diff options
| author | Laurent Pinchart | 2017-01-17 09:29:09 +0100 |
|---|---|---|
| committer | Archit Taneja | 2017-01-18 04:59:37 +0100 |
| commit | 2668db37888ff63282147b00dcf54fa491831df3 (patch) | |
| tree | 7b61afb6931e9c3db351177376e40ecc81e678f3 /drivers/gpu/drm/bridge | |
| parent | drm: bridge: dw-hdmi: Fix the name of the PHY reset macros (diff) | |
| download | kernel-qcow2-linux-2668db37888ff63282147b00dcf54fa491831df3.tar.gz kernel-qcow2-linux-2668db37888ff63282147b00dcf54fa491831df3.tar.xz kernel-qcow2-linux-2668db37888ff63282147b00dcf54fa491831df3.zip | |
drm: bridge: dw-hdmi: Assert SVSRET before resetting the PHY
According to the PHY IP core vendor, the SVSRET signal must be asserted
before resetting the PHY. Tests on RK3288 and R-Car Gen3 showed no
regression, the change should thus be safe.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170117082910.27023-20-laurent.pinchart+renesas@ideasonboard.com
Diffstat (limited to 'drivers/gpu/drm/bridge')
| -rw-r--r-- | drivers/gpu/drm/bridge/dw-hdmi.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/gpu/drm/bridge/dw-hdmi.c b/drivers/gpu/drm/bridge/dw-hdmi.c index 93e8816f1f78..4fda0717e789 100644 --- a/drivers/gpu/drm/bridge/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/dw-hdmi.c @@ -986,6 +986,10 @@ static int hdmi_phy_configure(struct dw_hdmi *hdmi, int cscon) /* gen2 pddq */ dw_hdmi_phy_gen2_pddq(hdmi, 1); + /* Leave low power consumption mode by asserting SVSRET. */ + if (hdmi->phy->has_svsret) + dw_hdmi_phy_enable_svsret(hdmi, 1); + /* PHY reset. The reset signal is active high on Gen2 PHYs. */ hdmi_writeb(hdmi, HDMI_MC_PHYRSTZ_PHYRSTZ, HDMI_MC_PHYRSTZ); hdmi_writeb(hdmi, 0, HDMI_MC_PHYRSTZ); @@ -1028,11 +1032,7 @@ static int hdmi_phy_configure(struct dw_hdmi *hdmi, int cscon) dw_hdmi_phy_gen2_txpwron(hdmi, 1); dw_hdmi_phy_gen2_pddq(hdmi, 0); - /* The DWC MHL and HDMI 2.0 PHYs need the SVSRET signal to be set. */ - if (hdmi->phy->has_svsret) - dw_hdmi_phy_enable_svsret(hdmi, 1); - - /*Wait for PHY PLL lock */ + /* Wait for PHY PLL lock */ msec = 5; do { val = hdmi_readb(hdmi, HDMI_PHY_STAT0) & HDMI_PHY_TX_PHY_LOCK; |