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usb: dwc2: use buffer dma for device mode

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The DWC2 driver auto detects the hardware and enable
the gadget descriptor DMA if the DWC2 IP supports it.
However, the gadget descriptor DMA has some unexpected
compatibility issues, so we use buffer DMA instead of
desc DMA.

Change-Id: I1fed77f7d9bec1e0916b44d80813fb6248d461f0
Signed-off-by: William Wu <william.wu@rock-chips.com>
This commit is contained in:
William Wu
2020-04-16 11:22:49 +08:00
committed by Tao Huang
parent 4ff037c13c
commit 5775fe3ffe
1 changed files with 1 additions and 0 deletions
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drivers/usb/dwc2/params.c
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@@ -89,6 +89,7 @@ static void dwc2_set_rk_params(struct dwc2_hsotg *hsotg)
p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
GAHBCFG_HBSTLEN_SHIFT;
p->lpm = false;
p->g_dma_desc = false;
p->power_down = 0;
}