USB: DWC3: Issue device soft reset before core soft reset
Synopsys specification clearly states under section "Device Power-On or
Soft Reset" that DCTL.CSftRst=1 should be first step. So, just follow
what specification says.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index ac151e9..c34452a 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -335,8 +335,6 @@
}
dwc->revision = reg;
- dwc3_core_soft_reset(dwc);
-
/* issue device SoftReset too */
timeout = jiffies + msecs_to_jiffies(500);
dwc3_writel(dwc->regs, DWC3_DCTL, DWC3_DCTL_CSFTRST);
@@ -354,6 +352,8 @@
cpu_relax();
} while (true);
+ dwc3_core_soft_reset(dwc);
+
dwc3_cache_hwparams(dwc);
reg = dwc3_readl(dwc->regs, DWC3_GCTL);