From 0874cf8614c0ac0a3aa6f9420b39a5669fc2724e Mon Sep 17 00:00:00 2001 From: Rajeev Nandan Date: Mon, 31 Jan 2022 01:45:18 +0530 Subject: [PATCH] drm/msm/dsi: Add dsi phy tuning configuration support Add support for MSM DSI PHY tuning configuration. Current design is to support drive strength and drive level/amplitude tuning for 10nm PHY version, but this can be extended to other PHY versions. Signed-off-by: Rajeev Nandan Reviewed-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/1643573719-32095-3-git-send-email-quic_rajeevny@quicinc.com Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/msm/dsi/phy/dsi_phy.c | 6 ++++++ drivers/gpu/drm/msm/dsi/phy/dsi_phy.h | 4 ++++ 2 files changed, 10 insertions(+) diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c index 2027b38617ab2..31f3490a3bcfa 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c @@ -741,6 +741,12 @@ static int dsi_phy_driver_probe(struct platform_device *pdev) } } + if (phy->cfg->ops.parse_dt_properties) { + ret = phy->cfg->ops.parse_dt_properties(phy); + if (ret) + goto fail; + } + ret = dsi_phy_regulator_init(phy); if (ret) goto fail; diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h index 4c8257581bfc2..dc91b43d5a385 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h @@ -25,6 +25,7 @@ struct msm_dsi_phy_ops { void (*save_pll_state)(struct msm_dsi_phy *phy); int (*restore_pll_state)(struct msm_dsi_phy *phy); bool (*set_continuous_clock)(struct msm_dsi_phy *phy, bool enable); + int (*parse_dt_properties)(struct msm_dsi_phy *phy); }; struct msm_dsi_phy_cfg { @@ -82,6 +83,8 @@ struct msm_dsi_dphy_timing { #define DSI_PIXEL_PLL_CLK 1 #define NUM_PROVIDED_CLKS 2 +#define DSI_LANE_MAX 5 + struct msm_dsi_phy { struct platform_device *pdev; void __iomem *base; @@ -99,6 +102,7 @@ struct msm_dsi_phy { struct msm_dsi_dphy_timing timing; const struct msm_dsi_phy_cfg *cfg; + void *tuning_cfg; enum msm_dsi_phy_usecase usecase; bool regulator_ldo_mode; -- 2.30.2