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drm/sun4i: Create minimal multipliers and dividers

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The various outputs the TCON can provide have different constraints on the
dotclock divider. Let's make them configurable by the various mode_set
functions.

Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/92ff5881c8f8674056d34458b2f264cd48d4e136.1513854122.git-series.maxime.ripard@free-electrons.com
This commit is contained in:
Maxime Ripard
2017-12-21 12:02:32 +01:00
parent edea372bd2
commit ec08d5966b
3 changed files with 11 additions and 3 deletions
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2
drivers/gpu/drm/sun4i/sun4i_tcon.c
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@@ -177,6 +177,8 @@ static void sun4i_tcon0_mode_set_rgb(struct sun4i_tcon *tcon,
u8 clk_delay;
u32 val = 0;
tcon->dclk_min_div = 6;
tcon->dclk_max_div = 127;
sun4i_tcon0_mode_set_common(tcon, mode);
/* Adjust clock delay */