Commit 878ed88c authored by Peter Wang's avatar Peter Wang Committed by Martin K. Petersen
Browse files

scsi: ufs: host: mediatek: Change reset sequence for improved stability 



Modify the reset sequence to ensure that the device reset pin is set low
before the host is disabled. This change enhances the stability of the
reset process by ensuring the correct order of operations.

Signed-off-by: default avatarPeter Wang <peter.wang@mediatek.com>
Link: https://lore.kernel.org/r/20250811131423.3444014-10-peter.wang@mediatek.com


Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent bacb96ce

drivers/ufs/host/ufs-mediatek.c

+3 −3
Original line number Diff line number Diff line
@@ -1543,11 +1543,11 @@ static int ufs_mtk_device_reset(struct ufs_hba *hba) 
{

	struct arm_smccc_res res;



	/* disable hba before device reset */

	ufshcd_hba_stop(hba);



	ufs_mtk_device_reset_ctrl(0, res);



	/* disable hba in middle of device reset */

	ufshcd_hba_stop(hba);



	/*

	 * The reset signal is active low. UFS devices shall detect

	 * more than or equal to 1us of positive or negative RST_n