| Message ID | 20211019090020.11724-1-Meng.Li@windriver.com (mailing list archive) |
|---|---|
| State | Under Review |
| Delegated to: | Geert Uytterhoeven |
| Headers | show |
| Series | arch: arm64: dts: Set gpio5-pin9 as input by default | expand |
Quoting Meng Li (2021-10-19 10:00:20) > The gpio5-pin9 is used as the interrupt pin of i2c external > gpio chip, so set this pin as input by default. Is a GPIO hog the right way to do this? Shouldn't the other GPIO chip be modelled in DT and reference the gpio interrupt line from there in its interrupt property? I assume by 'external gpio chip' you mean one which is permanantly attached to the ULCB Kingfisher board, and not a custom addition? -- Regards Kieran > > Signed-off-by: Meng Li <Meng.Li@windriver.com> > --- > arch/arm64/boot/dts/renesas/ulcb-kf.dtsi | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi b/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi > index 202177706cde..8986a7e6e099 100644 > --- a/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi > +++ b/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi > @@ -205,6 +205,15 @@ > }; > }; > > +&gpio5 { > + gpio_exp_77_int { > + gpio-hog; > + gpios = <9 0>; > + input; > + line-name = "gpio-exp-77-int"; > + }; > +}; > + > &i2c4 { > i2cswitch4: i2c-switch@71 { > compatible = "nxp,pca9548"; > -- > 2.17.1 >
diff --git a/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi b/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi index 202177706cde..8986a7e6e099 100644 --- a/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi +++ b/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi @@ -205,6 +205,15 @@ }; }; +&gpio5 { + gpio_exp_77_int { + gpio-hog; + gpios = <9 0>; + input; + line-name = "gpio-exp-77-int"; + }; +}; + &i2c4 { i2cswitch4: i2c-switch@71 { compatible = "nxp,pca9548";
The gpio5-pin9 is used as the interrupt pin of i2c external gpio chip, so set this pin as input by default. Signed-off-by: Meng Li <Meng.Li@windriver.com> --- arch/arm64/boot/dts/renesas/ulcb-kf.dtsi | 9 +++++++++ 1 file changed, 9 insertions(+)