From mboxrd@z Thu Jan 1 00:00:00 1970 From: manabian@gmail.com (Joachim Eastwood) Date: Fri, 8 Feb 2013 02:25:55 +0100 Subject: [PATCH 2/3] ARM: at91: add pinctrl nodes to i2c-gpio on RM92000 DT In-Reply-To: <1360286756-29705-1-git-send-email-manabian@gmail.com> References: <1360286756-29705-1-git-send-email-manabian@gmail.com> Message-ID: <1360286756-29705-3-git-send-email-manabian@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org GPIO pins used by i2c-gpio must be set to multi drive (open drain) to work properly. Signed-off-by: Joachim Eastwood --- 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