drivers: ethernet: nxp_enet: Fused MAC address fixes

Add required initialisation of OCOTP. The IMXRT10XX
variants don't support fuseWords to be greater than 1.
MAC0 fuse map address is 0x22 instead of 0x620.
Fill in mac_addr buffer correctly.

Signed-off-by: Matthias Alleman <[email protected]>

Author: allemanm

drivers/ethernet/nxp_enet/eth_nxp_enet.c

@@ -641,20 +641,25 @@ static inline void nxp_enet_fused_mac(uint8_t *mac_addr)
 #ifdef CONFIG_SOC_FAMILY_NXP_IMXRT
 	uint32_t mac_addr_fuse[2] = {0};
 
-	OCOTP_ReadFuseShadowRegisterExt((OCOTP_Type *)OCOTP_BASE,
 #if defined(CONFIG_SOC_SERIES_IMXRT10XX)
-		0x620,
+	OCOTP_Init((OCOTP_Type *)OCOTP_BASE, CLOCK_GetIpgFreq());
+	/* OTP bank 4, word 2: MAC0 */
+	OCOTP_ReadFuseShadowRegisterExt((OCOTP_Type *)OCOTP_BASE,
+		0x22, &mac_addr_fuse[0], 1);
+	/* OTP bank 4, word 3: MAC1*/
+	OCOTP_ReadFuseShadowRegisterExt((OCOTP_Type *)OCOTP_BASE,
+		0x23, &mac_addr_fuse[1], 1);
 #elif defined(CONFIG_SOC_SERIES_IMXRT11XX)
-		0xA90,
+	OCOTP_Init((OCOTP_Type *)OCOTP_BASE, 0);
+	OCOTP_ReadFuseShadowRegisterExt((OCOTP_Type *)OCOTP_BASE,
+		0x28, &mac_addr_fuse[0], 2);
 #endif
-		mac_addr_fuse, 2);
-
 	mac_addr[0] = mac_addr_fuse[0] & 0x000000FF;
-	mac_addr[1] = mac_addr_fuse[0] & 0x0000FF00;
-	mac_addr[2] = mac_addr_fuse[0] & 0x00FF0000;
-	mac_addr[3] = mac_addr_fuse[0] & 0xFF000000;
-	mac_addr[4] = mac_addr_fuse[1] & 0x00FF;
-	mac_addr[5] = mac_addr_fuse[1] & 0xFF00;
+	mac_addr[1] = (mac_addr_fuse[0] & 0x0000FF00) >> 8;
+	mac_addr[2] = (mac_addr_fuse[0] & 0x00FF0000) >> 16;
+	mac_addr[3] = (mac_addr_fuse[0] & 0xFF000000) >> 24;
+	mac_addr[4] = (mac_addr_fuse[1] & 0x00FF);
+	mac_addr[5] = (mac_addr_fuse[1] & 0xFF00) >> 8;
 #else
 	ARG_UNUSED(mac_addr);
 #endif