linux-kernel - Re: [PATCH] arm64: dts: qcom: ipq9574: enable fast mode for i2c3

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Message-ID: <qq47sv4wylmwtsx6r46lmyxypv7t2q5jx7wcahv2tzwu4wkd7n@qg76zy26ruco>
Date: Wed, 15 Jan 2025 13:12:27 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Manikanta Mylavarapu <quic_mmanikan@...cinc.com>
Cc: andersson@...nel.org, konradybcio@...nel.org, robh@...nel.org, 
	krzk+dt@...nel.org, conor+dt@...nel.org, linux-arm-msm@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, quic_srichara@...cinc.com, 
	quic_varada@...cinc.com
Subject: Re: [PATCH] arm64: dts: qcom: ipq9574: enable fast mode for i2c3

On Wed, Jan 15, 2025 at 04:31:42PM +0530, Manikanta Mylavarapu wrote:
> Configure the blsp1 i2c3 bus to operate at 400 kHz
> for fast mode.

This is usually a board property rather than an SoC one.

> 
> Signed-off-by: Manikanta Mylavarapu <quic_mmanikan@...cinc.com>
> ---
>  arch/arm64/boot/dts/qcom/ipq9574.dtsi | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/ipq9574.dtsi b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
> index 942290028972..b35df590a794 100644
> --- a/arch/arm64/boot/dts/qcom/ipq9574.dtsi
> +++ b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
> @@ -621,6 +621,7 @@ blsp1_i2c3: i2c@...8000 {
>  			clocks = <&gcc GCC_BLSP1_QUP4_I2C_APPS_CLK>,
>  				 <&gcc GCC_BLSP1_AHB_CLK>;
>  			clock-names = "core", "iface";
> +			clock-frequency = <400000>;
>  			assigned-clocks = <&gcc GCC_BLSP1_QUP4_I2C_APPS_CLK>;
>  			assigned-clock-rates = <50000000>;
>  			dmas = <&blsp_dma 18>, <&blsp_dma 19>;
> -- 
> 2.34.1
> 

-- 
With best wishes
Dmitry