#ifndef __MACH_IMX8MQ_H #define __MACH_IMX8MQ_H #include <io.h> #include <mach/generic.h> #include <mach/imx8mq-regs.h> #include <mach/revision.h> #include <linux/bitfield.h> #define IMX8MQ_ROM_VERSION_A0 0x800 #define IMX8MQ_ROM_VERSION_B0 0x83C #define MX8MQ_ANATOP_DIGPROG 0x6c #define DIGPROG_MAJOR GENMASK(23, 8) #define DIGPROG_MINOR GENMASK(7, 0) #define IMX8M_CPUTYPE_IMX8MQ 0x8240 static inline int imx8mq_cpu_revision(void) { void __iomem *anatop = IOMEM(MX8MQ_ANATOP_BASE_ADDR); uint32_t revision = FIELD_GET(DIGPROG_MINOR, readl(anatop + MX8MQ_ANATOP_DIGPROG)); if (revision == IMX_CHIP_REV_1_0) { uint32_t rom_version; /* * For B0 chip, the DIGPROG is not updated, still TO1.0. * we have to check ROM version further */ rom_version = readl(IOMEM(IMX8MQ_ROM_VERSION_A0)); if (rom_version != IMX_CHIP_REV_1_0) { rom_version = readl(IOMEM(IMX8MQ_ROM_VERSION_B0)); if (rom_version >= IMX_CHIP_REV_2_0) revision = IMX_CHIP_REV_2_0; } } return revision; } #endif /* __MACH_IMX8_H */