From 564da77168cf8afab90d4ffca9c7952c9136704a Mon Sep 17 00:00:00 2001
From: Marek Vasut <marex@denx.de>
Date: Mon, 5 Oct 2020 15:42:48 +0200
Subject: [PATCH] drm/exynos: Init the DSIM PHY in samsung_dsim_enable()
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In case the PHY is not initialized, do it in samsung_dsim_enable(),
otherwise the link configuration registers are not programmed at all.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Guido Günther <agx@sigxcpu.org>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Michael Tretter <m.tretter@pengutronix.de>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
To: dri-devel@lists.freedesktop.org
---
drivers/gpu/drm/bridge/samsung-dsim.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/bridge/samsung-dsim.c b/drivers/gpu/drm/bridge/samsung-dsim.c
index 8b79dd79c7510..ec32bf98f7d9f 100644
--- a/drivers/gpu/drm/bridge/samsung-dsim.c
+++ b/drivers/gpu/drm/bridge/samsung-dsim.c
@@ -1244,6 +1244,13 @@ static void samsung_dsim_enable(struct samsung_dsim *dsi)
pm_runtime_get_sync(dsi->dev);
dsi->state |= DSIM_STATE_ENABLED;
+ if (!(dsi->state & DSIM_STATE_INITIALIZED)) {
+ ret = samsung_dsim_init(dsi);
+ if (ret)
+ return;
+ dsi->state |= DSIM_STATE_INITIALIZED;
+ }
+
if (dsi->panel) {
ret = drm_panel_prepare(dsi->panel);
if (ret < 0)
--
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