drivers/clk/at91/Kconfig

   1 config CLK_AT91
   2         bool "AT91 clock drivers"
   3         depends on CLK
   4         select MISC
   5         help
   6           This option is used to enable the AT91 clock driver.
   7           The driver supports the AT91 clock generator, including
   8           the oscillators and PLLs, such as main clock, slow clock,
   9           PLLA, UTMI PLL. Clocks can also be a source clock of other
  10           clocks a tree structure, such as master clock, usb device
  11           clock, matrix clock and generic clock.
  12           Devices can use a common clock API to request a particular
  13           clock, enable it and get its rate.
  14
  15 config AT91_UTMI
  16         bool "Support UTMI PLL Clock"
  17         depends on CLK_AT91
  18         select REGMAP
  19         select SPL_REGMAP if SPL_DM
  20         select SYSCON
  21         select SPL_SYSCON if SPL_DM
  22         help
  23           This option is used to enable the AT91 UTMI PLL clock
  24           driver. It is the clock provider of USB, and UPLLCK is the
  25           output of 480 MHz UTMI PLL, The souce clock of the UTMI
  26           PLL is the main clock, so the main clock must select the
  27           fast crystal oscillator to meet the frequency accuracy
  28           required by USB.
  29
  30 config AT91_USB_CLK
  31         bool "Support USB OHCI Input Clock"
  32         depends on CLK_AT91
  33         help
  34           This option is used to enable the USB Input Clock, from
  35           the device tree, configure the USBS bit (PLLA or UTMI PLL)
  36           and USBDIV field of the PMC_USB register.
  37
  38 config AT91_H32MX
  39         bool "Support H32MX 32-bit Matrix Clock"
  40         depends on CLK_AT91
  41         help
  42           This option is used to enable the AT91 H32MX matrixes
  43           clock driver. There are H64MX and H32MX matrixes clocks,
  44           H64MX 64-bit matrix clocks are MCK. The H32MX 32-bit
  45           matrix clock is to be configured as MCK if MCK does not
  46           exceed 83 MHz, else it is to be configured as MCK/2.
  47
  48 config AT91_GENERIC_CLK
  49         bool "Support Generic Clock"
  50         depends on CLK_AT91
  51         help
  52           This option is used to enable the AT91 generic clock
  53           driver. Some peripherals may need a second clock source
  54           that may be different from the system clock. This second
  55           clock is the generic clock (GCLK) and is managed by
  56           the PMC via PMC_PCR register.
  57
  58 config AT91_SAM9X60_PLL
  59         bool "PLL support for SAM9X60 SoCs"
  60         depends on CLK_AT91
  61         help
  62           This option is used to enable the AT91 SAM9X60's PLL clock
  63           driver.
  64
  65 config AT91_SAM9X60_USB
  66         bool "USB Clock support for SAM9X60 SoCs"
  67         depends on CLK_AT91
  68         help
  69           This option is used to enable the AT91 SAM9X60's USB clock
  70           driver.