The AM62x TRM (rev B) Table 12-245 (MMCSDi I/O Signals) shows the MMCi_CLK pin is an output pin, but the pimnux in devicetree configures MMC0/1_CLK as an input pin.

Fixedby:
https://git.ti.com/cgit/ti-u-boot/ti-u-boot/commit/?h=ti-u-boot-2026.01&id=284731d8f045e7664df404d35088f5bfa3b94971
https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel/commit/?h=ti-linux-6.18.y&id=6458b572317e4e7f393460e8239d2313ce1fc7f1
https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel/commit/?h=ti-linux-6.18.y&id=9b9b727316aa769896a923a9228c0e2f6d02739f
https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel/commit/?h=ti-linux-6.18.y&id=8708a4a135768e68463de0f3f93df92b1498a568
https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel/commit/?h=ti-linux-6.18.y&id=8d6034872bdc153e70ee50f2d42589b3be88692c
https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel/commit/?h=ti-linux-6.18.y&id=6be87c9534a0b8b4128434816fd01d87356a589c
https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel/commit/?h=ti-linux-6.18.y&id=fd6c4cf3a3962c2edc3ca6585dd41394a3fb89b0