Re: [PATCH] arm64: dts: qcom: ipq5018: Add pinctrl for MDIO bus

Jie Luo <[email protected]>
Newsgroups org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel
Message-ID <[email protected]> 

On 8/11/2026 10:00 PM, Kathiravan Thirumoorthy wrote:
> 
> On 8/11/2026 7:06 PM, Luo Jie wrote:
>> The external MDIO bus (mdio1) needs its MDC/MDIO lines configured via
>> TLMM pinctrl; without this the pins are left in their default state and
>> the bus does not function on boards that enable it.
> 
> Should we move the TLMM definitions to the board DTS file rather than
> keeping it in the SoC DTSI?

The MDC/MDIO pin-group definition is SoC-specific. On IPQ5018, only
these two TLMM pins support the MDIO interface—one for MDC and one for
MDIO—with no alternative pin assignments available. Therefore, the
definition can remain in the IPQ5018 pinctrl/SoC DTSI for reuse.
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