https://community.nxp.com/t5/S32K/S32K388-Phy-init-stuck-in-LWIP-example/m-p/2170365#M52714 <P>Hello,</P><P>I am trying the "baremetal lwip s32k388" by using S32K388-EVB-Q289. Rev B</P><P>I want to use GMAC0 instead of&nbsp; GMAC1. So i change the configs to GMAC0.&nbsp;</P><P>But when debugging, i stuck in phy init() in while loop (establish link)</P><P>I cant find any information( ex. data sheet) about TJA1120, so i dont know how to test lwip ping by using GMAC0</P> Tue, 16 Sep 2025 10:02:27 GMT chansookang 2025-09-16T10:02:27Z https://community.nxp.com/t5/S32K/S32K388-Phy-init-stuck-in-LWIP-example/m-p/2170365#M52714 <P>Hello,</P><P>I am trying the "baremetal lwip s32k388" by using S32K388-EVB-Q289. Rev B</P><P>I want to use GMAC0 instead of&nbsp; GMAC1. So i change the configs to GMAC0.&nbsp;</P><P>But when debugging, i stuck in phy init() in while loop (establish link)</P><P>I cant find any information( ex. data sheet) about TJA1120, so i dont know how to test lwip ping by using GMAC0</P> Tue, 16 Sep 2025 10:02:27 GMT https://community.nxp.com/t5/S32K/S32K388-Phy-init-stuck-in-LWIP-example/m-p/2170365#M52714 chansookang 2025-09-16T10:02:27Z https://community.nxp.com/t5/S32K/S32K388-Phy-init-stuck-in-LWIP-example/m-p/2170384#M52715 <P>Hello&nbsp;<a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/246663">@chansookang</a>&nbsp;,</P> <P>What version of S32K3's RTD do you use?</P> <P>Please check that jumper J361 is closed:</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="PavelL_0-1758018295054.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/357127iBA85EFE759870FD5/image-size/medium?v=v2&amp;px=400" role="button" title="PavelL_0-1758018295054.png" alt="PavelL_0-1758018295054.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">PavelL_0-1758018295054.png</span></span></P> <P>&nbsp;</P> <P>Best regards,</P> <P>Pavel</P> Tue, 16 Sep 2025 10:25:24 GMT https://community.nxp.com/t5/S32K/S32K388-Phy-init-stuck-in-LWIP-example/m-p/2170384#M52715 PavelL 2025-09-16T10:25:24Z https://community.nxp.com/t5/S32K/S32K388-Phy-init-stuck-in-LWIP-example/m-p/2170808#M52742 Yes I closed jumper J361 but it still stucks.<BR />I’ll reply again with more details shortly<BR />Thank you Wed, 17 Sep 2025 04:53:16 GMT https://community.nxp.com/t5/S32K/S32K388-Phy-init-stuck-in-LWIP-example/m-p/2170808#M52742 chansookang 2025-09-17T04:53:16Z