From c317adb5441f211259d9bffdec970fe54421985c Mon Sep 17 00:00:00 2001
From: Alexander Stein <alexander.stein@ew.tq-group.com>
Date: Mon, 13 Dec 2021 14:36:24 +0100
Subject: drm/bridge: ti-sn65dsi83: Make enable GPIO optional
Git-commit: 5995aef006698bb639547a439f47492de5c37f05
Patch-mainline: v5.18-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
The enable signal may not be controllable by the kernel. Make it
optional.
This is a similar to commit bbda1704fc15 ("drm/bridge: ti-sn65dsi86: Make
enable GPIO optional")
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20211213133626.2498056-3-alexander.stein@ew.tq-group.com
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/bridge/ti-sn65dsi83.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi83.c b/drivers/gpu/drm/bridge/ti-sn65dsi83.c
index 945f08de45f1..065610edc37a 100644
--- a/drivers/gpu/drm/bridge/ti-sn65dsi83.c
+++ b/drivers/gpu/drm/bridge/ti-sn65dsi83.c
@@ -662,7 +662,8 @@ static int sn65dsi83_probe(struct i2c_client *client,
}
/* Put the chip in reset, pull EN line low, and assure 10ms reset low timing. */
- ctx->enable_gpio = devm_gpiod_get(ctx->dev, "enable", GPIOD_OUT_LOW);
+ ctx->enable_gpio = devm_gpiod_get_optional(ctx->dev, "enable",
+ GPIOD_OUT_LOW);
if (IS_ERR(ctx->enable_gpio))
return PTR_ERR(ctx->enable_gpio);
--
2.38.1