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IDProjectCategoryView StatusLast Update
0004937UBootU-Bootpublic2021-10-05 15:07
Reporterderksen Assigned To 
PrioritynormalSeverityminorReproducibilityhave not tried
Status resolvedResolutionfixed 
Product Versionfsimx8mm-B2021.06 
Target Versionfsimx8mn-Y2021.09Fixed in Versionfsimx8mn-Y2021.09 
Summary0004937: Add correct fuse values for fsimx8mn
DescriptionAdd correct fuse values for fsimx8mn

The boot configuration fuses on i.MX8M-Nano are different to the fuses on
i.MX8M-Mini. For example the offset for the Secondary Boot image is set
in fuses, not by giving a Secondary Image Table in eMMC.


Register Bank/Word Mask Value Meaning
0x470 0x0001_0003 0x10000000 0x10000000 BT_FUSE_SEL
                       0x0000F000 0x00002000 USDHC3 eMMC 8-Bit
                       0x00000800 0x00000000 OVERRIDE_USDHC_BT_SEL
                       0x00000600 0x00000000 OVERRIDE_USDHC_BT_SEL_VAL
                Total 0x1000FE00 0x10002000

0x490 0x0002_0001 0xFF000000 0x00000000 USDHC_OVRD_PAD_SETTING_LOW8
                       0x00800000 0x00000000 RECOVERY_SDMMC_BOOT_DIS
                       0x00780000 0x00000000 IMG_CNTN_SET1_OFFSET: 1MB
                       0x00040000 0x00000000 USDHC_PAD_SION_EN
                       0x00010000 0x00000000 USDHC_DLL_EN
                       0x00008000 0x00000000 USDHC_DLL_SEL
                       0x00007F00 0x00000000 USDHC_DLL_DLY
                       0x00000080 0x00000000 USDHC_PWR_EN
                       0x00000040 0x00000000 EMMC_FAST_BT
                       0x00000030 0x00000000 SDMMC_BUS_WIDTH: 8 Bit
                       0x0000000C 0x00000000 SD_SPEED: eMMC Normal
                       0x00000002 0x00000000 USDHC_VOL_SEL: 3,3V I/O
                       0x00000001 0x00000000 USDHC_MFG_VOL_SEL: 3,3V I/O
                Total 0xFFFDFFFF 0x00000000

0x4A0 0x0002_0002 0x00000030 0x00000000 USDHC_PWR_INTERVAL
                       0x00000008 0x00000000 USDHC_PWR_DELAY
                       0x00000004 0x00000000 USDHC_PWR_POLARITY
                       0x00000002 0x00000000 USDHC_OVRD_PAD_SETTING_UP1
                       0x00000001 0x00000000 EMMC_FAST_BT_ACK
                Total 0x0000003F 0x00000000


Register Bank/Word Mask Value Meaning
0x470 0x0001_0003 0x10000000 0x10000000 BT_FUSE_SEL
                       0x0000F000 0x00004000 NAND 8-Bit 256 Pages
                       0x00000100 0x00000100 OVERRIDE_NAND_PG_PER_BLK
                       0x000000C0 0x00000040 64 Pages per Block
                Total 0x1000F1C0 0x10004140

0x4A0 0x0002_0002 0xFF000000 0x00000000 NAND_OVERRIDE_PAD_SETTING
                       0x00008000 0x00000000 BT_TOGGLE_MODE: Raw Nand
                       0x00006000 0x00000000 FCB_SEARCH_COUNT: 2
                       0x00001E00 0x00000000 NAND_TG_PREAMBLE_RD_LATENCY
                       0x00000100 0x00000000 NAND_RST_TIME
                Total 0xFF00FF00 0x00000000

0x4B0 0x0002_0003 0x0000F000 0x00000000 NAND_READ_RETRY_SEQ_ID: None
                       0x00000C00 0x00000000 NAND_ROW_ADDR_BYTES: 3
                       0x00000078 0x00000000 NAND_GPMI_DDR_DLL_VAL
                       0x00000003 0x00000000 NAND_CS_NUM: 1
                Total 0x0000FC7F 0x00000000
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