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ARM: dts: imx53-qsb: select open-drain mode for i2c1 pads 

Both imx53-qsb and imx53-qsrb don't have external pull-up resistors
on the I2C1 SCL and SDA lines populated. Select open-drain mode and
enable the internal pull-up for both.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
This commit is contained in:
Lucas Stach 2015-06-19 18:09:50 +02:00 committed by Shawn Guo
parent 97dae8590f
commit fb00ff4c30
2 changed files with 4 additions and 15 deletions
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5
arch/arm/boot/dts/imx53-qsb-common.dtsi
View File

@ -228,10 +228,11 @@ MX53_PAD_FEC_TXD0__FEC_TDATA_0 0x80000000
>;
};
/* open drain */
pinctrl_i2c1: i2c1grp {
fsl,pins = <
MX53_PAD_CSI0_DAT8__I2C1_SDA 0xc0000000
MX53_PAD_CSI0_DAT9__I2C1_SCL 0xc0000000
MX53_PAD_CSI0_DAT8__I2C1_SDA 0x400001ec
MX53_PAD_CSI0_DAT9__I2C1_SCL 0x400001ec
>;
};

14
arch/arm/boot/dts/imx53-qsrb.dts
View File

@ -20,15 +20,7 @@ / {
};
&iomuxc {
i2c1 {
/* open drain */
pinctrl_i2c1_qsrb: i2c1grp-1 {
fsl,pins = <
MX53_PAD_CSI0_DAT8__I2C1_SDA 0x400001ec
MX53_PAD_CSI0_DAT9__I2C1_SCL 0x400001ec
>;
};
imx53-qsrb {
pinctrl_pmic: pmicgrp {
fsl,pins = <
MX53_PAD_CSI0_DAT5__GPIO5_23 0x1e4 /* IRQ */
@ -38,10 +30,6 @@ MX53_PAD_CSI0_DAT5__GPIO5_23 0x1e4 /* IRQ */
};
&i2c1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c1_qsrb>;
status = "okay";
pmic: mc34708@8 {
compatible = "fsl,mc34708";
pinctrl-names = "default";