Boosted CSI clock


I am using a Texas Instruments DS90UB953/UB954 combination ( ie. FPD-Link III ) together with an IMX290 sensor module.

Since the R32.1 kernel, this combination only works if I boost the CSI clocks according to the debug tips from this guide:

Since this is a debug only feature, what does this mean for my production driver? Is there an “official” way to specify such clock requirements?

hello arne.caspari,

CSI clock configuration refer to device tree settings, you should review your serdes_pix_clk_hz property settings. SerDes pixel clock must be specified correctly to configure the SoC-camera interface correctly and avoid buffer overrun issues.
please also access Sensor Driver Programming Guide and check the [SerDes Pixel Clock] session.