linux-kernel - Re: [Upstream] [PATCH 1/3] arm64: dts: ti: k3-am625-phyboard-lyra-rdk: Lower I2C1 frequency

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Message-ID: <bd5284ec-6f25-464a-9ee7-4c50496482f1@phytec.de>
Date:   Thu, 30 Nov 2023 13:07:09 +0100
From:   Wadim Egorov <w.egorov@...tec.de>
To:     Garrett Giordano <ggiordano@...tec.com>, <nm@...com>,
        <vigneshr@...com>, <kristo@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>
CC:     <devicetree@...r.kernel.org>, <upstream@...ts.phytec.de>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [Upstream] [PATCH 1/3] arm64: dts: ti:
 k3-am625-phyboard-lyra-rdk: Lower I2C1 frequency


Am 29.11.23 um 19:38 schrieb Garrett Giordano:
> The gpio-expander on i2c-1 has a maximum frequency of 100kHz. Update our
> main_i2c1 frequency to allow the nxp,pcf8574 gpio-expander to function
> properly.
>
> Signed-off-by: Garrett Giordano <ggiordano@...tec.com>

For all three patches,

Reviewed-by: Wadim Egorov <w.egorov@...tec.de>


> ---
>   arch/arm64/boot/dts/ti/k3-am625-phyboard-lyra-rdk.dts | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/ti/k3-am625-phyboard-lyra-rdk.dts b/arch/arm64/boot/dts/ti/k3-am625-phyboard-lyra-rdk.dts
> index a438baf542c2..171354b13e33 100644
> --- a/arch/arm64/boot/dts/ti/k3-am625-phyboard-lyra-rdk.dts
> +++ b/arch/arm64/boot/dts/ti/k3-am625-phyboard-lyra-rdk.dts
> @@ -187,7 +187,7 @@ cpsw3g_phy3: ethernet-phy@3 {
>   &main_i2c1 {
>   	pinctrl-names = "default";
>   	pinctrl-0 = <&main_i2c1_pins_default>;
> -	clock-frequency = <400000>;
> +	clock-frequency = <100000>;
>   	status = "okay";
>   
>   	gpio_exp: gpio-expander@21 {