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| author | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2021-08-05 20:08:17 +0300 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2021-08-10 15:30:32 -0700 |
| commit | 858c595a3f5d66db1ed003fdefef374ea4a8c961 (patch) | |
| tree | 0e25a96cde6dc76af6e776784fa0206cf14fb375 /drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c | |
| parent | 26ae419cd9eca4268c267a1910bdac4ae6ef4896 (diff) | |
| download | linux-858c595a3f5d66db1ed003fdefef374ea4a8c961.tar.gz linux-858c595a3f5d66db1ed003fdefef374ea4a8c961.tar.bz2 linux-858c595a3f5d66db1ed003fdefef374ea4a8c961.zip | |
drm/msm/dsi: add continuous clock support for 7nm PHY
Unlike previous generations, 7nm PHYs are required to collaborate with
the host for continuos clock mode. Add changes neccessary to enable
continuous clock mode in the 7nm DSI PHYs.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20210805170817.3337665-1-dmitry.baryshkov@linaro.org
[Fix merge conflict, and $description typo]
Signed-off-by: Rob Clark <robdclark@chromium.org>
Diffstat (limited to 'drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c')
| -rw-r--r-- | drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c index 73b2a87b6277..cb297b08458e 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c @@ -991,6 +991,21 @@ static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy, return 0; } +static bool dsi_7nm_set_continuous_clock(struct msm_dsi_phy *phy, bool enable) +{ + void __iomem *base = phy->base; + u32 data; + + data = dsi_phy_read(base + REG_DSI_7nm_PHY_CMN_LANE_CTRL1); + if (enable) + data |= BIT(5) | BIT(6); + else + data &= ~(BIT(5) | BIT(6)); + dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_LANE_CTRL1, data); + + return enable; +} + static void dsi_7nm_phy_disable(struct msm_dsi_phy *phy) { void __iomem *base = phy->base; @@ -1031,6 +1046,7 @@ const struct msm_dsi_phy_cfg dsi_phy_7nm_cfgs = { .pll_init = dsi_pll_7nm_init, .save_pll_state = dsi_7nm_pll_save_state, .restore_pll_state = dsi_7nm_pll_restore_state, + .set_continuous_clock = dsi_7nm_set_continuous_clock, }, .min_pll_rate = 600000000UL, #ifdef CONFIG_64BIT @@ -1057,6 +1073,7 @@ const struct msm_dsi_phy_cfg dsi_phy_7nm_8150_cfgs = { .pll_init = dsi_pll_7nm_init, .save_pll_state = dsi_7nm_pll_save_state, .restore_pll_state = dsi_7nm_pll_restore_state, + .set_continuous_clock = dsi_7nm_set_continuous_clock, }, .min_pll_rate = 1000000000UL, .max_pll_rate = 3500000000UL, |