diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/dwc3/core.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 300450100c9..ed5d0d16f78 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -14,6 +14,7 @@ */ #include <common.h> +#include <clk.h> #include <cpu_func.h> #include <malloc.h> #include <dwc3-uboot.h> @@ -126,14 +127,24 @@ static void dwc3_frame_length_adjustment(struct dwc3 *dwc, u32 fladj) */ static void dwc3_ref_clk_period(struct dwc3 *dwc) { + unsigned long period; + unsigned long rate; u32 reg; - if (dwc->ref_clk_per == 0) + if (dwc->ref_clk) { + rate = clk_get_rate(dwc->ref_clk); + if (!rate) + return; + period = NSEC_PER_SEC / rate; + } else if (dwc->ref_clk_per) { + period = dwc->ref_clk_per; + } else { return; + } reg = dwc3_readl(dwc->regs, DWC3_GUCTL); reg &= ~DWC3_GUCTL_REFCLKPER_MASK; - reg |= FIELD_PREP(DWC3_GUCTL_REFCLKPER_MASK, dwc->ref_clk_per); + reg |= FIELD_PREP(DWC3_GUCTL_REFCLKPER_MASK, period); dwc3_writel(dwc->regs, DWC3_GUCTL, reg); } |