linux-kernel - Re: [PATCH] arm64: zynqmp: Setting default i2c clock frequency to 400kHz

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Message-ID: <fb62288d-82b5-cde1-8fd2-a2cdd14d61f6@amd.com>
Date:   Mon, 10 Jul 2023 12:05:48 +0200
From:   Michal Simek <michal.simek@....com>
To:     linux-kernel@...r.kernel.org, monstr@...str.eu,
        michal.simek@...inx.com, git@...inx.com
Cc:     Varalaxmi Bingi <varalaxmi.bingi@....com>,
        Conor Dooley <conor+dt@...nel.org>,
        Harini Katakam <harini.katakam@....com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Michael Grzeschik <m.grzeschik@...gutronix.de>,
        Parth Gajjar <parth.gajjar@....com>,
        Piyush Mehta <piyush.mehta@...inx.com>,
        Radhey Shyam Pandey <radhey.shyam.pandey@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Robert Hancock <robert.hancock@...ian.com>,
        Tanmay Shah <tanmay.shah@....com>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] arm64: zynqmp: Setting default i2c clock frequency to
 400kHz



On 6/8/23 14:36, Michal Simek wrote:
> From: Varalaxmi Bingi <varalaxmi.bingi@....com>
> 
> Setting default i2c clock frequency for ZynqMP to maximum rate of 400kHz.
> Current default value is 100kHz.
> 
> Signed-off-by: Varalaxmi Bingi <varalaxmi.bingi@....com>
> Signed-off-by: Michal Simek <michal.simek@....com>
> ---
> 
>   arch/arm64/boot/dts/xilinx/zynqmp.dtsi | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
> index 394db49ac6cb..675b88190845 100644
> --- a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
> +++ b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
> @@ -648,6 +648,7 @@ i2c0: i2c@...20000 {
>   			status = "disabled";
>   			interrupt-parent = <&gic>;
>   			interrupts = <0 17 4>;
> +			clock-frequency = <400000>;
>   			reg = <0x0 0xff020000 0x0 0x1000>;
>   			#address-cells = <1>;
>   			#size-cells = <0>;
> @@ -659,6 +660,7 @@ i2c1: i2c@...30000 {
>   			status = "disabled";
>   			interrupt-parent = <&gic>;
>   			interrupts = <0 18 4>;
> +			clock-frequency = <400000>;
>   			reg = <0x0 0xff030000 0x0 0x1000>;
>   			#address-cells = <1>;
>   			#size-cells = <0>;

Applied.
M