matiamic commented on code in PR #16911:
URL: https://github.com/apache/nuttx/pull/16911#discussion_r2301523756
##########
include/net/if.h:
##########
@@ -172,6 +172,18 @@ struct mii_ioctl_data_s
uint16_t val_out; /* PHY output data */
};
+/* Structure passed to read from or write to the MMD
+ * registers via the SIOCxMMDREG ioctl commands.
+ */
+
+struct mmd_ioctl_data_s
+{
+ uint8_t phy_id; /* PHY device address */
+ uint8_t mmd; /* MMD number */
+ uint16_t addr; /* Address in the selected MMD */
+ uint16_t data; /* Input / Output data */
+};
Review Comment:
I think Linux uses `SIOCETHTOOL` exclusively to access MMD registers. The
SIOCxMMDREG op is not present in Linux.
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