diff options
| author | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2020-10-15 22:03:32 +0300 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2020-11-04 08:26:26 -0800 |
| commit | e92ce317fbeb79d1e3869324059e1a47294dab18 (patch) | |
| tree | 4fad3ed44c659de69ac5e950f5bb2ba1fac91f45 /drivers | |
| parent | b66ccc571319627931e3e61a72747329387eab45 (diff) | |
| download | linux-e92ce317fbeb79d1e3869324059e1a47294dab18.tar.bz2 | |
drm/msm/dsi_phy_10nm: implement PHY disabling
Implement phy_disable() callback to disable DSI PHY lanes and blocks
when phy is not used.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Fixes: ff73ff194060 ("drm/msm/dsi: Populate the 10nm PHY funcs")
Signed-off-by: Rob Clark <robdclark@chromium.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c index 47403d4f2d28..d1b92d4dc197 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c @@ -192,6 +192,28 @@ static int dsi_10nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id, static void dsi_10nm_phy_disable(struct msm_dsi_phy *phy) { + void __iomem *base = phy->base; + u32 data; + + DBG(""); + + if (dsi_phy_hw_v3_0_is_pll_on(phy)) + pr_warn("Turning OFF PHY while PLL is on\n"); + + dsi_phy_hw_v3_0_config_lpcdrx(phy, false); + data = dsi_phy_read(base + REG_DSI_10nm_PHY_CMN_CTRL_0); + + /* disable all lanes */ + data &= ~0x1F; + dsi_phy_write(base + REG_DSI_10nm_PHY_CMN_CTRL_0, data); + dsi_phy_write(base + REG_DSI_10nm_PHY_CMN_LANE_CTRL0, 0); + + /* Turn off all PHY blocks */ + dsi_phy_write(base + REG_DSI_10nm_PHY_CMN_CTRL_0, 0x00); + /* make sure phy is turned off */ + wmb(); + + DBG("DSI%d PHY disabled", phy->id); } static int dsi_10nm_phy_init(struct msm_dsi_phy *phy) |