-01-24 4:34 ` Dmitry Osipenko
2020-01-24 8:50 ` Ben Dooks
2020-02-17 9:59 ` [PATCH v8 00/22] Move PMC clocks into Tegra PMC driver Thierry Reding
2020-03-04 19:26 ` Dmitry Osipenko
2020-03-04 21:22 ` Dmitry Osipenko
2020-03-25 21:27 ` Thierry Reding
2020-03-27 15:45 ` Mark Brown
2020-04-21 13:52 ` Jon Hunter
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