From mboxrd@z Thu Jan 1 00:00:00 1970 From: giulio.benetti@micronovasrl.com (Giulio Benetti) Date: Wed, 28 Feb 2018 18:53:51 +0100 Subject: [PATCH 1/2] drm/sun4i: increase lvds dclk max divisor Message-ID: <1519840432-61489-1-git-send-email-giulio.benetti@micronovasrl.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org At the moment both min and max dclk div are set to 7. This doesn't allow to have lower frequencies. Increase dclk_max_div to 18 to achieve 30Mhz. Signed-off-by: Giulio Benetti --- drivers/gpu/drm/sun4i/sun4i_tcon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c index 029d2ce..bb35f41 100644 --- a/drivers/gpu/drm/sun4i/sun4i_tcon.c +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c @@ -278,7 +278,7 @@ static void sun4i_tcon0_mode_set_lvds(struct sun4i_tcon *tcon, u32 reg, val = 0; tcon->dclk_min_div = 7; - tcon->dclk_max_div = 7; + tcon->dclk_max_div = 18; sun4i_tcon0_mode_set_common(tcon, mode); /* Adjust clock delay */ -- 2.7.4