[02/15] phy/rockchip: inno-hdmi: round fractal pixclock in rk3328 recalc_rate

Commit Message

Jonas Karlman Jan. 6, 2020, 8:47 p.m. UTC

From: Zheng Yang <[e-mail]>

inno_hdmi_phy_rk3328_clk_recalc_rate() is returning a rate not found
in the pre pll config table when the fractal divider is used.
This can prevent proper power_on because a tmdsclock for the new rate
is not found in the pre pll config table.

Fix this by saving and returning a rounded pixel rate that exist
in the pre pll config table.

Fixes: 53706a116863 ("phy: add Rockchip Innosilicon hdmi phy")
Signed-off-by: Zheng Yang <[e-mail]>
Signed-off-by: Jonas Karlman <[e-mail]>
---
 drivers/phy/rockchip/phy-rockchip-inno-hdmi.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

Patch

diff --git a/drivers/phy/rockchip/phy-rockchip-inno-hdmi.c b/drivers/phy/rockchip/phy-rockchip-inno-hdmi.c
index b0ac1d3ee390..093d2334e8cd 100644
--- a/drivers/phy/rockchip/phy-rockchip-inno-hdmi.c
+++ b/drivers/phy/rockchip/phy-rockchip-inno-hdmi.c
@@ -745,10 +745,12 @@  unsigned long inno_hdmi_phy_rk3328_clk_recalc_rate(struct clk_hw *hw,
 		do_div(vco, (nd * (no_a == 1 ? no_b : no_a) * no_d * 2));
 	}
 
-	inno->pixclock = vco;
-	dev_dbg(inno->dev, "%s rate %lu\n", __func__, inno->pixclock);
+	inno->pixclock = DIV_ROUND_CLOSEST((unsigned long)vco, 1000) * 1000;
 
-	return vco;
+	dev_dbg(inno->dev, "%s rate %lu vco %llu\n",
+		__func__, inno->pixclock, vco);
+
+	return inno->pixclock;
 }
 
 static long inno_hdmi_phy_rk3328_clk_round_rate(struct clk_hw *hw,