From f079f6d999cbf857f899732de680f2b62f245b8c Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Tue, 3 Jan 2017 19:45:43 +0530 Subject: drm/msm/dsi: Add PHY/PLL for 8x96 Extend the DSI PHY/PLL drivers to support the DSI 14nm PHY/PLL found on 8x96. These are picked up from the downstream driver. The PHY part is similar to the other DSI PHYs. The PLL driver requires some trickery so that one DSI PLL can drive both the DSIs (i.e, dual DSI mode). In the case of dual DSI mode. One DSI instance becomes the clock master, and other the clock slave. The master PLL's output (Byte and Pixel clock) is fed to both the DSI hosts/PHYs. When the DSIs are configured in dual DSI mode, the PHY driver communicates to the PLL driver using msm_dsi_pll_set_usecase() which instance is the master and which one is the slave. When setting rate, the master PLL also configures some of the slave PLL/PHY registers which need to be identical to the master's for correct dual DSI behaviour. There are 2 PLL post dividers that should have ideally been modelled as generic clk_divider clocks, but require some customization for dual DSI. In particular, when the master PLL's post-diviers are set, the slave PLL's post-dividers need to be set too. The clk_ops for these use clk_divider's helper ops and flags internally to prevent redundant code. Cc: Stephen Boyd Signed-off-by: Archit Taneja Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/dsi/phy/dsi_phy.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/gpu/drm/msm/dsi/phy/dsi_phy.c') diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c index 541d7dfa13c0..0c2eb9c9a1fc 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c @@ -390,6 +390,10 @@ static const struct of_device_id dsi_phy_dt_match[] = { #ifdef CONFIG_DRM_MSM_DSI_28NM_8960_PHY { .compatible = "qcom,dsi-phy-28nm-8960", .data = &dsi_phy_28nm_8960_cfgs }, +#endif +#ifdef CONFIG_DRM_MSM_DSI_14NM_PHY + { .compatible = "qcom,dsi-phy-14nm", + .data = &dsi_phy_14nm_cfgs }, #endif {} }; -- cgit v1.2.3