Re: [PATCH 8/8] arm64: dts: allwinner: orangepi-zero2: Add i2c aliases

["Jernej Škrabec" <jernej.skrabec@gmail.com>]

Dne torek, 10. november 2026 ob 06:37:02 Srednjeevropski standardni čas je Arun Iyengar via B4 Relay napisal(a):
> From: Arun Iyengar <aiyengar1990@gmail.com>
> 
> The I2C core numbers adapters after the "i2cN" aliases and hands out
> dynamic numbers, in probe order, to adapters without one. The Orange Pi
> Zero2 DT has no i2c aliases, so a TWI controller enabled by an overlay
> for the header pins gets whatever number is free when it probes: TWI3
> on header pins 3 and 5 does not show up as /dev/i2c-3, and the number
> changes with the set of enabled buses. The vendor manual and the
> vendor BSP name the buses after the controller.
> 
> Pin the numbering as the vendor BSP does: i2c0 to i2c4 are TWI0 to
> TWI4, i2c5 is R_TWI. Disabled controllers get no adapter, so nothing
> changes for buses that stay off.
> 
> Signed-off-by: Arun Iyengar <aiyengar1990@gmail.com>

NAK. 

Extension connector is not covered by board DT. Use overlays
if you want to use them.

Best regards,
Jernej

> ---
>  arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero2.dts | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero2.dts b/arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero2.dts
> index d5d39bac5915..98fc83291dc8 100644
> --- a/arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero2.dts
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero2.dts
> @@ -12,6 +12,15 @@
>  / {
>  	model = "OrangePi Zero2";
>  	compatible = "xunlong,orangepi-zero2", "allwinner,sun50i-h616";
> +
> +	aliases {
> +		i2c0 = &i2c0;
> +		i2c1 = &i2c1;
> +		i2c2 = &i2c2;
> +		i2c3 = &i2c3;
> +		i2c4 = &i2c4;
> +		i2c5 = &r_i2c;
> +	};
>  };
>  
>  &cpu0 {
> 
>