[PATCH 4/8] ARM: dts: bcm6846: Add I2C bus block

[Florian Fainelli]

On 9/1/2025 5:50 AM, Linus Walleij wrote:
> The BCM6846 has a STB I2C block.
> 
> Signed-off-by: Linus Walleij <linus.walleij at linaro.org>
> ---
>   arch/arm/boot/dts/broadcom/bcm6846.dtsi | 9 +++++++++
>   1 file changed, 9 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/broadcom/bcm6846.dtsi b/arch/arm/boot/dts/broadcom/bcm6846.dtsi
> index f5591a45d2e4ad64d8f95680aea327771825252b..ac5c810a92d76f1130d0caf0286d6401e0e7bbe6 100644
> --- a/arch/arm/boot/dts/broadcom/bcm6846.dtsi
> +++ b/arch/arm/boot/dts/broadcom/bcm6846.dtsi
> @@ -242,6 +242,15 @@ mdio: mdio at 2060 {
>   			status = "disabled";
>   		};
>   
> +		i2c0: i2c at 2100 {
> +			compatible = "brcm,brcmstb-i2c";

Historically the BCA SoCs have byte-sized FIFOs rather than word-sized 
FIFOs which is why the compatible string "brcm,brcmper-i2c" was defined. 
I assume this was changed at some point and this works correctly with 
the "brcm,brcmstb-i2c" compatible string.

Was there any I2C peripheral you could interface with?

> +			reg = <0x2100 0x60>;
> +			interrupts = <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>;
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			status = "disabled";
> +		};
> +
>   		pl081_dma: dma-controller at 59000 {
>   			compatible = "arm,pl081", "arm,primecell";
>   			// The magic B105F00D info is missing
> 

-- 
Florian