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ufs: rockchip: Make use of controller resets

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Assert Rockchip UFS controller resets during initialization and HCE
enable, as it is done by the Linux driver.

This is required to make some UFS chips, such as Foresee FEUDNN064G-C2G0,
work properly.

Note that the resets were already requested in the probe function, just
not used.

Signed-off-by: Alexey Charkov <alchark@flipper.net>
Link: https://patch.msgid.link/20260316-rockchip-ufs-reset-v1-1-808eb017459a@flipper.net
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
This commit is contained in:
Alexey Charkov
2026-03-16 20:50:45 +04:00
committed by Neil Armstrong
parent 052988aa29
commit c7299ff33e
1 changed files with 12 additions and 1 deletions
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13
drivers/ufs/ufs-rockchip.c
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@@ -19,13 +19,22 @@
#include "unipro.h"
#include "ufs-rockchip.h"
static void ufs_rockchip_controller_reset(struct ufs_rockchip_host *host)
{
reset_assert_bulk(&host->rsts);
udelay(1);
reset_deassert_bulk(&host->rsts);
}
static int ufs_rockchip_hce_enable_notify(struct ufs_hba *hba,
enum ufs_notify_change_status status)
{
int err = 0;
if (status != POST_CHANGE)
if (status != POST_CHANGE) {
ufs_rockchip_controller_reset(dev_get_priv(hba->dev));
return 0;
}
ufshcd_dme_reset(hba);
ufshcd_dme_enable(hba);
@@ -150,6 +159,8 @@ static int ufs_rockchip_common_init(struct ufs_hba *hba)
return err;
}
ufs_rockchip_controller_reset(host);
err = gpio_request_by_name(dev, "reset-gpios", 0, &host->device_reset,
GPIOD_IS_OUT | GPIOD_ACTIVE_LOW);
if (err) {