Realtek switch SoC docs

maple register: DMY_REG5

Details

Name
DMY_REG5
Offset
0144
Feature
MAC_CONTROL

Description

Extra GPIO MDIO bus control register.

Fields

Name LSB Bits Description
DUMMY 4 28
GPIO_PREAMBLE_SEL 2 2

Auxiliary MDIO/SMI frame preamble length.

  • 0: 16-bit
  • 1: 32-bit
  • 2: suppressed preamble
  • 3: 8-bit
EXTRA_GPIO_EN 1 1

Enable external GPIO (RTL8231) peripheral register shadowing. Must be cleared before changing other settings describing the extra GPIO chip.
GPIO_INTF_SEL 0 1

Interface type. 0 for I2C bus, 1 for MDIO bus.