Commit 31b2a32f authored May 18, 2016 by Roger Quadros Committed by Kishon Vijay Abraham I Jun 03, 2016

phy: ti-pipe3: Program the DPLL even if it was already locked



If bootloader has set a wrong DPLL then we must trash those values
and re-program it anyways. This fixes USB3 devices not being enumerated
on beagle-x15 if usb was started in u-boot.

We don't re-program SATA DPLL if it is locked as it was causing
SATA failures if device was hotpluged after boot.

Reported-by: Robert Nelson <robertcnelson@gmail.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

parent 06061dc6

drivers/phy/phy-ti-pipe3.c

+11 −4

Original line number	Diff line number	Diff line
		@@ -293,11 +293,18 @@ static int ti_pipe3_init(struct phy *x)
		ret = ti_pipe3_dpll_wait_lock(phy);
		}

		/* Program the DPLL only if not locked */
		/* SATA has issues if re-programmed when locked */
		val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS);
		if (!(val & PLL_LOCK))
		if (ti_pipe3_dpll_program(phy))
		if ((val & PLL_LOCK) && of_device_is_compatible(phy->dev->of_node,
		"ti,phy-pipe3-sata"))
		return ret;

		/* Program the DPLL */
		ret = ti_pipe3_dpll_program(phy);
		if (ret) {
		ti_pipe3_disable_clocks(phy);
		return -EINVAL;
		}

		return ret;
		}