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Subject: Re: [PATCH v6 00/19] Move PMC clocks into Tegra PMC driver
To:     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, spujar@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
References: <1578370458-3686-1-git-send-email-skomatineni@nvidia.com>
 <4f52bc6e-3e97-f5fb-ce20-be7b55e688ee@gmail.com>
 <d0447620-48bb-ab2a-1f5f-f8a62aa736f7@nvidia.com>
 <1e603a95-fb6b-1b8a-a0c2-9b47666da79a@gmail.com>
 <d70a2735-ee51-be91-b930-27fa0d3b5475@nvidia.com>
From:   Dmitry Osipenko <digetx@gmail.com>
Message-ID: <08c6bae7-c388-d651-6138-536d914b6a75@gmail.com>
Date:   Wed, 8 Jan 2020 04:01:12 +0300
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08.01.2020 03:02, Sowjanya Komatineni пишет:
> 
> On 1/7/20 3:28 PM, Dmitry Osipenko wrote:
>> 08.01.2020 02:24, Sowjanya Komatineni пишет:
>>> On 1/7/20 3:01 PM, Dmitry Osipenko wrote:
>>>> Hello Sowjanya,
>>>>
>>>> 07.01.2020 07:13, Sowjanya Komatineni пишет:
>>>>> This patch series moves Tegra PMC clocks from clock driver to pmc
>>>>> driver
>>>>> along with the device trees changes and audio driver which uses one of
>>>>> the pmc clock for audio mclk.
>>>>>
>>>>> Tegra PMC has clk_out_1, clk_out_2, clk_out_3 and blink controls which
>>>>> are currently registered by Tegra clock driver using
>>>>> clk_regiser_mux and
>>>>> clk_register_gate which performs direct Tegra PMC register access.
>>>>>
>>>>> When Tegra PMC is in secure mode, any access from non-secure world
>>>>> will
>>>>> not go through.
>>>>>
>>>>> This patch series adds these Tegra PMC clocks and blink controls to
>>>>> Tegra
>>>>> PMC driver with PMC as clock provider and removes them from Tegra
>>>>> clock
>>>>> driver.
>>>>>
>>>>> PMC clock clk_out_1 is dedicated for audio mclk from Tegra30 thru
>>>>> Tegra210
>>>>> and clock driver does inital parent configuration for it and enables
>>>>> them.
>>>>> But this clock should be taken care by audio driver as there is no
>>>>> need
>>>>> to have this clock pre enabled.
>>>>>
>>>>> So, this series also includes patch that updates ASoC driver to take
>>>>> care of parent configuration for mclk if device tree don't specify
>>>>> initial parent configuration using assigned-clock-parents and controls
>>>>> audio mclk enable/disable during ASoC machine startup and shutdown.
>>>>>
>>>>> DTs are also updated to use clk_out_1 as audio mclk rather than
>>>>> extern1.
>>>>>
>>>>> This series also includes a patch for mclk fallback to extern1 when
>>>>> retrieving mclk fails to have this backward compatible of new DT with
>>>>> old kernels.
>>>>>
>>>>> [v6]:    Changes between v5 and v6 are
>>>>>      - v5 feedback
>>>>>      - Added ASoC machine startup and shutdown callbacks to control
>>>>> audio
>>>>>        mclk enable/disable and removed default mclk enable from clock
>>>>> driver.
>>>>>      - Updated tegra_asoc_utils_set_rate to disable mclk only
>>>>> during PLLA
>>>>>        rate change and removed disabling PLLA as its already taken
>>>>> care by
>>>>>        pll clock driver.
>>>>>      - Removed tegra_asoc_utils_set_rate call from utils_init as
>>>>> set_rate
>>>>>        is set during machine hw_params and during utils_init mclk is
>>>>>        already in disabled state and this causes warning during mclk
>>>>> disable
>>>>>        in utils_set_rate.
>>>>>
>>>>> [v5]:    Changes between v4 and v5 are
>>>>>      - v4 feedback
>>>>>      - updated dt-binding pmc YAML schema with more description on
>>>>> power
>>>>>        gate nodes and pad configuration state nodes.
>>>>>      - update tegra_asoc_utils_set_rate to disable audio mclk only if
>>>>>        its in enable state.
>>>>>
>>>>> [v4]:    Changes between v3 and v4 are
>>>>>      - v3 Feedback
>>>>>      - Updated clocks clk_m_div2 and clk_m_div4 as osc_div2 and
>>>>> osc_div4.
>>>>>        Tegra don't have clk_m_div2, clk_m_div4 and they should
>>>>> actually
>>>>>        be osc_div2 and osc_div4 clocks from osc pads.
>>>>>      - Fixed PMC clock parents to use osc, osc_div2, osc_div4.
>>>>>      - Register each PMC clock as single clock rather than separate
>>>>>        mux and gate clocks.
>>>>>      - Update ASoC utils to use resource managed APIs rather than
>>>>>        using clk_get and clk_put.
>>>>>      - Updated device tree and ASoC driver to use clk_out_1 instead of
>>>>>        clk_out_1_mux as PMC clocks are registered as single clock.
>>>>>      - Update clock driver init_table to not enable audio related
>>>>> clocks
>>>>>        as ASoC utils will do audio clock enables.
>>>>>
>>>>> [v3]:    Changes between v2 and v3 are
>>>>>      - Removes set parent of clk_out_1_mux to extern1 and enabling
>>>>>        extern1 from the clock driver.
>>>>>      - Doesn't enable clk_out_1 and blink by default in pmc driver
>>>>>      - Updates ASoC driver to take care of audio mclk parent
>>>>>        configuration incase if device tree don't specify assigned
>>>>>        clock parent properties and enables mclk using both clk_out_1
>>>>>        and extern1.
>>>>>      - updates all device trees using extern1 as mclk in sound node
>>>>>        to use clk_out_1 from pmc.
>>>>>      - patch for YAML format pmc dt-binding
>>>>>      - Includes v2 feedback
>>>>>
>>>>> [v2]:    Changes between v1 and v2 are
>>>>>      - v2 includes patches for adding clk_out_1, clk_out_2, clk_out_3,
>>>>>        blink controls to Tegra PMC driver and removing clk-tegra-pmc.
>>>>>      - feedback related to pmc clocks in Tegra PMC driver from v1
>>>>>      - Removed patches for WB0 PLLM overrides and PLLE IDDQ PMC
>>>>> programming
>>>>>        by the clock driver using helper functions from Tegra PMC.
>>>>>
>>>>>          Note:
>>>>>        To use helper functions from PMC driver, PMC early init need to
>>>>>        happen prior to using helper functions and these helper
>>>>> functions are
>>>>>        for PLLM Override and PLLE IDDQ programming in PMC during
>>>>> PLLM/PLLE
>>>>>        clock registration which happen in clock_init prior to Tegra
>>>>> PMC
>>>>>        probe.
>>>>>        Moving PLLM/PLLE clocks registration to happen after Tegra PMC
>>>>>        impacts other clocks EMC, MC and corresponding
>>>>> tegra_emc_init and
>>>>>        tegra_mc_init.
>>>>>        This implementation of configuring PMC registers thru helper
>>>>>        functions in clock driver needs proper changes across PMC,
>>>>> Clock,
>>>>>        EMC and MC inits to have it work across all Tegra platforms.
>>>>>
>>>>>        Currently PLLM Override is not enabled in the bootloader so
>>>>> proper
>>>>>        patches for this fix will be taken care separately.
>>>>>
>>>>> [v1]:    v1 includes patches for below fixes.
>>>>>      - adding clk_out_1, clk_out_2, clk_out_3, blink controls to Tegra
>>>>> PMC
>>>>>        driver and removing clk-tegra-pmc.
>>>>>      - updated clock provider from tegra_car to pmc in the device tree
>>>>>        tegra210-smaug.dts that uses clk_out_2.
>>>>>      - Added helper functions in PMC driver for WB0 PLLM overrides and
>>>>> PLLE
>>>>>        IDDQ programming to use by clock driver and updated clock
>>>>> driver to
>>>>>        use these helper functions and removed direct PMC access from
>>>>> clock
>>>>>        driver and all pmc base address references in clock driver.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Sowjanya Komatineni (19):
>>>>>     dt-bindings: clock: tegra: Change CLK_M_DIV to OSC_DIV clocks
>>>>>     clk: tegra: Change CLK_M_DIV clocks to OSC_DIV clocks
>>>>>     clk: tegra: Fix Tegra PMC clock out parents
>>>>>     dt-bindings: tegra: Convert Tegra PMC bindings to YAML
>>>>>     dt-bindings: soc: tegra-pmc: Add Tegra PMC clock bindings
>>>>>     soc: tegra: Add Tegra PMC clocks registration into PMC driver
>>>>>     dt-bindings: soc: tegra-pmc: Add id for Tegra PMC 32KHz blink
>>>>> clock
>>>>>     soc: tegra: Add support for 32KHz blink clock
>>>>>     clk: tegra: Remove tegra_pmc_clk_init along with clk ids
>>>>>     dt-bindings: clock: tegra: Remove pmc clock ids from clock
>>>>> dt-bindings
>>>>>     ASoC: tegra: Use device managed resource APIs to get the clock
>>>>>     ASoC: tegra: Add audio mclk configuration
>>>>>     ASoC: tegra: Add fallback implementation for audio mclk
>>>>>     clk: tegra: Remove audio related clock enables from init_table
>>>>>     ARM: dts: tegra: Add clock-cells property to pmc
>>>>>     arm64: tegra: Add clock-cells property to Tegra PMC node
>>>>>     ARM: tegra: Update sound node clocks in device tree
>>>>>     arm64: tegra: smaug: Change clk_out_2 provider to pmc
>>>>>     ASoC: nau8825: change Tegra clk_out_2 provider from tegra_car
>>>>> to pmc
>>>>>
>>>>>    .../bindings/arm/tegra/nvidia,tegra20-pmc.txt      | 300
>>>>> -----------------
>>>>>    .../bindings/arm/tegra/nvidia,tegra20-pmc.yaml     | 354
>>>>> +++++++++++++++++++++
>>>>>    .../devicetree/bindings/sound/nau8825.txt          |   2 +-
>>>>>    arch/arm/boot/dts/tegra114-dalmore.dts             |   8 +-
>>>>>    arch/arm/boot/dts/tegra114.dtsi                    |   4 +-
>>>>>    arch/arm/boot/dts/tegra124-apalis-v1.2.dtsi        |   8 +-
>>>>>    arch/arm/boot/dts/tegra124-apalis.dtsi             |   8 +-
>>>>>    arch/arm/boot/dts/tegra124-jetson-tk1.dts          |   8 +-
>>>>>    arch/arm/boot/dts/tegra124-nyan.dtsi               |   8 +-
>>>>>    arch/arm/boot/dts/tegra124-venice2.dts             |   8 +-
>>>>>    arch/arm/boot/dts/tegra124.dtsi                    |   4 +-
>>>>>    arch/arm/boot/dts/tegra20.dtsi                     |   4 +-
>>>>>    arch/arm/boot/dts/tegra30-apalis-v1.1.dtsi         |   8 +-
>>>>>    arch/arm/boot/dts/tegra30-apalis.dtsi              |   8 +-
>>>>>    arch/arm/boot/dts/tegra30-beaver.dts               |   8 +-
>>>>>    arch/arm/boot/dts/tegra30-cardhu.dtsi              |   8 +-
>>>>>    arch/arm/boot/dts/tegra30-colibri.dtsi             |   8 +-
>>>>>    arch/arm/boot/dts/tegra30.dtsi                     |   4 +-
>>>>>    arch/arm64/boot/dts/nvidia/tegra132.dtsi           |   4 +-
>>>>>    arch/arm64/boot/dts/nvidia/tegra210-smaug.dts      |   2 +-
>>>>>    arch/arm64/boot/dts/nvidia/tegra210.dtsi           |   6 +-
>>>>>    drivers/clk/tegra/Makefile                         |   1 -
>>>>>    drivers/clk/tegra/clk-id.h                         |  11 +-
>>>>>    drivers/clk/tegra/clk-tegra-fixed.c                |  32 +-
>>>>>    drivers/clk/tegra/clk-tegra-pmc.c                  | 122 -------
>>>>>    drivers/clk/tegra/clk-tegra114.c                   |  41 +--
>>>>>    drivers/clk/tegra/clk-tegra124.c                   |  46 +--
>>>>>    drivers/clk/tegra/clk-tegra20.c                    |   9 +-
>>>>>    drivers/clk/tegra/clk-tegra210.c                   |  30 +-
>>>>>    drivers/clk/tegra/clk-tegra30.c                    |  31 +-
>>>>>    drivers/clk/tegra/clk.h                            |   1 -
>>>>>    drivers/soc/tegra/pmc.c                            | 352
>>>>> ++++++++++++++++++++
>>>>>    include/dt-bindings/clock/tegra114-car.h           |  18 +-
>>>>>    include/dt-bindings/clock/tegra124-car-common.h    |  18 +-
>>>>>    include/dt-bindings/clock/tegra20-car.h            |   2 +-
>>>>>    include/dt-bindings/clock/tegra210-car.h           |  18 +-
>>>>>    include/dt-bindings/clock/tegra30-car.h            |  18 +-
>>>>>    include/dt-bindings/soc/tegra-pmc.h                |  16 +
>>>>>    sound/soc/tegra/tegra_alc5632.c                    |  28 +-
>>>>>    sound/soc/tegra/tegra_asoc_utils.c                 | 125 ++++----
>>>>>    sound/soc/tegra/tegra_asoc_utils.h                 |   3 +-
>>>>>    sound/soc/tegra/tegra_max98090.c                   |  43 ++-
>>>>>    sound/soc/tegra/tegra_rt5640.c                     |  43 ++-
>>>>>    sound/soc/tegra/tegra_rt5677.c                     |  28 +-
>>>>>    sound/soc/tegra/tegra_sgtl5000.c                   |  28 +-
>>>>>    sound/soc/tegra/tegra_wm8753.c                     |  43 ++-
>>>>>    sound/soc/tegra/tegra_wm8903.c                     |  43 ++-
>>>>>    sound/soc/tegra/tegra_wm9712.c                     |   8 +-
>>>>>    sound/soc/tegra/trimslice.c                        |  39 ++-
>>>>>    49 files changed, 1192 insertions(+), 777 deletions(-)
>>>>>    delete mode 100644
>>>>> Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.txt
>>>>>    create mode 100644
>>>>> Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.yaml
>>>>>    delete mode 100644 drivers/clk/tegra/clk-tegra-pmc.c
>>>>>    create mode 100644 include/dt-bindings/soc/tegra-pmc.h
>>>>>
>>>> I briefly looked through the patches and tested them in all possible
>>>> configurations. For now everything looks and works well.
>>>>
>>>> You could add this to all patches:
>>>>
>>>> Tested-by: Dmitry Osipenko <digetx@gmail.com>
>>>> Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
>>> Thanks Dmitry
>> Actually, it will be more accurate if you will add my t-b only to the
>> T20/30 patches. I only looked through the T114+ patches without testing
>> them, thanks.
> 
> Most of patches has changes to t20 through t210.
> 
> Just to be clear, do you meant to add Tested-by to patches 6, 8, 11, 12,
> 13 and Reviewed-by tag to all patches?
> 

You could add t-b to the patches 1-15 (I ran dtbs_check), 17. The r-b is
for all patches.