Tool/software:
Hello,
on our AM69 board we use the MCU_CLKOUT0 clock to feed the ethernet phy.
I am able, after fixing a small typo in u-boot (https://lore.kernel.org/all/20240617151756.nonsn4ns6ehs4stf@bryanbrattlof.com/) to have it working.
I'm able to configure at 25 MHz in U-Boot if I set this configuration in R5 SPL:
a72_0: a72@0 {
compatible = "ti,am654-rproc";
...
assigned-clocks = <&k3_clks 61 0>, <&k3_clks 202 0>, <&k3_clks 157 174>;
assigned-clock-parents = <&k3_clks 61 2>, <0>, <&k3_clks 157 176>;
assigned-clock-rates = <200000000>, <2000000000>, <25000000>;
...
If I do the correct thing in the U-Boot device tree (by copying Linux device tree):
&davinci_mdio {
assigned-clocks = <&k3_clks 157 174>;
assigned-clock-parents = <&k3_clks 157 176>;
assigned-clock-rates = <25000000>;
The output frequency is 12.5 MHz.
Interestingly, linux, with the same device tree is configuring the clock correctly.
I do not expect such behavior.
Can you help us figure out why it is not working as expected?
