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From: wens@csie.org (Chen-Yu Tsai)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 6/6] ARM: dts: sun9i: Enable uart4 for A80 Optimus board
Date: Tue, 28 Oct 2014 17:50:43 +0800	[thread overview]
Message-ID: <1414489843-2680-7-git-send-email-wens@csie.org> (raw)
In-Reply-To: <1414489843-2680-1-git-send-email-wens@csie.org>

The A80 Optimus board exposes uart4 on the GPIO expansion header.
Enable it so we can use it.

Also enable the internal pull-ups, as there doesn't seem to be
external pull-up resistors for pins on the expansion header.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
 arch/arm/boot/dts/sun9i-a80-optimus.dts | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm/boot/dts/sun9i-a80-optimus.dts b/arch/arm/boot/dts/sun9i-a80-optimus.dts
index 91eda76..105a324 100644
--- a/arch/arm/boot/dts/sun9i-a80-optimus.dts
+++ b/arch/arm/boot/dts/sun9i-a80-optimus.dts
@@ -71,6 +71,11 @@
 				allwinner,drive = <0>;
 				allwinner,pull = <0>;
 			};
+
+			uart4_pins_a: uart4 at 0 {
+				/* Enable internal pull-up */
+				allwinner,pull = <1>;
+			};
 		};
 
 		uart0: serial at 07000000 {
@@ -79,6 +84,12 @@
 			status = "okay";
 		};
 
+		uart4: serial at 07001000 {
+			pinctrl-names = "default";
+			pinctrl-0 = <&uart4_pins_a>;
+			status = "okay";
+		};
+
 		i2c3: i2c at 07003400 {
 			pinctrl-names = "default";
 			pinctrl-0 = <&i2c3_pins_a>;
-- 
2.1.1

      parent reply	other threads:[~2014-10-28  9:50 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-10-28  9:50 [PATCH 0/6] ARM: sun9i: Enable extra uarts, leds and i2c controllers Chen-Yu Tsai
2014-10-28  9:50 ` [PATCH 1/6] ARM: dts: sun9i: Add i2c controller nodes to a80 dtsi Chen-Yu Tsai
2014-10-28  9:50 ` [PATCH 2/6] ARM: dts: sun9i: Add i2c3 pinmux setting for A80 SoC Chen-Yu Tsai
2014-10-28  9:50 ` [PATCH 3/6] ARM: dts: sun9i: Enable i2c3 on A80 Optimus board Chen-Yu Tsai
2014-10-28  9:50 ` [PATCH 4/6] ARM: dts: sun9i: Add GPIO LEDs for " Chen-Yu Tsai
2014-10-28 11:04   ` [linux-sunxi] " Koen Kooi
2014-10-28 20:27     ` Maxime Ripard
2014-10-29  1:54       ` Chen-Yu Tsai
2014-10-28 20:16   ` Maxime Ripard
2014-10-28 21:19     ` Andreas Färber
2014-10-29  2:02       ` Chen-Yu Tsai
2014-10-30 15:53       ` Maxime Ripard
2014-10-29  1:50     ` Chen-Yu Tsai
2014-10-28  9:50 ` [PATCH 5/6] ARM: dts: sun9i: Add uart4 pinmux setting for A80 SoC Chen-Yu Tsai
2014-10-28  9:50 ` Chen-Yu Tsai [this message]

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