From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Paul Cercueil <paul@crapouillou.net>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
Sasha Levin <sashal@kernel.org>,
linux-mips@vger.kernel.org
Subject: [PATCH AUTOSEL 5.10 048/137] MIPS: cpu-probe: Fix FPU detection on Ingenic JZ4760(B)
Date: Tue, 6 Jul 2021 07:20:34 -0400 [thread overview]
Message-ID: <20210706112203.2062605-48-sashal@kernel.org> (raw)
In-Reply-To: <20210706112203.2062605-1-sashal@kernel.org>
From: Paul Cercueil <paul@crapouillou.net>
[ 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>
---
arch/mips/kernel/cpu-probe.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index e6ae2bcdbeda..067cb3eb1614 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -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;
/*
--
2.30.2
next prev parent reply other threads:[~2021-07-06 11:45 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210706112203.2062605-1-sashal@kernel.org>
2021-07-06 11:19 ` [PATCH AUTOSEL 5.10 012/137] hugetlb: clear huge pte during flush function on mips platform Sasha Levin
2021-07-06 11:20 ` Sasha Levin [this message]
2021-07-06 11:20 ` [PATCH AUTOSEL 5.10 049/137] MIPS: ingenic: Select CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER Sasha Levin
2021-07-06 11:21 ` [PATCH AUTOSEL 5.10 074/137] net: sgi: ioc3-eth: check return value after calling platform_get_resource() Sasha Levin
2021-07-06 11:21 ` [PATCH AUTOSEL 5.10 099/137] MIPS: add PMD table accounting into MIPS'pmd_alloc_one Sasha Levin
2021-07-06 11:22 ` [PATCH AUTOSEL 5.10 136/137] MIPS: loongsoon64: Reserve memory below starting pfn to prevent Oops Sasha Levin
2021-07-06 11:22 ` [PATCH AUTOSEL 5.10 137/137] MIPS: set mips32r5 for virt extensions Sasha Levin
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