linux-kernel - [PATCH 1/3] arm64: dts: meson: g12a: add drive-strength hdmi ddc pins

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Message-Id: <20190520134817.25435-2-narmstrong@baylibre.com>
Date:   Mon, 20 May 2019 15:48:15 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     khilman@...libre.com
Cc:     Neil Armstrong <narmstrong@...libre.com>,
        linux-amlogic@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] arm64: dts: meson: g12a: add drive-strength hdmi ddc pins

With the default boot settings, the DDC drive strength is too weak,
set the driver-strengh to 4mA to avoid errors on the DDC line.

Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
---
 arch/arm64/boot/dts/amlogic/meson-g12a.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi
index 5b4942c73e65..aa678d92238b 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi
@@ -327,6 +327,7 @@
 								 "hdmitx_sck";
 							function = "hdmitx";
 							bias-disable;
+							drive-strength-microamp = <4000>;
 						};
 					};
 
-- 
2.21.0