diff options
| author | Johan Hovold <johan+linaro@kernel.org> | 2022-11-05 17:59:36 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2022-11-10 10:04:55 +0300 |
| commit | fffdeaf853d8088c5149fc776974344b0f815dc8 (patch) | |
| tree | c868639f05e89657605064ae0ba76de8702d2b48 /drivers | |
| parent | 7bc609e34899dd3065fc9cbc73bb8a4902e257df (diff) | |
| download | linux-fffdeaf853d8088c5149fc776974344b0f815dc8.tar.xz | |
phy: qcom-qmp-pcie: fix initialisation reset
Add the missing delay after asserting reset. This is specifically needed
for the reset to have any effect on SC8280XP.
The vendor driver uses a 1 ms delay, but that seems a bit excessive.
Instead use a 200 us delay which appears to be more than enough and also
matches the UFS reset delay added by commit 870b1279c7a0 ("scsi:
ufs-qcom: Add reset control support for host controller").
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20221105145939.20318-14-johan+linaro@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/phy/qualcomm/phy-qcom-qmp-pcie.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c index 8af84ff755ab..06844552922e 100644 --- a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c +++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c @@ -1866,6 +1866,8 @@ static int qmp_pcie_init(struct phy *phy) goto err_disable_regulators; } + usleep_range(200, 300); + ret = reset_control_bulk_deassert(cfg->num_resets, qmp->resets); if (ret) { dev_err(qmp->dev, "reset deassert failed\n"); |