linux-kernel - Re: [PATCH v2 3/3] arm64: dts: ti: k3-j722s-evm: Update USB0 and USB1

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Date: Fri, 24 May 2024 11:14:16 +0530
From: Siddharth Vadapalli <s-vadapalli@...com>
To: Ravi Gunasekaran <r-gunasekaran@...com>
CC: <nm@...com>, <vigneshr@...com>, <afd@...com>, <robh@...nel.org>,
        <rogerq@...nel.org>, <kristo@...nel.org>, <krzk+dt@...nel.org>,
        <conor+dt@...nel.org>, <srk@...com>, <s-vadapalli@...com>,
        <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 3/3] arm64: dts: ti: k3-j722s-evm: Update USB0 and USB1

On Mon, May 13, 2024 at 05:14:43PM +0530, Ravi Gunasekaran wrote:
> The GPIO expander on the EVM allows the USB selection for Type-C
> port to either USB0 or USB1 via USB hub. By default, let the Type-C
> port select USB0 via the GPIO expander port P05.
> 
> Enable super-speed on USB1 by updating SerDes0 lane configuration.
> 
> Signed-off-by: Ravi Gunasekaran <r-gunasekaran@...com>
> ---
>  

[...]

> @@ -384,3 +399,43 @@
>  	status = "okay";
>  	bootph-all;
>  };
> +
> +&serdes0_ln_ctrl {
> +	idle-states = <J722S_SERDES0_LANE0_USB>,
> +		      <J722S_SERDES1_LANE0_PCIE0_LANE0>;

Patch 1/3 only added the Mux for Serdes0. So the idle-states property
for Serdes1 is incorrect and should be dropped.

[...]

Regards,
Siddharth.