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MIPS: cpu-probe: Fix FPU detection on Ingenic JZ4760(B)

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[ Upstream commit fc52f92a653215fbd6bc522ac5311857b335e589 ]

Ingenic JZ4760 and JZ4760B do have a FPU, but the config registers don't
report it. Force the FPU detection in case the processor ID match the
JZ4760(B) one.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Paul Cercueil 2021-05-30 18:17:57 +01:00 committed by Greg Kroah-Hartman
parent 8f939b7957
commit 0903ac8f09
1 changed files with 5 additions and 0 deletions
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arch/mips/kernel/cpu-probe.c
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@ -1827,6 +1827,11 @@ static inline void cpu_probe_ingenic(struct cpuinfo_mips *c, unsigned int cpu)
*/
case PRID_COMP_INGENIC_D0:
c->isa_level &= ~MIPS_CPU_ISA_M32R2;
/* FPU is not properly detected on JZ4760(B). */
if (c->processor_id == 0x2ed0024f)
c->options |= MIPS_CPU_FPU;
fallthrough;
/*