linux-kernel - [PATCH AUTOSEL 4.19 041/205] ARM: dts: exynos: Fix HDMI-HPD line handling on Arndale

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Date:   Fri,  8 Nov 2019 06:35:08 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Andrzej Hajda <a.hajda@...sung.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Sasha Levin <sashal@...nel.org>, devicetree@...r.kernel.org
Subject: [PATCH AUTOSEL 4.19 041/205] ARM: dts: exynos: Fix HDMI-HPD line handling on Arndale

From: Andrzej Hajda <a.hajda@...sung.com>

[ Upstream commit 21cb5a27483a3cfdbcb7508a06a30c0a485e1211 ]

HDMI-HPD was set active low, moreover by default pincontrol chip sets
pull-down on the pin. As a result HDMI driver assumes TV is always
connected regardless of actual state.  The patch fixes it.

Signed-off-by: Andrzej Hajda <a.hajda@...sung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/arm/boot/dts/exynos5250-arndale.dts  | 4 +++-
 arch/arm/boot/dts/exynos5250-pinctrl.dtsi | 5 +++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/exynos5250-arndale.dts b/arch/arm/boot/dts/exynos5250-arndale.dts
index bb3fcd652b5d7..9c8ab4b7fb2cf 100644
--- a/arch/arm/boot/dts/exynos5250-arndale.dts
+++ b/arch/arm/boot/dts/exynos5250-arndale.dts
@@ -149,9 +149,11 @@
 };
 
 &hdmi {
+	pinctrl-names = "default";
+	pinctrl-0 = <&hdmi_hpd>;
 	status = "okay";
 	ddc = <&i2c_ddc>;
-	hpd-gpios = <&gpx3 7 GPIO_ACTIVE_LOW>;
+	hpd-gpios = <&gpx3 7 GPIO_ACTIVE_HIGH>;
 	vdd_osc-supply = <&ldo10_reg>;
 	vdd_pll-supply = <&ldo8_reg>;
 	vdd-supply = <&ldo8_reg>;
diff --git a/arch/arm/boot/dts/exynos5250-pinctrl.dtsi b/arch/arm/boot/dts/exynos5250-pinctrl.dtsi
index b25d520393b8b..d31a68672bfac 100644
--- a/arch/arm/boot/dts/exynos5250-pinctrl.dtsi
+++ b/arch/arm/boot/dts/exynos5250-pinctrl.dtsi
@@ -599,6 +599,11 @@
 		samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
 		samsung,pin-drv = <EXYNOS4_PIN_DRV_LV1>;
 	};
+
+	hdmi_hpd: hdmi-hpd {
+		samsung,pins = "gpx3-7";
+		samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
+	};
 };
 
 &pinctrl_1 {
-- 
2.20.1