linux-kernel - Re: [PATCH 4/6] soc: qcom: geni-se: add support for I2C Master Hub wrapper variant

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Date:   Wed, 16 Nov 2022 11:32:39 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Neil Armstrong <neil.armstrong@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Bjorn Andersson <andersson@...nel.org>
Cc:     linux-i2c@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH 4/6] soc: qcom: geni-se: add support for I2C Master Hub
 wrapper variant



On 16/11/2022 11:21, Neil Armstrong wrote:
> The I2C Master Hub is a stripped down version of the GENI Serial Engine
> QUP Wrapper Controller but only supporting I2C serial engines without
> DMA support.
> 
> This adds the clock list for the I2C Master Hub variant to a new desc
> struct then passes it through the I2C Master Hub compatible match data.
> 
> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>

Konrad
>   drivers/soc/qcom/qcom-geni-se.c | 10 ++++++++++
>   1 file changed, 10 insertions(+)
> 
> diff --git a/drivers/soc/qcom/qcom-geni-se.c b/drivers/soc/qcom/qcom-geni-se.c
> index f4f54d92a01a..8430a0192bb9 100644
> --- a/drivers/soc/qcom/qcom-geni-se.c
> +++ b/drivers/soc/qcom/qcom-geni-se.c
> @@ -930,8 +930,18 @@ static const struct geni_se_desc qup_desc = {
>   	.num_clks = ARRAY_SIZE(qup_clks),
>   };
>   
> +static const char * const i2c_master_hub_clks[] = {
> +	"s-ahb",
> +};
> +
> +static const struct geni_se_desc i2c_master_hub_desc = {
> +	.clks = i2c_master_hub_clks,
> +	.num_clks = ARRAY_SIZE(i2c_master_hub_clks),
> +};
> +
>   static const struct of_device_id geni_se_dt_match[] = {
>   	{ .compatible = "qcom,geni-se-qup", .data = &qup_desc },
> +	{ .compatible = "qcom,geni-se-i2c-master-hub", .data = &i2c_master_hub_desc },
>   	{}
>   };
>   MODULE_DEVICE_TABLE(of, geni_se_dt_match);
>