* [PATCH] ARM: dts: imx53-qsb: select open-drain mode for i2c1 pads
@ 2015-06-19 16:09 Philipp Zabel
0 siblings, 0 replies; only message in thread
From: Philipp Zabel @ 2015-06-19 16:09 UTC (permalink / raw)
To: linux-arm-kernel
From: Lucas Stach <l.stach@pengutronix.de>
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>
---
arch/arm/boot/dts/imx53-qsb-common.dtsi | 5 +++--
arch/arm/boot/dts/imx53-qsrb.dts | 14 +-------------
2 files changed, 4 insertions(+), 15 deletions(-)
diff --git a/arch/arm/boot/dts/imx53-qsb-common.dtsi b/arch/arm/boot/dts/imx53-qsb-common.dtsi
index 181ae5e..43932bb 100644
--- a/arch/arm/boot/dts/imx53-qsb-common.dtsi
+++ b/arch/arm/boot/dts/imx53-qsb-common.dtsi
@@ -228,10 +228,11 @@
>;
};
+ /* 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
>;
};
diff --git a/arch/arm/boot/dts/imx53-qsrb.dts b/arch/arm/boot/dts/imx53-qsrb.dts
index 82d623d..66e47de 100644
--- a/arch/arm/boot/dts/imx53-qsrb.dts
+++ b/arch/arm/boot/dts/imx53-qsrb.dts
@@ -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 @@
};
&i2c1 {
- pinctrl-names = "default";
- pinctrl-0 = <&pinctrl_i2c1_qsrb>;
- status = "okay";
-
pmic: mc34708 at 8 {
compatible = "fsl,mc34708";
pinctrl-names = "default";
--
2.1.4
^ permalink raw reply related [flat|nested] only message in thread
only message in thread, other threads:[~2015-06-19 16:09 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2015-06-19 16:09 [PATCH] ARM: dts: imx53-qsb: select open-drain mode for i2c1 pads Philipp Zabel
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).