On Thu, Oct 3, 2019 at 10:41 PM Andrey Smirnov <andrew.smirnov@xxxxxxxxx> wrote:
>
> Specify 'i2c-mux-idle-disconnect' for both I2C switches present on the
> board, since both are connected to the same parent bus and all of
> their children have the same I2C address.
>
> Fixes: ca4b4d373fcc ("ARM: dts: vf610: Add ZII SCU4 AIB board")
> Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
> Cc: Shawn Guo <shawnguo@xxxxxxxxxx>
> Cc: Chris Healy <cphealy@xxxxxxxxx>
> Cc: Cory Tusar <cory.tusar@xxxxxxxx>
> Cc: Jeff White <jeff.white@xxxxxxxx>
> Cc: Rick Ramstetter <rick@xxxxxxxxxxxxxxx>
> Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
> Cc: Fabio Estevam <festevam@xxxxxxxxx>
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Cc: devicetree@xxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> ---
> Shawn:
>
> If this is possible, I'd like this one to go into 5.4.
>
> Thanks,
> Andrey Smirnov
>
> arch/arm/boot/dts/vf610-zii-scu4-aib.dts | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm/boot/dts/vf610-zii-scu4-aib.dts b/arch/arm/boot/dts/vf610-zii-scu4-aib.dts
> index dc8a5f37a1ef..c8ebb23c4e02 100644
> --- a/arch/arm/boot/dts/vf610-zii-scu4-aib.dts
> +++ b/arch/arm/boot/dts/vf610-zii-scu4-aib.dts
> @@ -602,6 +602,7 @@
> #address-cells = <1>;
> #size-cells = <0>;
> reg = <0x70>;
> + i2c-mux-idle-disconnect;
>
> sff0_i2c: i2c@1 {
> #address-cells = <1>;
> @@ -640,6 +641,7 @@
> reg = <0x71>;
> #address-cells = <1>;
> #size-cells = <0>;
> + i2c-mux-idle-disconnect;
>
> sff5_i2c: i2c@1 {
> #address-cells = <1>;
> --
> 2.21.0
>
On an SCU4 AIB, this series is:
Tested-by: Chris Healy <cphealy@xxxxxxxxx>
