VAR-SOM-AM62 rev changelog

VAR-SOM-AM62 changelog

VAR-SOM-AM62 (February 2024)

Hardware Modifications

Removal of RGMII TX CLK delay filters on both Ethernet interfaces.

The RGMII spec requires a skew between the clock and data at the receiver. The internal TI MAC already has this delay and an unsupported register bit that can be used to disable the delay. On previous assemblies, the delay was introduced on the SoM via an inline filter on the TX (MAC) clk of each Ethernet instance and the internal MAC delay disabled. While this delay control bit is present, its use is not recommended by TI, and as such, the delay should always be enabled in the MAC. Therefore, the filters have been bypassed starting with this SoM and thus require additional software patches for proper Ethernet functionality. See the tables below for more information.

Software Modifications

Variscite is updating all relevant software repositories and recommends impacted users to upgrade to the latest software version or to update their U-Boot, kernel, and meta-layers to the latest commit ID of the branch they are already based on.
The following are the relevant patches:

Release	U-Boot	Kernel	meta-layer(s)
Yocto Mickledore (kernel 6.1.36)	uboot-imx (lf_v2023.04_var02) imx8mp_var_dart: fix board_id detect for VAR-SOM-MX8M-PLUS 2.0 net:phy: mxl-8611x: configure rgmii rx clock delay imx8mp_var_som: add support for MaxLinear mxl8611x Ethernet PHY imx8mp_var_som: add support for booting wbe and 1.x device trees variscite: imx8_eeprom.h: add support for major and minor som revision variscite: imx8_eeprom: add VAR_EEPROM_F_WBE som feature dt-bindings: add device tree bindings and includes for mxl-8611x PHY phy: mxl-8611x: add driver for MaxLinear mxl-8611x PHYs	linux-imx (lf-6.1.y_var03) imx8mp-var-som: fix pinctrl for 802.15.4 imx8mp-var-som: fix compile warnings net:phy: mxl-8611x: configure rgmii rx clock delay imx8mp-var-som: add support for VAR-SOM-MX8M-PLUS 2.0 arm64: imx8mp-var-dart: sort Makefile entrees alphabetically dt-bindings: net: add bindings for MaxLinear MXL8611x PHY driver net:phy: mxl-8611x: use device tree properties to configure LEDs arm64: configs: imx8_var_defconfig: enable CONFIG_MAXLINEAR_8611X_PHY net: phy: mxl-8611: add support for MaxLinear MxL86110x/MxL86111x	meta-variscite-bsp-common var-mii: update to latest iw612-utils.bb: add imx8mp-var-dart to COMPATIBLE_MACHINE iw612-utils: install var_wifi_mod_para ot-daemon: add patch to make reset gpio optional iw612-utils: configure networkmanager to not manage wfd0 and uap0 meta-variscite-bsp-imx linux-variscite: update to latest u-boot-variscite: update to latest iw612-utils: iw612-bt: imx8mp-var-som: wait for hci interface to come up imx8mp-var-dart: add initial support for VAR-SOM-MX8M-PLUS v2.0 kernel-module-nxp-wlan: drop driver module configurations kernel-module-nxp-wlan: moal: use independent reset for sdio firmware firmware-nxp-wifi: update IW612 firmware to 18.99.2.p19.17 nxp-wlan-sdk: drop overrides in favor of NXP's latest
Yocto Mickledore (kernel 6.1.22)	Coming soon...	Coming soon...	Coming soon...
Yocto Kirkstone (kernel 5.15.71)	Coming soon...	Coming soon...	Coming soon...
Yocto Kirkstone (kernel 5.15.60)	Coming soon...	Coming soon...	Coming soon...
Yocto Hardknott (kernel 5.10.72)	Coming soon...	Coming soon...	Coming soon...
Yocto Hardknott (kernel 5.10.52)	Coming soon...	Coming soon...	Coming soon...
Yocto Hardknott (kernel 5.10.35)	Coming soon...	Coming soon...	Coming soon...
Yocto Gatesgarth (kernel 5.10.9)	Coming soon...	Coming soon...	Coming soon...
Yocto Zeus (kernel 5.4.70_2.3.2)	Coming soon...	Coming soon...	Coming soon...
Yocto Zeus (kernel 5.4.70_2.3.0)	Coming soon...	Coming soon...	Coming soon...
Android 13.0.0_1.0.0 (kernel 5.15.71)	Coming soon...	Coming soon...	Coming soon...
Android 12.0.0_1.0.0 (kernel 5.10.72)	Coming soon...	Coming soon...	Coming soon...
Android 11.0.0_2.6.0 (kernel 5.10.72)	Coming soon...	Coming soon...	Coming soon...
Android 11.0.0_2.2.0 (kernel 5.10.35)	Coming soon...	Coming soon...	Coming soon...
Android 11.0.0_1.2.0 (kernel 5.4.70)	Coming soon...	Coming soon...	Coming soon...
Android 10.0.0_2.6.0 (kernel 5.4.70)	Coming soon...	Coming soon...	Coming soon...
Bullseye (kernel 5.10.52_2.1.0)	Coming soon...	Coming soon...	Coming soon...
Bullseye (kernel 5.4.70_2.3.2)	Coming soon...	Coming soon...	Coming soon...
Bullseye (kernel 5.4.70_2.3.0)	Coming soon...	Coming soon...	Coming soon...
Boot2Qt Kirkstone (Qt 6.4.3, kernel 5.15.60)	Coming soon...	Coming soon...	Coming soon...
Boot2Qt Hardknott (Qt 6.2.4, kernel 5.10.72)	Coming soon...	Coming soon...	Coming soon...
Boot2Qt Zeus (Qt 5.15.2, kernel 5.4.70_2.3.2)	Coming soon...	Coming soon...	Coming soon...