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phy: rockchip: inno-hdmi: set sync detection counter length

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The RK3328 HDMI PHY adds a method to detect the TMDS Data sync
enable status. The counter length is defined as:
	Fref * 495 * 4 / Ftmdsclk
If sync enable counter match the counter length, the sync status
defined in reg0xdd will be set to true.

Change-Id: Ib6a58cb50127e84399011cb398e7fa36f72b3a45
Signed-off-by: Zheng Yang <zhengyang@rock-chips.com>
This commit is contained in:
Zheng Yang
2018-03-01 12:23:54 +08:00
committed by Tao Huang
parent 1ed201f3fa
commit c8b307dd01
1 changed files with 7 additions and 0 deletions
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7
drivers/phy/rockchip/phy-rockchip-inno-hdmi-phy.c
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@@ -732,6 +732,7 @@ inno_hdmi_phy_rk3328_power_on(struct inno_hdmi_phy *inno,
const struct phy_config *phy_cfg)
{
u32 val;
u64 temp;
/* set pdata_en to 0 */
inno_update_bits(inno, 0x02, 1, 0);
@@ -785,6 +786,12 @@ inno_hdmi_phy_rk3328_power_on(struct inno_hdmi_phy *inno,
inno_write(inno, 0xcb, 0x10);
}
/* set TMDS sync detection counter length */
temp = 47520000000;
do_div(temp, inno->tmdsclock);
inno_write(inno, 0xd8, (temp >> 8) & 0xff);
inno_write(inno, 0xd9, temp & 0xff);
/* Power up post PLL */
inno_update_bits(inno, 0xaa, 1, 0);
/* Power up tmds driver */