On 01/22/2018 07:29 AM, Bartosz Golaszewski wrote:
2018-01-20 18:13 GMT+01:00 David Lechner <david@xxxxxxxxxxxxxx>:
This series converts mach-davinci to use the common clock framework.
The series works like this, the first 19 patches create new clock drivers
using the common clock framework. There are basically 3 groups of clocks -
PLL, PSC and CFGCHIP (syscon). There are six different SoCs that each have
unique init data, which is the reason for so many patches.
Then, starting with "ARM: da830: add new clock init using common clock",
we get the mach code ready for the switch by adding the code needed for
the new clock drivers and adding #ifndef CONFIG_COMMON_CLK around the
legacy clocks so that we can switch easily between the old and the new.
"ARM: davinci: switch to common clock framework" actually flips the switch
to start using the new clock drivers. Then the next 8 patches remove all
of the old clock code.
The final three patches add device tree clock support to the one SoC that
supports it.
v6 changes (also see individual patches for details):
- All of the device tree bindings are changed
- All of the clock drivers are changed significantly
- Fixed issues brought up during review of v5
- "ARM: davinci: move davinci_clk_init() to init_time" is removed from this
series and submitted separately
v5 changes:
- Basically, this is an entirely new series
- Patches are broken up into bite-sized pieces
- Converted PSC clock driver to use regmap
- Restored "force" flag for certain DA850 clocks
- Added device tree bindings
- Moved more of the clock init to drivers/clk
- Fixed frequency scaling (maybe*)
* I have frequency scaling using cpufreq-dt, so I know the clocks are doing
what they need to do to make this work, but I haven't figured out how to
test davinci-cpufreq driver yet. (Patches to make cpufreq-dt work will be
sent separately after this series has landed.)
This driver doesn't have DT support - I suppose it would be useful to
add it and also add the corresponding DT node to da850.dtsi. If you're
ok with it, I can start working on it. I also have a patch for the i2c
cpufreq issue and it would be nice to test it with it.
Why not just use cpufreq-dt for the DT case? It seems to be working.
I have preliminary patches on GitHub [1][2].
[1]: https://github.com/dlech/ev3dev-kernel/commit/e38897148a949b736ab135983887f9c81375f108
[2]: https://github.com/dlech/ev3dev-kernel/commit/bab85f9e45450a36a7ea6f4407f89a75edb63761
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