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omapfb: dss: Fix max fclk divider for omap36xx 

The drm/omap driver was fixed to correct an issue where using a
divider of 32 breaks the DSS despite the TRM stating 32 is a valid
number.  Through experimentation, it appears that 31 works, and
it is consistent with the value used by the drm/omap driver.

This patch fixes the divider for fbdev driver instead of the drm.

Fixes: f76ee892a9 ("omapfb: copy omapdss & displays for omapfb")
Cc: <stable@vger.kernel.org> #4.5+
Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Dave Airlie <airlied@gmail.com>
Cc: Rob Clark <robdclark@gmail.com>
[b.zolnierkie: mark patch as applicable to stable 4.5+ (was 4.9+)]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200630182636.439015-1-aford173@gmail.com
zero-sugar-mainline-defconfig
Adam Ford 2020-06-30 13:26:36 -05:00 committed by Bartlomiej Zolnierkiewicz
parent 78c2ce9bde
commit 254503a2b1
1 changed files with 1 additions and 1 deletions
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2
drivers/video/fbdev/omap2/omapfb/dss/dss.c
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@ -836,7 +836,7 @@ static const struct dss_features omap34xx_dss_feats = {
};
static const struct dss_features omap3630_dss_feats = {
.fck_div_max = 32,
.fck_div_max = 31,
.dss_fck_multiplier = 1,
.parent_clk_name = "dpll4_ck",
.dpi_select_source = &dss_dpi_select_source_omap2_omap3,