On 5/9/23 06:11, Venkatesh Yadav Abbarapu wrote:
Currently the parent node(dwc3) ref_clk is updated to the dwc3->ref_clk, but we need to update the child node(dwc3) "ref" clock to the dwc3->ref_clk. For versal SOC, the parent node(usb) ref_clk is updated to dwc3->ref_clk which is USB3_DUAL_REF, whereas it should contain the child node(dwc3) "ref" clk i.e., USB0_BUS_REF. With this once we trigger "usb start" the device is crashing. For ZynqMP SOC, crash is not observed because the parent node(usb) ref_clk and the child node(dwc3) "ref" clk is pointing to same USB3_DUAL_REF clock. Fix this by directly updating the child node(dwc3) "ref" clk to dwc3->ref_clk from the dwc3_of_parse() function.
Signed-off-by: Venkatesh Yadav Abbarapu venkatesh.abbarapu@amd.com
TBD: Need to port the clocks patch from linux kernel
I will wait for a proper backport of all the missing patches, not just a subset.
Also, this is clearly a work-in-progress patch, please mark it as "[RFC]" next time.