diff options
Diffstat (limited to 'drivers/clk/at91/Kconfig')
| -rw-r--r-- | drivers/clk/at91/Kconfig | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/clk/at91/Kconfig b/drivers/clk/at91/Kconfig new file mode 100644 index 0000000000..10050d8a44 --- /dev/null +++ b/drivers/clk/at91/Kconfig @@ -0,0 +1,43 @@ +config CLK_AT91 + bool "AT91 clock drivers" + depends on CLK + help + This option is used to enable the AT91 clock driver. + The driver supports the AT91 clock generator, including + the oscillators and PLLs, such as main clock, slow clock, + PLLA, UTMI PLL. Clocks can also be a source clock of other + clocks a tree structure, such as master clock, usb device + clock, matrix clock and generic clock. + Devices can use a common clock API to request a particular + clock, enable it and get its rate. + +config AT91_UTMI + bool "Support UTMI PLL Clock" + depends on CLK_AT91 + help + This option is used to enable the AT91 UTMI PLL clock + driver. It is the clock provider of USB, and UPLLCK is the + output of 480 MHz UTMI PLL, The souce clock of the UTMI + PLL is the main clock, so the main clock must select the + fast crystal oscillator to meet the frequency accuracy + required by USB. + +config AT91_H32MX + bool "Support H32MX 32-bit Matrix Clock" + depends on CLK_AT91 + help + This option is used to enable the AT91 H32MX matrixes + clock driver. There are H64MX and H32MX matrixes clocks, + H64MX 64-bit matrix clocks are MCK. The H32MX 32-bit + matrix clock is to be configured as MCK if MCK does not + exceed 83 MHz, else it is to be configured as MCK/2. + +config AT91_GENERIC_CLK + bool "Support Generic Clock" + depends on CLK_AT91 + help + This option is used to enable the AT91 generic clock + driver. Some peripherals may need a second clock source + that may be different from the system clock. This second + clock is the generic clock (GCLK) and is managed by + the PMC via PMC_PCR register. |