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arm: imx9: Update i.MX91 part number detection

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Change to not use NXP_RECOG fuse, but detect part number according
to feature disable fuses and SPEED fuse.

Signed-off-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Ye Li
2026-05-15 17:31:40 -03:00
committed by Fabio Estevam
parent 3ebee64e81
commit a8684df5ed
1 changed files with 5 additions and 16 deletions
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arch/arm/mach-imx/imx9/soc.c
+5 -16
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@@ -198,26 +198,15 @@ static u32 get_cpu_variant_type(u32 type)
bool npu_disable = !!(val & BIT(13));
bool core1_disable = !!(val & BIT(15));
u32 pack_9x9_fused = BIT(4) | BIT(5) | BIT(17) | BIT(19) | BIT(24);
u32 nxp_recog = (val & GENMASK(23, 16)) >> 16;
u32 speed = (val & GENMASK(11, 6)) >> 6;
/* For iMX91 */
if (type == MXC_CPU_IMX91) {
switch (nxp_recog) {
case 0x9:
case 0xA:
if ((val2 & pack_9x9_fused) == pack_9x9_fused)
type = MXC_CPU_IMX9111;
break;
case 0xD:
case 0xE:
type = MXC_CPU_IMX9121;
break;
case 0xF:
case 0x10:
type = MXC_CPU_IMX9101;
break;
default:
break; /* 9131 as default */
}
if (speed == 0xf) /* 800Mhz arm */
type += 1;
return type;
}