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authorPiyush Mehta2021-08-18 14:13:11 +0530
committerVinod Koul2021-08-18 15:44:14 +0530
commit89161cd00838ac25f401e3d149171908148af7be (patch)
tree333733c339e6542515de243c6414eaa3d8a6f12e /drivers/phy
parentc7c4024348994208ac3bf85daf1a6195b7c5f7d3 (diff)
phy: xilinx: zynqmp: skip PHY initialization and PLL lock for USB
PHY initialization for USB is required on linux boot or when gt lane is changed from the current one and it is applicable on PLL lock too. Signed-off-by: Piyush Mehta <piyush.mehta@xilinx.com> Link: https://lore.kernel.org/r/20210818084311.2643986-1-piyush.mehta@xilinx.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/phy')
-rw-r--r--drivers/phy/xilinx/phy-zynqmp.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/phy/xilinx/phy-zynqmp.c b/drivers/phy/xilinx/phy-zynqmp.c
index 35652152ce5d..f478d8a17115 100644
--- a/drivers/phy/xilinx/phy-zynqmp.c
+++ b/drivers/phy/xilinx/phy-zynqmp.c
@@ -626,6 +626,9 @@ static int xpsgtr_phy_power_on(struct phy *phy)
struct xpsgtr_phy *gtr_phy = phy_get_drvdata(phy);
int ret = 0;
+ /* Skip initialization if not required. */
+ if (!xpsgtr_phy_init_required(gtr_phy))
+ return ret;
/*
* Wait for the PLL to lock. For DP, only wait on DP0 to avoid
* cumulating waits for both lanes. The user is expected to initialize