testing: add txusrclk mmcm & loopback mode
testing: add debug output
testing: send comma in the middle of long packet to maintain lock
downconn: don't put IDLE into fifo
downconn: add GTX and QPLL support
downconn: add DRP for GTX and QPLL to support all CXP linerates
GTX: add gtx with mmcm for TXUSRCLK freq requirement
GTX: add loopback mode parameter for testing
GTX: add gtx with 40bits internal width
GTX: use built-in comma aligner
GTX: add comma checker to ensure comma is aligner on highest linerate
GTX: set QPLL as CLK source for GTX
runtime: drive CLK_SEL to true when si549 is used
runtime & libboard_artiq: allow standalone to use io_expander
si549: add bit bang mmcm dynamic configuration
si549: add frequency counter for refclk
rtio_clocking & si549: add 125Mhz wrpll refclk setup
satman: drive CLK_SEL to true when si549 is used
satman : add main & helper si549 setup
satman : add WRPLL select_recovered_clock
si549: add tag collector to process gtx & main tags
si549: add frequency counter to set BASE_ADPLL
si549: add set_adpll for main & helper PLL
si549: add main & helper PLL
FIQ & si549: replace dummy with a custom handler for gtx & main tags ISR
io_expander: set CLK_SEL pin to output when si549 is used
io_expander: gate virtual leds for standalone
si549: add bit bang i2c
si549: add si549 programming
si549: add main & helper setup
kasli_soc: use enable_wrpll from json to switch from si5324 to si549
kasli_soc: add wrpll for all variants
kasli_soc: add gtx & main tag nFIQ for all variants
kasli_soc: add clk_synth_se for master & satellite
kasli_soc: add wrpll_refclk for runtime
kasli_soc: add skewtester for satman
kasli_soc: add WRPLL_REF_CLK config for firmware
ddmtd: add DDMTD and deglitcher
wrpll: add helper clockdomain
wrpll: add frequency counter
wrpll: add skewtester
wrpll: add gtx & main tag collection
wrpll: add gtx & main tag eventmanager for shared peripheral interrupt
wrpll: add SMA frequency multiplier to generate 125Mhz refclk
si549: add i2c and adpll programmer