[PATCH] phy: xilinx: zynqmp: skip PHY initialization and PLL lock for USB
From: Piyush Mehta <hidden>
Date: 2021-08-18 08:43:46
Also in:
linux-arm-kernel, lkml
Subsystem:
generic phy framework, the rest, xilinx zynqmp psgtr phy driver · Maintainers:
Vinod Koul, Linus Torvalds, Tomi Valkeinen, Radhey Shyam Pandey
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 <redacted> --- drivers/phy/xilinx/phy-zynqmp.c | 3 +++ 1 file changed, 3 insertions(+)
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
--
2.25.1
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