Re: [PATCH] powerpc:dts:p2041rdb: enable gpio-expander
From: Scott Wood <oss@buserror.net>
Date: 2016-03-21 17:58:09
On Mon, 2016-03-21 at 11:48 +0100, Nora Björklund wrote:
quoted hunk ↗ jump to hunk
Enable the gpio-expander pca9672 on p2041rdb. The expander has been present on the p2041rdb all along, however not in the device tree. Signed-off-by: Nora Björklund <redacted> --- arch/powerpc/boot/dts/fsl/p2041rdb.dts | 7 +++++++ 1 file changed, 7 insertions(+)diff --git a/arch/powerpc/boot/dts/fsl/p2041rdb.dtsb/arch/powerpc/boot/dts/fsl/p2041rdb.dts index e9bd894..b1ee561 100644--- a/arch/powerpc/boot/dts/fsl/p2041rdb.dts +++ b/arch/powerpc/boot/dts/fsl/p2041rdb.dts@@ -134,6 +134,13 @@ }; }; + i2c@119100 { + gpio@22 { + compatible = "pcf8575"; + reg = <0x22>; + }; + };
The compatible should be "nxp,pcf8575" and it needs the gpio-controller and #gpio-cells properties. Is there an interrupt line connected to it? See Documentation/devicetree/bindings/gpio/gpio-pcf857x.txt -Scott