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usb: dwc3: xilinx: use reset_control_reset() in versal init

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Replace reset_control_assert()/deassert() with reset_control_reset().
For dwc3-xilinx, reset_control_reset() routes via the zynqmp reset
driver and uses PM_RESET_ACTION_PULSE, which performs assert and
deassert in firmware. This results in a single SMC call issuing a
reset pulse and taking the IP out of reset.

Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/6a5e4e25d84d6abc971f1669739aae4d3146700f.1779518171.git.radhey.shyam.pandey@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Radhey Shyam Pandey 2026-05-23 12:38:37 +05:30 committed by Greg Kroah-Hartman
parent 83f4f829a5
commit cfdc9bde49
1 changed files with 4 additions and 12 deletions
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16
drivers/usb/dwc3/dwc3-xilinx.c
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@ -98,18 +98,10 @@ static int dwc3_xlnx_init_versal(struct dwc3_xlnx *priv_data)
dwc3_xlnx_mask_phy_rst(priv_data, false);
/* Assert and De-assert reset */
ret = reset_control_assert(crst);
if (ret < 0) {
dev_err_probe(dev, ret, "failed to assert Reset\n");
return ret;
}
ret = reset_control_deassert(crst);
if (ret < 0) {
dev_err_probe(dev, ret, "failed to De-assert Reset\n");
return ret;
}
/* assert and deassert reset */
ret = reset_control_reset(crst);
if (ret)
return dev_err_probe(dev, ret, "failed to assert and deassert reset\n");
dwc3_xlnx_mask_phy_rst(priv_data, true);
dwc3_xlnx_set_coherency(priv_data, XLNX_USB2_TRAFFIC_ROUTE_CONFIG);