netdev - Re: [PATCH 3/6] arm64: dts: qcom: ipq5332: Add MDIO device tree

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Message-ID: <afb2cc4d-efcd-4d99-ac78-a65ffa148c74@linaro.org>
Date: Thu, 11 Jan 2024 17:43:54 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Jie Luo <quic_luoj@...cinc.com>, Andrew Lunn <andrew@...n.ch>
Cc: andersson@...nel.org, konrad.dybcio@...aro.org, robh+dt@...nel.org,
 krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
 linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
 quic_kkumarcs@...cinc.com, quic_suruchia@...cinc.com, quic_soni@...cinc.com,
 quic_pavir@...cinc.com, quic_souravp@...cinc.com, quic_linchen@...cinc.com,
 quic_leiwei@...cinc.com
Subject: Re: [PATCH 3/6] arm64: dts: qcom: ipq5332: Add MDIO device tree

On 11/01/2024 16:59, Jie Luo wrote:
>>> +				mux_1 {
>>> +					pins = "gpio28";
>>> +					function = "mdio1";
>>> +					drive-strength = <8>;
>>> +					bias-pull-up;
>>> +				};
>>
>> I don't know why i'm asking this, because i don't really expect a
>> usable answer. What sort of MUX is this? Should you be using one of
>> the muxes in drivers/net/mdio/mdio-mux-* or something similar?
>>
>>      Andrew
> 
> Sorry for the confusion, the pin nodes are for the MDIO and MDC, these
> PINs are used by the dedicated hardware MDIO block in the SoC. I will 
> update the node name from mux_0 to MDC, mux_1 to MDIO, to make it clear. 
> The driver for this node is drivers/net/mdio/mdio-ipq4019.c, it is not 
> related to the mdio-mux-* code.

NAK. Run dtbs_check tests on your DTS first.

Best regards,
Krzysztof