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From: Neil Armstrong <narmstrong@baylibre.com>
To: khilman@baylibre.com
Cc: Neil Armstrong <narmstrong@baylibre.com>,
	linux-amlogic@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH 1/3] arm64: dts: meson: g12a: add drive-strength hdmi ddc pins
Date: Mon, 20 May 2019 15:48:15 +0200	[thread overview]
Message-ID: <20190520134817.25435-2-narmstrong@baylibre.com> (raw)
In-Reply-To: <20190520134817.25435-1-narmstrong@baylibre.com>

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@baylibre.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


  reply	other threads:[~2019-05-20 13:48 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-20 13:48 [PATCH 0/3] arm64: dts: meson: g12a: add drive strength and hwrng Neil Armstrong
2019-05-20 13:48 ` Neil Armstrong [this message]
2019-05-20 17:51   ` [PATCH 1/3] arm64: dts: meson: g12a: add drive-strength hdmi ddc pins Martin Blumenstingl
2019-05-23 16:13     ` Kevin Hilman
2019-05-20 13:48 ` [PATCH 2/3] arm64: dts: meson: g12a: add drive strength for eth pins Neil Armstrong
2019-05-20 17:52   ` Martin Blumenstingl
2019-05-23 16:13     ` Kevin Hilman
2019-05-20 13:48 ` [PATCH 3/3] arm64: dts: meson: g12a: Add hwrng node Neil Armstrong
2019-05-20 17:45   ` Martin Blumenstingl
2019-05-21  8:31     ` Neil Armstrong
2019-05-23 16:13       ` Kevin Hilman

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