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authorRoger Quadros <rogerq@ti.com>2016-05-18 15:28:06 +0300
committerKishon Vijay Abraham I <kishon@ti.com>2016-06-03 09:36:41 +0300
commit31b2a32f708bb33b3f35b03ce3d2cb31f7d1e684 (patch)
treecec2d756eb4345065d6af165e5fbcab2e6b98258 /drivers/phy
parent06061dc63bff8d609bc8d64f5d3ef59d0a673b25 (diff)
downloadlinux-31b2a32f708bb33b3f35b03ce3d2cb31f7d1e684.tar.xz
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>
Diffstat (limited to 'drivers/phy')
-rw-r--r--drivers/phy/phy-ti-pipe3.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/phy/phy-ti-pipe3.c b/drivers/phy/phy-ti-pipe3.c
index 0a477d24cf76..bf46844dc387 100644
--- a/drivers/phy/phy-ti-pipe3.c
+++ b/drivers/phy/phy-ti-pipe3.c
@@ -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))
- return -EINVAL;
+ 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;
}