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Subject[PATCH v3 2/6] phy/rockchip: inno-hdmi: round fractal pixclock in rk3328 recalc_rate
Date
From: Zheng Yang <zhengyang@rock-chips.com>

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 <zhengyang@rock-chips.com>
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
---
drivers/phy/rockchip/phy-rockchip-inno-hdmi.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)

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,
--
2.17.1
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