MX6 RGMII Drive Strength

[inderjitbains]

Is DDR_SEL in IOMUXC_SW_PAD_CTL_GRP_DDR_TYPE_RGMII set to b11 in u-boot for Sabre SD, since NVCC_RGMII is 1.5V?  Or is it left at the default b10 (1.2V)?

For DSE in IOMUXC_SW_PAD_CTL_PAD_RGMII_RXC, the default is b110.  This is 37 ohms, too low for most boards.  Is it set anywhere in u-boot?

I did a grep for IOMUXC_SW_PAD_CTL_GRP_DDR_TYPE_RGMII and IOMUXC_SW_PAD_CTL_PAD_RGMII_RXC and found nothing.

[art]

In the latest Linux Yocto BSPs by NXP, where the device tree structure is used, the IOMUXC parameters of the pins are defined in the .dts file, that describes the device tree configuration. Try to check it there. Also, refer to the Chapter 2 of the attached document.

Have a great day,
Artur

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