Thread (36 messages) flat view 36 messages, 6 authors, 2016-06-10
STALE3719d

[PATCH 06/20] drm/sun4i: allow dclk to modify its parent rate

From: Maxime Ripard <hidden>
Date: 2016-05-16 12:47:06
Also in: dri-devel, linux-arm-kernel, linux-clk
Subsystem: drm drivers, drm drivers and misc gpu patches, drm drivers for allwinner a10, the rest · Maintainers: David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Chen-Yu Tsai, Linus Torvalds

The pixel clock being only a divider of its parent clock, depending on the
resolution, it's expected to change its parent rate. Add that flag so that
the clock framework knows it.

Fixes: 9026e0d122ac ("drm: Add Allwinner A10 Display Engine support")
Signed-off-by: Maxime Ripard <redacted>
---
 drivers/gpu/drm/sun4i/sun4i_dotclock.c | 1 +
 1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/sun4i/sun4i_dotclock.c b/drivers/gpu/drm/sun4i/sun4i_dotclock.c
index 1ddf6d7a7107..5b3463197c48 100644
--- a/drivers/gpu/drm/sun4i/sun4i_dotclock.c
+++ b/drivers/gpu/drm/sun4i/sun4i_dotclock.c
@@ -170,6 +170,7 @@ int sun4i_dclk_create(struct device *dev, struct sun4i_tcon *tcon)
 	init.ops = &sun4i_dclk_ops;
 	init.parent_names = &parent_name;
 	init.num_parents = 1;
+	init.flags = CLK_SET_RATE_PARENT;
 
 	dclk->regmap = tcon->regs;
 	dclk->hw.init = &init;
-- 
2.8.2
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