Commit 32b615ed authored by Chunfeng Yun's avatar Chunfeng Yun Committed by Greg Kroah-Hartman
Browse files

usb: xhci-mtk: add support optional controller reset 



Add support controller reset via a reset-controller usually in infracfg,
it's different with the software reset by IPPC which only used to reset MAC,
and it will also reset IPPC meanwhile.

Reviewed-by: default avatarAngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: default avatarChunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/20220523090449.14430-3-chunfeng.yun@mediatek.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 0efcd085

drivers/usb/host/xhci-mtk.c

+7 −0
Original line number Diff line number Diff line
@@ -18,6 +18,7 @@ 
#include <linux/pm_wakeirq.h>

#include <linux/regmap.h>

#include <linux/regulator/consumer.h>

#include <linux/reset.h>



#include "xhci.h"

#include "xhci-mtk.h"
@@ -550,6 +551,12 @@ static int xhci_mtk_probe(struct platform_device *pdev) 
	if (ret)

		goto disable_ldos;



	ret = device_reset_optional(dev);

	if (ret) {

		dev_err_probe(dev, ret, "failed to reset controller\n");

		goto disable_clk;

	}



	hcd = usb_create_hcd(driver, dev, dev_name(dev));

	if (!hcd) {

		ret = -ENOMEM;