| Message ID | 20170616050936.1280-2-architt@codeaurora.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_phy_8996.c b/drivers/gpu/drm/msm/hdmi/hdmi_phy_8996.c index 143eab46ba68..1fb7645cc721 100644 --- a/drivers/gpu/drm/msm/hdmi/hdmi_phy_8996.c +++ b/drivers/gpu/drm/msm/hdmi/hdmi_phy_8996.c @@ -670,6 +670,11 @@ static unsigned long hdmi_8996_pll_recalc_rate(struct clk_hw *hw, static void hdmi_8996_pll_unprepare(struct clk_hw *hw) { + struct hdmi_pll_8996 *pll = hw_clk_to_pll(hw); + struct hdmi_phy *phy = pll_get_phy(pll); + + hdmi_phy_write(phy, REG_HDMI_8996_PHY_CFG, 0x6); + usleep_range(100, 150); } static int hdmi_8996_pll_is_enabled(struct clk_hw *hw)
Without doing anything in unprepare, the HDMI driver isn't able to switch modes successfully. Calling set_rate with a new rate results in an un-locked PLL. If we reset the PLL in unprepare, the PLL is able to lock with the new rate. Signed-off-by: Archit Taneja <architt@codeaurora.org> --- drivers/gpu/drm/msm/hdmi/hdmi_phy_8996.c | 5 +++++ 1 file changed, 5 insertions(+)