[PATCH v3 15/21] imx93: Add Low performance parts 9302/9301 support

[Peng Fan (OSS)]

From: Ye Li <ye.li at nxp.com>

Add support for iMX93 low performance parts 9302 and 9301 which
restrict to low drive voltage only.
The parts run A55 max speed at 900Mhz and M33 at 133Mhz, have NPU
and A55 core1 (9301) disabled.

Reviewed-by: Peng Fan <peng.fan at nxp.com>
Signed-off-by: Ye Li <ye.li at nxp.com>
Signed-off-by: Peng Fan <peng.fan at nxp.com>
---
 arch/arm/include/asm/arch-imx/cpu.h       | 2 ++
 arch/arm/include/asm/mach-imx/sys_proto.h | 5 ++++-
 arch/arm/mach-imx/imx9/Kconfig            | 1 +
 arch/arm/mach-imx/imx9/soc.c              | 6 +++++-
 drivers/cpu/imx8_cpu.c                    | 4 ++++
 5 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/arch/arm/include/asm/arch-imx/cpu.h b/arch/arm/include/asm/arch-imx/cpu.h
index cbd2717f97c..b0468a1a136 100644
--- a/arch/arm/include/asm/arch-imx/cpu.h
+++ b/arch/arm/include/asm/arch-imx/cpu.h
@@ -68,6 +68,8 @@
 #define MXC_CPU_IMX9321		0xC6 /* dummy ID */
 #define MXC_CPU_IMX9312		0xC7 /* dummy ID */
 #define MXC_CPU_IMX9311		0xC8 /* dummy ID */
+#define MXC_CPU_IMX9302		0xC9 /* dummy ID */
+#define MXC_CPU_IMX9301		0xCA /* dummy ID */
 
 #define MXC_SOC_MX6		0x60
 #define MXC_SOC_MX7		0x70
diff --git a/arch/arm/include/asm/mach-imx/sys_proto.h b/arch/arm/include/asm/mach-imx/sys_proto.h
index d93e095e191..c146a223b71 100644
--- a/arch/arm/include/asm/mach-imx/sys_proto.h
+++ b/arch/arm/include/asm/mach-imx/sys_proto.h
@@ -85,7 +85,8 @@ struct bd_info;
 #define is_imx93() (is_cpu_type(MXC_CPU_IMX93) || is_cpu_type(MXC_CPU_IMX9331) || \
 	is_cpu_type(MXC_CPU_IMX9332) || is_cpu_type(MXC_CPU_IMX9351) || \
 	is_cpu_type(MXC_CPU_IMX9322) || is_cpu_type(MXC_CPU_IMX9321) || \
-	is_cpu_type(MXC_CPU_IMX9312) || is_cpu_type(MXC_CPU_IMX9311))
+	is_cpu_type(MXC_CPU_IMX9312) || is_cpu_type(MXC_CPU_IMX9311) || \
+	is_cpu_type(MXC_CPU_IMX9302) || is_cpu_type(MXC_CPU_IMX9301))
 #define is_imx9351() (is_cpu_type(MXC_CPU_IMX9351))
 #define is_imx9332() (is_cpu_type(MXC_CPU_IMX9332))
 #define is_imx9331() (is_cpu_type(MXC_CPU_IMX9331))
@@ -93,6 +94,8 @@ struct bd_info;
 #define is_imx9321() (is_cpu_type(MXC_CPU_IMX9321))
 #define is_imx9312() (is_cpu_type(MXC_CPU_IMX9312))
 #define is_imx9311() (is_cpu_type(MXC_CPU_IMX9311))
+#define is_imx9302() (is_cpu_type(MXC_CPU_IMX9302))
+#define is_imx9301() (is_cpu_type(MXC_CPU_IMX9301))
 
 #define is_imxrt1020() (is_cpu_type(MXC_CPU_IMXRT1020))
 #define is_imxrt1050() (is_cpu_type(MXC_CPU_IMXRT1050))
diff --git a/arch/arm/mach-imx/imx9/Kconfig b/arch/arm/mach-imx/imx9/Kconfig
index e892da80fe8..63e75b6806e 100644
--- a/arch/arm/mach-imx/imx9/Kconfig
+++ b/arch/arm/mach-imx/imx9/Kconfig
@@ -30,6 +30,7 @@ choice
 
 config TARGET_IMX93_11X11_EVK
 	bool "imx93_11x11_evk"
+	select OF_BOARD_FIXUP
 	select IMX93
 	imply OF_UPSTREAM
 
diff --git a/arch/arm/mach-imx/imx9/soc.c b/arch/arm/mach-imx/imx9/soc.c
index e3bfc8d51c5..63647092782 100644
--- a/arch/arm/mach-imx/imx9/soc.c
+++ b/arch/arm/mach-imx/imx9/soc.c
@@ -191,6 +191,10 @@ static u32 get_cpu_variant_type(u32 type)
 	bool core1_disable = !!(val & BIT(15));
 	u32 pack_9x9_fused = BIT(4) | BIT(17) | BIT(19) | BIT(24);
 
+	/* Low performance 93 part */
+	if (((val >> 6) & 0x3F) == 0xE && npu_disable)
+		return core1_disable ? MXC_CPU_IMX9301 : MXC_CPU_IMX9302;
+
 	if ((val2 & pack_9x9_fused) == pack_9x9_fused)
 		type = MXC_CPU_IMX9322;
 
@@ -704,7 +708,7 @@ int ft_system_setup(void *blob, struct bd_info *bd)
 	if (fixup_thermal_trips(blob, "cpu-thermal"))
 		printf("Failed to update cpu-thermal trip(s)");
 
-	if (is_imx9351() || is_imx9331() || is_imx9321() || is_imx9311())
+	if (is_imx9351() || is_imx9331() || is_imx9321() || is_imx9311() || is_imx9301())
 		disable_cpu_nodes(blob, nodes_path, 1, 2);
 
 	if (is_voltage_mode(VOLT_LOW_DRIVE))
diff --git a/drivers/cpu/imx8_cpu.c b/drivers/cpu/imx8_cpu.c
index 60deca963a6..6c0a8c0cbe4 100644
--- a/drivers/cpu/imx8_cpu.c
+++ b/drivers/cpu/imx8_cpu.c
@@ -60,6 +60,10 @@ static const char *get_imx_type_str(u32 imxtype)
 		return "93(12)";/* iMX93 9x9 Dual core without NPU */
 	case MXC_CPU_IMX9311:
 		return "93(11)";/* iMX93 9x9 Single core without NPU */
+	case MXC_CPU_IMX9302:
+		return "93(02)";/* iMX93 900Mhz Low performance Dual core without NPU */
+	case MXC_CPU_IMX9301:
+		return "93(01)";/* iMX93 900Mhz Low performance Single core without NPU */
 	default:
 		return "??";
 	}

-- 
2.35.3