Clock/reset driver

[neuschaefer]

Write a driver for the clock controller, which also handles resets.

The wiki page also needs a bit more substance.

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Current issues

• [x] regression?: a few clocks (such as adcdiv) aren't correctly parented anymore, thus freq=0
  • clk_hw_register_divider_table_parent_data doesn't pass np to __clk_hw_register_divider, but it would be useless anyway, np isn't used there.
  • the pre-platform version of clk-wpcm450 doesn't pass dev to clk_hw_register_divider_table_parent_data etc. because there is not device. That's why fw_name doesn't work.
• [x] validate platform device conversion
  • clk_parent_data::index doesn't work like I expected, at all

[neuschaefer]

Currently under review on the mailing lists.

[StidOfficial]

Did you have a feedback ?

I need it for the mmc0: sdhci@b0007000.

[neuschaefer]

I haven't checked back with the mailing lists in a while, sorry. Not sure when I'll get around to it again

Edit (2024-03-10): I've sent another version of the patchset today

[neuschaefer]

clk_summary output at https://github.com/neuschaefer/linux/commit/788637d83ef8c8afecfba2f8dad9dfe07627a0a2

``` enable prepare protect duty hardware connection clock count count count rate accuracy phase cycle enable consumer id --------------------------------------------------------------------------------------------------------------------------------------------- clock-48mhz 1 1 0 48000000 0 0 50000 Y deviceless no_connection_id pll1 0 0 0 60000000 0 0 50000 N deviceless no_connection_id usbphy 0 0 0 60000000 0 0 50000 Y deviceless no_connection_id pll0 1 1 0 400000000 0 0 50000 Y deviceless no_connection_id cpusel 2 2 0 400000000 0 0 50000 Y deviceless no_connection_id cpu 2 2 0 200000000 0 0 50000 Y deviceless no_connection_id ahb 1 1 0 100000000 0 0 50000 Y deviceless no_connection_id sdio 0 0 0 100000000 0 0 50000 Y deviceless no_connection_id usb0 0 0 0 100000000 0 0 50000 N deviceless no_connection_id emc1 0 0 0 100000000 0 0 50000 N deviceless no_connection_id emc0 0 0 0 100000000 0 0 50000 N deviceless no_connection_id usb1 0 0 0 100000000 0 0 50000 N deviceless no_connection_id ahb3 1 1 0 12500000 0 0 50000 Y deviceless no_connection_id shm 0 0 0 12500000 0 0 50000 N deviceless no_connection_id xbus 0 0 0 12500000 0 0 50000 N deviceless no_connection_id fiu 1 1 0 12500000 0 0 50000 Y c8000000.spi-controller no_connection_id deviceless no_connection_id apb 0 0 0 50000000 0 0 50000 Y deviceless no_connection_id smb1 0 0 0 50000000 0 0 50000 Y deviceless no_connection_id smb0 0 0 0 50000000 0 0 50000 Y deviceless no_connection_id sspi 0 0 0 50000000 0 0 50000 Y deviceless no_connection_id mft1 0 0 0 50000000 0 0 50000 N deviceless no_connection_id mft0 0 0 0 50000000 0 0 50000 N deviceless no_connection_id pwm 0 0 0 50000000 0 0 50000 N deviceless no_connection_id smb5 0 0 0 50000000 0 0 50000 N deviceless no_connection_id smb4 0 0 0 50000000 0 0 50000 N deviceless no_connection_id smb3 0 0 0 50000000 0 0 50000 N deviceless no_connection_id smb2 0 0 0 50000000 0 0 50000 N deviceless no_connection_id aes 0 0 0 50000000 0 0 50000 N deviceless no_connection_id peci 0 0 0 50000000 0 0 50000 N deviceless no_connection_id kcs 0 0 0 50000000 0 0 50000 N deviceless no_connection_id clock-24mhz 3 3 0 24000000 0 0 50000 Y b8000100.serial no_connection_id b8000000.serial no_connection_id timer@b8001000 no_connection_id deviceless no_connection_id adcdiv 0 0 0 0 0 0 50000 Y deviceless no_connection_id adc 0 0 0 0 0 0 50000 Y deviceless no_connection_id uartsel 0 0 0 0 0 0 50000 Y deviceless no_connection_id uart 0 0 0 0 0 0 50000 Y deviceless no_connection_id uart1 0 0 0 0 0 0 50000 Y deviceless no_connection_id uart0 0 0 0 0 0 0 50000 Y deviceless no_connection_id clkout 0 0 0 0 0 0 50000 Y deviceless no_connection_id refdiv2 0 0 0 0 0 0 50000 Y deviceless no_connection_id wdt 0 0 0 0 0 0 50000 Y deviceless no_connection_id timer4 0 0 0 0 0 0 50000 N deviceless no_connection_id timer3 0 0 0 0 0 0 50000 N deviceless no_connection_id timer2 0 0 0 0 0 0 50000 N deviceless no_connection_id timer1 0 0 0 0 0 0 50000 Y deviceless no_connection_id timer0 0 0 0 0 0 0 50000 Y deviceless no_connection_id huartsel 0 0 0 0 0 0 50000 Y deviceless no_connection_id huart 0 0 0 0 0 0 50000 N deviceless no_connection_id ```