Re: [PATCH v6 00/41] ARM: davinci: convert to common clock framework
david at lechnology.com
Mon Jan 22 09:30:15 PST 2018
On 01/22/2018 05:14 AM, Bartosz Golaszewski wrote:
> 2018-01-20 18:13 GMT+01:00 David Lechner <david at lechnology.com>:
>> 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 series applies on top of linux-davinci/master plus the following patches:
>> -  "clk: fix reentrancy of clk_enable() on UP systems" (in clk-next)
>> -  "clk: add helper functions for managing clk_onecell_data"
>> -  "clk: divider: read-only divider can propagate rate change"
>> - ,,,,, series "ARM: davinci: common clock prep work"
> Hi David,
> I'm getting a splat when trying to mount the rootfs over nfs on a da850-lcdk.
> I'll try to figure out what's happening.
> Best regards,
> Bartosz Golaszewski
>  https://pastebin.com/D94z8SAe
Could it have something to do with the "rmii" clock? I don't think I added that
in the device tree.
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