diff options
| author | Peng Fan <peng.fan@nxp.com> | 2019-07-22 01:25:05 +0000 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2019-10-08 16:35:16 +0200 |
| commit | e25dc290aa85ea3b68000295e352681acfa53617 (patch) | |
| tree | ea2f24b9b352688ea1e521f5b094ae7a7d065504 /arch/arm/mach-imx | |
| parent | eae4e0f3c10967386382b848ef80d9f8852d67a1 (diff) | |
i.MX7ULP: Add CPU revision check for B0
Since there is no register for CPU revision, we use ROM version to
check the A0 or B0 chip.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Diffstat (limited to 'arch/arm/mach-imx')
| -rw-r--r-- | arch/arm/mach-imx/mx7ulp/soc.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/arm/mach-imx/mx7ulp/soc.c b/arch/arm/mach-imx/mx7ulp/soc.c index 7119ee4a077..6c53aa106e7 100644 --- a/arch/arm/mach-imx/mx7ulp/soc.c +++ b/arch/arm/mach-imx/mx7ulp/soc.c @@ -18,10 +18,13 @@ struct imx_sec_config_fuse_t const imx_sec_config_fuse = { }; #endif +#define ROM_VERSION_ADDR 0x80 u32 get_cpu_rev(void) { - /* Temporally hard code the CPU rev to 0x73, rev 1.0. Fix it later */ - return (MXC_CPU_MX7ULP << 12) | (1 << 4); + /* Check the ROM version for cpu revision */ + u32 rom_version = readl((void __iomem *)ROM_VERSION_ADDR); + + return (MXC_CPU_MX7ULP << 12) | (rom_version & 0xFF); } #ifdef CONFIG_REVISION_TAG |