diff options
| author | Ken Lin <ken.lin@advantech.com.tw> | 2016-08-12 20:45:11 +0300 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2016-08-29 04:22:25 +0300 |
| commit | 118e81cb7307934870721312da5443913a14faa2 (patch) | |
| tree | 3571b4d0643c112060ad66b737e8fcf6f19682f4 /arch/arm | |
| parent | b5ca028fe9ba2090afdbb3a2e8362590adc42a9c (diff) | |
| download | linux-118e81cb7307934870721312da5443913a14faa2.tar.xz | |
ARM: dts: imx6q-bx50v3: configure unused pca953x pins
At power on, pca953x GPIO pins are configured as input and may cause
unexpected interrupts. Configure the unused pins as GPO low to
avoid unexpected interrupts.
Signed-off-by: Ken Lin <ken.lin@advantech.com.tw>
Signed-off-by: Akshay Bhat <akshay.bhat@timesys.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/boot/dts/imx6q-b450v3.dts | 16 | ||||
| -rw-r--r-- | arch/arm/boot/dts/imx6q-b650v3.dts | 9 | ||||
| -rw-r--r-- | arch/arm/boot/dts/imx6q-bx50v3.dtsi | 70 |
3 files changed, 95 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/imx6q-b450v3.dts b/arch/arm/boot/dts/imx6q-b450v3.dts index f0a2be5268e3..78bfc1a307d6 100644 --- a/arch/arm/boot/dts/imx6q-b450v3.dts +++ b/arch/arm/boot/dts/imx6q-b450v3.dts @@ -89,3 +89,19 @@ }; }; }; + +&pca9539 { + P04 { + gpio-hog; + gpios = <4 0>; + output-low; + line-name = "PCA9539-P04"; + }; + + P05 { + gpio-hog; + gpios = <5 0>; + output-low; + line-name = "PCA9539-P05"; + }; +}; diff --git a/arch/arm/boot/dts/imx6q-b650v3.dts b/arch/arm/boot/dts/imx6q-b650v3.dts index 33cb71acadcc..d85388725426 100644 --- a/arch/arm/boot/dts/imx6q-b650v3.dts +++ b/arch/arm/boot/dts/imx6q-b650v3.dts @@ -89,3 +89,12 @@ }; }; }; + +&pca9539 { + P05 { + gpio-hog; + gpios = <5 0>; + output-low; + line-name = "PCA9539-P05"; + }; +}; diff --git a/arch/arm/boot/dts/imx6q-bx50v3.dtsi b/arch/arm/boot/dts/imx6q-bx50v3.dtsi index cf3fd31e3406..e4a415fd899b 100644 --- a/arch/arm/boot/dts/imx6q-bx50v3.dtsi +++ b/arch/arm/boot/dts/imx6q-bx50v3.dtsi @@ -183,6 +183,76 @@ interrupt-controller; interrupt-parent = <&gpio2>; interrupts = <3 IRQ_TYPE_LEVEL_LOW>; + + P06 { + gpio-hog; + gpios = <6 0>; + output-low; + line-name = "PCA9539-P06"; + }; + + P07 { + gpio-hog; + gpios = <7 0>; + output-low; + line-name = "PCA9539-P07"; + }; + + P10 { + gpio-hog; + gpios = <8 0>; + output-low; + line-name = "PCA9539-P10"; + }; + + P11 { + gpio-hog; + gpios = <9 0>; + output-low; + line-name = "PCA9539-P11"; + }; + + P12 { + gpio-hog; + gpios = <10 0>; + output-low; + line-name = "PCA9539-P12"; + }; + + P13 { + gpio-hog; + gpios = <11 0>; + output-low; + line-name = "PCA9539-P13"; + }; + + P14 { + gpio-hog; + gpios = <12 0>; + output-low; + line-name = "PCA9539-P14"; + }; + + P15 { + gpio-hog; + gpios = <13 0>; + output-low; + line-name = "PCA9539-P15"; + }; + + P16 { + gpio-hog; + gpios = <14 0>; + output-low; + line-name = "PCA9539-P16"; + }; + + P17 { + gpio-hog; + gpios = <15 0>; + output-low; + line-name = "PCA9539-P17"; + }; }; }; |