There are several variants based on i.MX8MM, add the support in get_cpu_rev
Signed-off-by: Peng Fan peng.fan@nxp.com --- arch/arm/mach-imx/imx8m/soc.c | 57 +++++++++++++++++++++++++++++++++++-------- 1 file changed, 47 insertions(+), 10 deletions(-)
diff --git a/arch/arm/mach-imx/imx8m/soc.c b/arch/arm/mach-imx/imx8m/soc.c index 11251c5f9a..42b99945b4 100644 --- a/arch/arm/mach-imx/imx8m/soc.c +++ b/arch/arm/mach-imx/imx8m/soc.c @@ -130,25 +130,62 @@ static struct mm_region imx8m_mem_map[] = {
struct mm_region *mem_map = imx8m_mem_map;
+static u32 get_cpu_variant_type(u32 type) +{ + struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR; + struct fuse_bank *bank = &ocotp->bank[1]; + struct fuse_bank1_regs *fuse = + (struct fuse_bank1_regs *)bank->fuse_regs; + + u32 value = readl(&fuse->tester4); + + if (type == MXC_CPU_IMX8MM) { + switch (value & 0x3) { + case 2: + if (value & 0x1c0000) + return MXC_CPU_IMX8MMDL; + else + return MXC_CPU_IMX8MMD; + case 3: + if (value & 0x1c0000) + return MXC_CPU_IMX8MMSL; + else + return MXC_CPU_IMX8MMS; + default: + if (value & 0x1c0000) + return MXC_CPU_IMX8MML; + break; + } + } + + return type; +} + u32 get_cpu_rev(void) { struct anamix_pll *ana_pll = (struct anamix_pll *)ANATOP_BASE_ADDR; u32 reg = readl(&ana_pll->digprog); u32 type = (reg >> 16) & 0xff; + u32 major_low = (reg >> 8) & 0xff; u32 rom_version;
reg &= 0xff;
- if (reg == CHIP_REV_1_0) { - /* - * For B0 chip, the DIGPROG is not updated, still TO1.0. - * we have to check ROM version further - */ - rom_version = readl((void __iomem *)ROM_VERSION_A0); - if (rom_version != CHIP_REV_1_0) { - rom_version = readl((void __iomem *)ROM_VERSION_B0); - if (rom_version >= CHIP_REV_2_0) - reg = CHIP_REV_2_0; + /* i.MX8MM */ + if (major_low == 0x41) { + type = get_cpu_variant_type(MXC_CPU_IMX8MM); + } else { + if (reg == CHIP_REV_1_0) { + /* + * For B0 chip, the DIGPROG is not updated, still TO1.0. + * we have to check ROM version further + */ + rom_version = readl((void __iomem *)ROM_VERSION_A0); + if (rom_version != CHIP_REV_1_0) { + rom_version = readl((void __iomem *)ROM_VERSION_B0); + if (rom_version >= CHIP_REV_2_0) + reg = CHIP_REV_2_0; + } } }