diff options
| author | Ye Li <ye.li@nxp.com> | 2021-03-19 15:57:16 +0800 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2021-04-08 09:18:29 +0200 |
| commit | ea2b26fb1280a1009e6a59872d5e61d83c06422a (patch) | |
| tree | daa5830d4efc3c12f897f3e2de7311e6d361f590 /arch/arm/mach-imx/imx8m/soc.c | |
| parent | 0d77b4522f061705e238b9116c9321ed9630b0b7 (diff) | |
iMX8MQ: Recognize the B2 revision
i.MX8MQ B2 is using same value in OCOTP_READ_FUSE_DATA like B1, so
we have to check the ROM verision to distinguish the revision.
As we have checked the B1 rev for sticky bits work around in
secure boot. So it won't apply on B2.
Signed-off-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Diffstat (limited to 'arch/arm/mach-imx/imx8m/soc.c')
| -rw-r--r-- | arch/arm/mach-imx/imx8m/soc.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/arm/mach-imx/imx8m/soc.c b/arch/arm/mach-imx/imx8m/soc.c index f322488c00f..f3b9f2ddd61 100644 --- a/arch/arm/mach-imx/imx8m/soc.c +++ b/arch/arm/mach-imx/imx8m/soc.c @@ -410,7 +410,16 @@ u32 get_cpu_rev(void) * 0xff0055aa is magic number for B1. */ if (readl((void __iomem *)(OCOTP_BASE_ADDR + 0x40)) == 0xff0055aa) { - reg = CHIP_REV_2_1; + /* + * B2 uses same DIGPROG and OCOTP_READ_FUSE_DATA value with B1, + * so have to check ROM to distinguish them + */ + rom_version = readl((void __iomem *)ROM_VERSION_B0); + rom_version &= 0xff; + if (rom_version == CHIP_REV_2_2) + reg = CHIP_REV_2_2; + else + reg = CHIP_REV_2_1; } else { rom_version = readl((void __iomem *)ROM_VERSION_A0); |