Re: [PATCH v4 1/4] dt-bindindgs: i2c: qcom,i2c-geni: Document shared flag

Rob Herring
2024-11-15T17:31:58Z

On Wed, Nov 13, 2024 at 09:44:10PM +0530, Mukesh Kumar Savaliya wrote:
> Adds qcom,is-shared flag usage. Use this flag when I2C serial controller

Doesn't match the property name.

> needs to be shared in multiprocessor system(APPS,Modem,ADSP) environment.
>
> Two clients from different processors can share an I2C controller for same
> slave device OR their owned slave devices. Assume I2C Slave EEPROM device
> connected with I2C controller. Each client from ADSP SS and APPS Linux SS
> can perform i2c transactions.
>
> Transfer gets serialized by Lock TRE + DMA xfer + Unlock TRE at HW level.
>
> Signed-off-by: Mukesh Kumar Savaliya <quic_msavaliy@quicinc.com>
> ---
> Documentation/devicetree/bindings/i2c/qcom,i2c-geni-qcom.yaml | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/i2c/qcom,i2c-geni-qcom.yaml b/Documentation/devicetree/bindings/i2c/qcom,i2c-geni-qcom.yaml
> index 9f66a3bb1f80..fe36938712f7 100644
> --- a/Documentation/devicetree/bindings/i2c/qcom,i2c-geni-qcom.yaml
> +++ b/Documentation/devicetree/bindings/i2c/qcom,i2c-geni-qcom.yaml
> @@ -60,6 +60,10 @@ properties:
> power-domains:
> maxItems: 1
>
> + qcom,shared-se:

What is 'se'? Is that defined somewhere?

> + description: True if I2C controller is shared between two or more system processors.
> + type: boolean
> +
> reg:
> maxItems: 1
>
> --
> 2.25.1
>