Message-ID: <dfda896d-27f3-7185-146e-4f697d823471@gmail.com>
Date:   Sat, 7 Dec 2019 17:26:15 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Sowjanya Komatineni <skomatineni@...dia.com>
Cc:     thierry.reding@...il.com, jonathanh@...dia.com,
        mperttunen@...dia.com, gregkh@...uxfoundation.org,
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        devicetree@...r.kernel.org, linux-clk@...r.kernel.org,
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Subject: Re: [PATCH v3 00/15] Move PMC clocks into Tegra PMC driver

06.12.2019 05:48, Sowjanya Komatineni пишет:
> 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 removed them from Tegra clock
> driver. This also adds PMC specific clock id's to use in device tree and
> removed clock ids of PMC clock from Tegra clock driver.
> 
> clk_out_1 is dedicated for audio mclk and current ASoC driver does not
> setting extern1 as parent for clk_out_1 and enabling clk_out_1 and
> currently this is taken care by Tegra clock driver during clock inits
> and there is no need to enable this during clock init.
> 
> So, this series also includes patch that updates ASoC driver to take
> care of configuring parent of mclk and enabling mclk using both extern1
> and clk_out_1 and updates all device trees to use clk_out_1 from pmc as
> mclk incase if device tree don't specify assigned-clock-parents.
> 
> This series also includes a patch for mclk fallback to use extern1
> when retrieving mclk fails with new device tree which uses pmc provider
> to have this backward compatible of new DT with old kernels.
> 
> This series also includes a patch to remove clock ids for these clocks
> from clock dt-binding as these clocks are not used in any of the existing
> device tree except in tegra210-smaug.dts and this series includes a patch
> to update clock provider from tegra_car to pmc in tegra210-smaug.dts for
> clk_out_2.
> 
> [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 (15):
>   dt-bindings: soc: tegra-pmc: Add Tegra PMC clock bindings
>   dt-bindings: tegra: Convert Tegra PMC bindings to YAML
>   soc: tegra: Add Tegra PMC clock registrations into PMC driver
>   dt-bindings: soc: tegra-pmc: Add id for Tegra PMC blink control
>   soc: pmc: Add blink output clock registration to Tegra PMC
>   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: Add audio mclk control through clk_out_1 and extern1
>   ASoC: tegra: Add fallback for audio mclk
>   clk: tegra: Remove extern1 and cdev1 from clocks inittable
>   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

Hello Sowjanya,

Something gone wrong with these patches because I didn't receive them
and don't see them on the ML either.

Also, the list of email correspondents looks a bit too larger. I'm
pretty sure some of the people do not care much about this series. I
tend to use script/get_maintainer.pl and then manually pick the relevant
people for patches.

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