diff mbox series

[6/6] scsi: ufs: exynos: put ufs device in reset on .exit() and .suspend()

Message ID 20250226220414.343659-7-peter.griffin@linaro.org (mailing list archive)
State New
Headers show
Series ufs-exynos fixes for gs101 | expand

Commit Message

Peter Griffin Feb. 26, 2025, 10:04 p.m. UTC 
GPIO_OUT[0] is connected to the reset pin of embedded UFS device.
Before powering off the phy assert the reset signal.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
---
 drivers/ufs/host/ufs-exynos.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/drivers/ufs/host/ufs-exynos.c b/drivers/ufs/host/ufs-exynos.c
index 4c3e03a3b8d9..64e2bf924213 100644
--- a/drivers/ufs/host/ufs-exynos.c
+++ b/drivers/ufs/host/ufs-exynos.c
@@ -1517,6 +1517,7 @@  static void exynos_ufs_exit(struct ufs_hba *hba)
 {
 	struct exynos_ufs *ufs = ufshcd_get_variant(hba);
 
+	hci_writel(ufs, 0 << 0, HCI_GPIO_OUT);
 	phy_power_off(ufs->phy);
 	phy_exit(ufs->phy);
 }
@@ -1700,6 +1701,8 @@  static int exynos_ufs_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op,
 	if (status == PRE_CHANGE)
 		return 0;
 
+	hci_writel(ufs, 0 << 0, HCI_GPIO_OUT);
+
 	if (!ufshcd_is_link_active(hba))
 		phy_power_off(ufs->phy);