From: Adam Ford aford173@gmail.com
commit 254503a2b186caa668a188dbbd7ab0d25149c0a5 upstream.
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: f76ee892a99e ("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-aford1... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/video/fbdev/omap2/omapfb/dss/dss.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/video/fbdev/omap2/omapfb/dss/dss.c b/drivers/video/fbdev/omap2/omapfb/dss/dss.c index f0cac9e0eb94..b6c6c24979dd 100644 --- a/drivers/video/fbdev/omap2/omapfb/dss/dss.c +++ b/drivers/video/fbdev/omap2/omapfb/dss/dss.c @@ -844,7 +844,7 @@ 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,