Commit 16b30c7a authored by Peter Wang's avatar Peter Wang Committed by Martin K. Petersen
Browse files

scsi: ufs: host: mediatek: Change ref-clk timeout policy 



Update the timeout policy for ref-clk control.

 - If a clock-on operation times out, it is assumed that the clock is
   off. The system will notify TFA to perform clock-off settings.

 - If a clock-off operation times out, it is assumed that the clock will
   eventually turn off. The 'ref_clk_enabled' flag is set directly.

Signed-off-by: default avatarPeter Wang <peter.wang@mediatek.com>
Link: https://lore.kernel.org/r/20250722030841.1998783-4-peter.wang@mediatek.com


Reviewed-by: default avatarChun-Hung Wu <chun-hung.wu@mediatek.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent a84a9ba7

drivers/ufs/host/ufs-mediatek.c

+10 −1
Original line number Diff line number Diff line
@@ -351,7 +351,16 @@ static int ufs_mtk_setup_ref_clk(struct ufs_hba *hba, bool on) 


	dev_err(hba->dev, "missing ack of refclk req, reg: 0x%x\n", value);



	ufs_mtk_ref_clk_notify(host->ref_clk_enabled, POST_CHANGE, res);

	/*

	 * If clock on timeout, assume clock is off, notify tfa do clock

	 * off setting.(keep DIFN disable, release resource)

	 * If clock off timeout, assume clock will off finally,

	 * set ref_clk_enabled directly.(keep DIFN disable, keep resource)

	 */

	if (on)

		ufs_mtk_ref_clk_notify(false, POST_CHANGE, res);

	else

		host->ref_clk_enabled = false;



	return -ETIMEDOUT;