linux-kernel - [PATCH v3 8/9] MIPS: Unify Loongson1 PRID

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Message-Id: <20250716-loongson1-arch-v3-8-d160974d696b@gmail.com>
Date: Wed, 16 Jul 2025 19:25:17 +0800
From: Keguang Zhang via B4 Relay <devnull+keguang.zhang.gmail.com@...nel.org>
To: Thomas Bogendoerfer <tsbogend@...ha.franken.de>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Jiaxun Yang <jiaxun.yang@...goat.com>, 
 Keguang Zhang <keguang.zhang@...il.com>
Cc: linux-mips@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, 
 Philippe Mathieu-Daudé <philmd@...aro.org>
Subject: [PATCH v3 8/9] MIPS: Unify Loongson1 PRID_REV

From: Keguang Zhang <keguang.zhang@...il.com>

LS1B and LS1C share the same PRID value, so unify them
into a single definition: PRID_REV_LOONGSON1.

Reviewed-by: Philippe Mathieu-Daudé <philmd@...aro.org>
Signed-off-by: Keguang Zhang <keguang.zhang@...il.com>
---
 arch/mips/include/asm/cpu.h  | 3 +--
 arch/mips/kernel/cpu-probe.c | 6 +++---
 2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/arch/mips/include/asm/cpu.h b/arch/mips/include/asm/cpu.h
index ecb9854cb432..4163b22c0a9a 100644
--- a/arch/mips/include/asm/cpu.h
+++ b/arch/mips/include/asm/cpu.h
@@ -248,8 +248,7 @@
 #define PRID_REV_VR4181A		0x0070	/* Same as VR4122 */
 #define PRID_REV_VR4130			0x0080
 #define PRID_REV_34K_V1_0_2		0x0022
-#define PRID_REV_LOONGSON1B		0x0020
-#define PRID_REV_LOONGSON1C		0x0020	/* Same as Loongson-1B */
+#define PRID_REV_LOONGSON1		0x0020
 #define PRID_REV_LOONGSON2E		0x0002
 #define PRID_REV_LOONGSON2F		0x0003
 #define PRID_REV_LOONGSON2K_R1_0	0x0000
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index af7412549e6e..ca1ab765d4ac 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -1286,14 +1286,14 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu)
 		set_cpu_asid_mask(c, MIPS_ENTRYHI_ASID);
 		c->writecombine = _CACHE_UNCACHED_ACCELERATED;
 		break;
-	case PRID_IMP_LOONGSON_32:  /* Loongson-1 */
+	case PRID_IMP_LOONGSON_32:
 		decode_configs(c);
 
 		c->cputype = CPU_LOONGSON32;
 
 		switch (c->processor_id & PRID_REV_MASK) {
-		case PRID_REV_LOONGSON1B:
-			__cpu_name[cpu] = "Loongson 1B";
+		case PRID_REV_LOONGSON1:
+			__cpu_name[cpu] = "ICT Loongson-1";
 			break;
 		}
 

-- 
2.43.0