[PATCH 13/13] OMAPDSS: DSI: disable DDR_CLK_ALWAYS_ON when entering ULPS

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ULPS cannot be entered if the DDR clk is enabled. Thus disable the DDR
clk before entering ULPS.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
---
 drivers/video/omap2/dss/dsi.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c
index a01a011..9bcb5c2 100644
--- a/drivers/video/omap2/dss/dsi.c
+++ b/drivers/video/omap2/dss/dsi.c
@@ -3544,9 +3544,11 @@ static int dsi_enter_ulps(struct platform_device *dsidev)
 	if (dsi->ulps_enabled)
 		return 0;
 
+	/* DDR_CLK_ALWAYS_ON */
 	if (REG_GET(dsidev, DSI_CLK_CTRL, 13, 13)) {
-		DSSERR("DDR_CLK_ALWAYS_ON enabled when entering ULPS\n");
-		return -EIO;
+		dsi_if_enable(dsidev, 0);
+		REG_FLD_MOD(dsidev, DSI_CLK_CTRL, 0, 13, 13);
+		dsi_if_enable(dsidev, 1);
 	}
 
 	dsi_sync_vc(dsidev, 0);
-- 
1.7.4.1

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