[PATCH v3 11/11] phy: qcom-qmp-pcie: drop bogus register update

[Johan Hovold <johan+linaro@kernel.org>]

Since commit 0d58280cf1e6 ("phy: Update PHY power control sequence") the
PHY is powered on before configuring the registers and only the MSM8996
PCIe PHY, which includes the POWER_DOWN_CONTROL register in its PCS
initialisation table, may possibly require a second update afterwards.

To make things worse, the POWER_DOWN_CONTROL register lies at a
different offset on more recent SoCs so that the second update, which
still used a hard-coded offset, would write to an unrelated register
(e.g. a revision-id register on SC8280XP).

As the MSM8996 PCIe PHY is now handled by a separate driver, simply drop
the bogus register update.

Fixes: e4d8b05ad5f9 ("phy: qcom-qmp: Use proper PWRDOWN offset for sm8150 USB") added support
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> #RB3
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-pcie.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
index cb2128e5a78d..30838ae8f027 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
@@ -2061,12 +2061,6 @@ static int qmp_pcie_power_on(struct phy *phy)
 	qmp_pcie_pcs_init(qphy, &cfg->tables);
 	qmp_pcie_pcs_init(qphy, mode_tables);
 
-	/*
-	 * Pull out PHY from POWER DOWN state.
-	 * This is active low enable signal to power-down PHY.
-	 */
-	qphy_setbits(pcs, QPHY_V2_PCS_POWER_DOWN_CONTROL, cfg->pwrdn_ctrl);
-
 	if (cfg->has_pwrdn_delay)
 		usleep_range(cfg->pwrdn_delay_min, cfg->pwrdn_delay_max);
 
-- 
2.37.3


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