Messages in this thread Patch in this message | | | From | Roger Quadros <> | Subject | [PATCH 10/12] phy: ti-pipe3: Fix suspend/resume and module reload | Date | Mon, 3 Mar 2014 17:07:32 +0200 |
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Due to Errata i783, SATA breaks if its DPLL is idled. The recommeded workaround to issue a softreset to the SATA controller doesn't seem to work. Here we just prevent SATA DPLL from Idling and hence avoid the issue altogether.
Signed-off-by: Roger Quadros <rogerq@ti.com> --- drivers/phy/phy-ti-pipe3.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/phy/phy-ti-pipe3.c b/drivers/phy/phy-ti-pipe3.c index d3c085a..611f7c3 100644 --- a/drivers/phy/phy-ti-pipe3.c +++ b/drivers/phy/phy-ti-pipe3.c @@ -238,6 +238,10 @@ static int ti_pipe3_exit(struct phy *x) u32 val; unsigned long timeout; + /* SATA DPLL can't be powered down due to Errata i783 */ + if (of_device_is_compatible(phy->dev->of_node, "ti,phy-pipe3-sata")) + return 0; + /* Put DPLL in IDLE mode */ val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); val |= PLL_IDLE; -- 1.8.3.2
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