Hello! I wanted to know how can I enable different clocks for MIPI DSI. I found that on display DTSI file there is a parameter: nvidia,out-parent-clk = "pll_d"; - I thought that changing pll_d to a different clock - ex. pll_e would work because I wanted to have lower MIPI clock rate. However it seems that most clocks are disabled by default? How can I enable them?
cat /sys/kernel/debug/clk/pll_d/clk_enable_count is 4 while cat /sys/kernel/debug/clk/pll_e/clk_enable_count is 2 and it doesn’t work, if I replace pll_d with pll_e in device tree.
Generally there should be a “possible_parents” node inside each of client. For example, sor has such node and it can change parent clock from that list. I am not sure about DSI. If there isn’t this, then may not able to configure.