AM625: SDHCI PHY block documentation

Part Number: AM625

Tool/software:

Dear TI engineers!

Is the documentation for SDHCI block and corresponding PHYs available publicly somewhere?

We would like to understand what ti,driver-strength-ohm Device Tree property of sdhci_am654 driver actually achieves in HW, and why the documented SDIOx_CTRL_DRV_STR bits of SDIOx_CTRL (TRM 14.2.1.1.1 CTRL_MMR Registers) do not apply.