From: manabian@gmail.com (Joachim Eastwood)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/3] ARM: at91: add pinctrl nodes to i2c-gpio on RM92000 DT
Date: Fri, 8 Feb 2013 02:25:55 +0100 [thread overview]
Message-ID: <1360286756-29705-3-git-send-email-manabian@gmail.com> (raw)
In-Reply-To: <1360286756-29705-1-git-send-email-manabian@gmail.com>
GPIO pins used by i2c-gpio must be set to multi drive
(open drain) to work properly.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
---
arch/arm/boot/dts/at91rm9200.dtsi | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/arm/boot/dts/at91rm9200.dtsi b/arch/arm/boot/dts/at91rm9200.dtsi
index a7031c6..5d3ed5a 100644
--- a/arch/arm/boot/dts/at91rm9200.dtsi
+++ b/arch/arm/boot/dts/at91rm9200.dtsi
@@ -383,6 +383,12 @@
<0 25 0x1 0x2 /* PA25 periph A with multi drive */
0 26 0x1 0x2>; /* PA26 periph A with multi drive */
};
+
+ pinctrl_twi_gpio: twi_gpio-0 {
+ atmel,pins =
+ <0 25 0x0 0x2 /* PA25 GPIO with multi drive */
+ 0 26 0x0 0x2>; /* PA26 GPIO with multi drive */
+ };
};
pioA: gpio at fffff400 {
@@ -520,6 +526,8 @@
i2c-gpio,sda-open-drain;
i2c-gpio,scl-open-drain;
i2c-gpio,delay-us = <2>; /* ~100 kHz */
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_twi_gpio>;
#address-cells = <1>;
#size-cells = <0>;
status = "disabled";
--
1.8.0
next prev parent reply other threads:[~2013-02-08 1:25 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-08 1:25 [PATCH 0/3] RM9200 DT i2c bindings and MPA 1600 support Joachim Eastwood
2013-02-08 1:25 ` [PATCH 1/3] ARM: at91: add TWI bindings to RM9200 DT Joachim Eastwood
2013-02-08 1:25 ` Joachim Eastwood [this message]
2013-02-08 1:25 ` [PATCH 3/3] ARM: at91: add MPA 1600 DT board Joachim Eastwood
2013-02-08 3:19 ` Kumar, Anil
2013-02-08 15:56 ` Joachim Eastwood
2013-03-15 10:37 ` [PATCH] ARM: at91/dt: gpio-keys: remove address-cells and size-cells properties Nicolas Ferre
2013-03-15 10:58 ` [PATCH 3/3] ARM: at91: add MPA 1600 DT board Nicolas Ferre
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