Messages in this thread | | | Subject | Re: [PATCH] arm64: Add part number for Arm Cortex-A78 | From | Neeraj Upadhyay <> | Date | Wed, 17 Feb 2021 23:37:04 +0530 |
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On 2/17/2021 10:36 PM, Will Deacon wrote: > On Wed, Feb 17, 2021 at 10:14:11PM +0530, Neeraj Upadhyay wrote: >> Add the MIDR part number info for the Arm Cortex-A78. >> >> Signed-off-by: Neeraj Upadhyay <neeraju@codeaurora.org> >> --- >> arch/arm64/include/asm/cputype.h | 2 ++ >> 1 file changed, 2 insertions(+) >> >> diff --git a/arch/arm64/include/asm/cputype.h b/arch/arm64/include/asm/cputype.h >> index ef5b040..3aced88 100644 >> --- a/arch/arm64/include/asm/cputype.h >> +++ b/arch/arm64/include/asm/cputype.h >> @@ -72,6 +72,7 @@ >> #define ARM_CPU_PART_CORTEX_A76 0xD0B >> #define ARM_CPU_PART_NEOVERSE_N1 0xD0C >> #define ARM_CPU_PART_CORTEX_A77 0xD0D >> +#define ARM_CPU_PART_CORTEX_A78 0xD41 >> >> #define APM_CPU_PART_POTENZA 0x000 >> >> @@ -109,6 +110,7 @@ >> #define MIDR_CORTEX_A76 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A76) >> #define MIDR_NEOVERSE_N1 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_NEOVERSE_N1) >> #define MIDR_CORTEX_A77 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A77) >> +#define MIDR_CORTEX_A78 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A78) >> #define MIDR_THUNDERX MIDR_CPU_MODEL(ARM_CPU_IMP_CAVIUM, CAVIUM_CPU_PART_THUNDERX) >> #define MIDR_THUNDERX_81XX MIDR_CPU_MODEL(ARM_CPU_IMP_CAVIUM, CAVIUM_CPU_PART_THUNDERX_81XX) >> #define MIDR_THUNDERX_83XX MIDR_CPU_MODEL(ARM_CPU_IMP_CAVIUM, CAVIUM_CPU_PART_THUNDERX_83XX) > > This usually means there's an erratum to work around. What are you hiding ;) > > Will >
:) . This is needed for supporting implementation defined AMU counters in A78 [1]. However, there is no upstream user of it.
[1] https://www.spinics.net/lists/arm-kernel/msg856989.html
Thanks Neeraj
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