The split register setting is used for both SSPLIT and CSPLIT transactions, the bit for CSPLIT has to be set seperately.
Signed-off-by: Stefan Brüns stefan.bruens@rwth-aachen.de --- drivers/usb/host/dwc2.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/host/dwc2.c b/drivers/usb/host/dwc2.c index 0e710d9..7fbbc4b 100644 --- a/drivers/usb/host/dwc2.c +++ b/drivers/usb/host/dwc2.c @@ -432,10 +432,23 @@ static void dwc_otg_hc_init(struct dwc2_core_regs *regs, uint8_t hc_num, */ writel(hcchar, &hc_regs->hcchar);
- /* Program the HCSPLIT register for SPLITs */ + /* Program the HCSPLIT register, default to no SPLIT */ writel(0, &hc_regs->hcsplt); }
+static void dwc_otg_hc_init_split(struct dwc2_hc_regs *hc_regs, + uint8_t hub_devnum, uint8_t hub_port) +{ + uint32_t hcsplt = 0; + + hcsplt = DWC2_HCSPLT_SPLTENA; + hcsplt |= hub_devnum << DWC2_HCSPLT_HUBADDR_OFFSET; + hcsplt |= hub_port << DWC2_HCSPLT_PRTADDR_OFFSET; + + /* Program the HCSPLIT register for SPLITs */ + writel(hcsplt, &hc_regs->hcsplt); +} + /* * DWC2 to USB API interface */