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PL (programmable logic) uses FCLK0..FCLK3 as a clock sources.
Normally they're configured by first stage boot loader (FSBL)
and normal user never has to touch them. These sysctls may come
useful for hardware developers
hw.fpga.fclk.N.source: clock source (IO, DDR, ARM)
hw.fpga.fclk.N.freq: requested frequency in Hz
hw.fpga.fclk.N.actual_freq: actual frequency in Hz (R/O)
hw.fgpa.level_shifters: 0/1 to enable/disable PS-PL level shifters,
normally they're enabled either by FSBL or after programming
FPGA through devcfg(4)
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| .. | ||
| zedboard | ||
| files.zynq7 | ||
| std.zynq7 | ||
| uart_dev_cdnc.c | ||
| zy7_devcfg.c | ||
| zy7_ehci.c | ||
| zy7_gpio.c | ||
| zy7_l2cache.c | ||
| zy7_machdep.c | ||
| zy7_mp.c | ||
| zy7_reg.h | ||
| zy7_slcr.c | ||
| zy7_slcr.h | ||