Commit b66ccc57 authored by Dmitry Baryshkov's avatar Dmitry Baryshkov Committed by Rob Clark
Browse files

drm/msm/dsi_phy_7nm: implement PHY disabling 



Implement phy_disable() callback to disable DSI PHY lanes and blocks
when phy is not used.

Signed-off-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Fixes: 1ef7c99d ("drm/msm/dsi: add support for 7nm DSI PHY/PLL")
Signed-off-by: default avatarRob Clark <robdclark@chromium.org>
parent a4ccc376

drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c

+22 −1
Original line number Diff line number Diff line
@@ -200,7 +200,28 @@ static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id, 


static void dsi_7nm_phy_disable(struct msm_dsi_phy *phy)

{

	/* TODO */

	void __iomem *base = phy->base;

	u32 data;



	DBG("");



	if (dsi_phy_hw_v4_0_is_pll_on(phy))

		pr_warn("Turning OFF PHY while PLL is on\n");



	dsi_phy_hw_v4_0_config_lpcdrx(phy, false);

	data = dsi_phy_read(base + REG_DSI_7nm_PHY_CMN_CTRL_0);



	/* disable all lanes */

	data &= ~0x1F;

	dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_CTRL_0, data);

	dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_LANE_CTRL0, 0);



	/* Turn off all PHY blocks */

	dsi_phy_write(base + REG_DSI_7nm_PHY_CMN_CTRL_0, 0x00);

	/* make sure phy is turned off */

	wmb();



	DBG("DSI%d PHY disabled", phy->id);

}



static int dsi_7nm_phy_init(struct msm_dsi_phy *phy)