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litex: System clock frequency selectable from Kconfig.

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This commit is contained in:
Stuart Ianna 2023-01-24 12:40:07 +11:00 committed by Alin Jerpelea
parent e166360e8d
commit f49c20d28f
2 changed files with 7 additions and 1 deletions
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6
arch/risc-v/src/litex/Kconfig
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@ -5,6 +5,12 @@
comment "LITEX Configuration Options" comment "LITEX Configuration Options"
config LITEX_SYS_CORE_FREQ_HZ
int "Risc-V system core frequency (Hz)"
default 100000000
---help---
This value should match default frequency of the FPGA fabric system clock.
menu "LITEX Peripheral Support" menu "LITEX Peripheral Support"
# These "hidden" settings determine whether a peripheral option is available # These "hidden" settings determine whether a peripheral option is available

2
arch/risc-v/src/litex/litex_clockconfig.c
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@ -50,7 +50,7 @@ uint32_t litex_get_hfclk(void)
{ {
/* fpga fabric default sys frequency */ /* fpga fabric default sys frequency */
return 100000000UL; return CONFIG_LITEX_SYS_CORE_FREQ_HZ;
} }
/**************************************************************************** /****************************************************************************