diff options
Diffstat (limited to 'drivers/clk/baikal-t1/Kconfig')
| -rw-r--r-- | drivers/clk/baikal-t1/Kconfig | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/clk/baikal-t1/Kconfig b/drivers/clk/baikal-t1/Kconfig new file mode 100644 index 0000000000..f0b1868303 --- /dev/null +++ b/drivers/clk/baikal-t1/Kconfig @@ -0,0 +1,52 @@ +# SPDX-License-Identifier: GPL-2.0-only +config CLK_BAIKAL_T1 + bool "Baikal-T1 Clocks Control Unit interface" + depends on (MIPS_BAIKAL_T1 && OF) || COMPILE_TEST + default MIPS_BAIKAL_T1 + help + Clocks Control Unit is the core of Baikal-T1 SoC System Controller + responsible for the chip subsystems clocking and resetting. It + consists of multiple global clock domains, which can be reset by + means of the CCU control registers. These domains and devices placed + in them are fed with clocks generated by a hierarchy of PLLs, + configurable and fixed clock dividers. Enable this option to be able + to select Baikal-T1 CCU PLLs and Dividers drivers. + +if CLK_BAIKAL_T1 + +config CLK_BT1_CCU_PLL + bool "Baikal-T1 CCU PLLs support" + select MFD_SYSCON + default MIPS_BAIKAL_T1 + help + Enable this to support the PLLs embedded into the Baikal-T1 SoC + System Controller. These are five PLLs placed at the root of the + clocks hierarchy, right after an external reference oscillator + (normally of 25MHz). They are used to generate high frequency + signals, which are either directly wired to the consumers (like + CPUs, DDR, etc.) or passed over the clock dividers to be only + then used as an individual reference clock of a target device. + +config CLK_BT1_CCU_DIV + bool "Baikal-T1 CCU Dividers support" + select MFD_SYSCON + default MIPS_BAIKAL_T1 + help + Enable this to support the CCU dividers used to distribute clocks + between AXI-bus and system devices coming from CCU PLLs of Baikal-T1 + SoC. CCU dividers can be either configurable or with fixed divider, + either gateable or ungateable. Some of the CCU dividers can be as well + used to reset the domains they're supplying clock to. + +config CLK_BT1_CCU_RST + bool "Baikal-T1 CCU Resets support" + select RESET_CONTROLLER + select MFD_SYSCON + default MIPS_BAIKAL_T1 + help + Enable this to support the CCU reset blocks responsible for the + AXI-bus and some subsystems reset. These are mainly the + self-deasserted reset controls but there are several lines which + can be directly asserted/de-asserted (PCIe and DDR sub-domains). + +endif |