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Imaging ACPI config and upstream maxim-serdes GMSL #31

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cec7490
Imaging ACPI config and upstream maxim-serdes GMSL
changchingyew Oct 15, 2025
893862a
Added support of all 8x gmsl isx031 sensors
changchingyew Oct 22, 2025
1342b87
Update to link MAX96724 phy 2 or pad 6 to IPU mipi port 0
changchingyew Nov 5, 2025
1b47b1c
Update maxim-serdes v8 and remove static i2c adaptor
changchingyew Nov 19, 2025
216fa17
Update isx031 HID to registered value of INTC113C
changchingyew Dec 3, 2025
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62 changes: 62 additions & 0 deletions acpi/README.md
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# Imaging ACPI Configuration SSDT
## Overview
This directory contains imaging specific ACPI SSDT ASL sources

Table of sensor ASL sources
| File | Component |
|---------------|---------------------------------------------|
| isx031.asl | 4x D3 ISX031 sensor with MAX9295 serializer |

Table of common ASL include sources
| File | Component |
|---------------|-----------------------------|
| _ipu0.asl | IPU7 |
| _max96724.asl | MAX96724 GMSL2 deserializer |

## How to compile ACPI ASL source
1. Install acpica tools version 20250807 https://github.com/acpica/acpica/releases/tag/20250807
```sh
wget https://github.com/user-attachments/files/21674610/acpica-unix-20250807.tar.gz
tar zxf ../acpica-unix-20250807.tar.gz
cd acpica-unix-20250807/
make
sudo make install
```

2. Compile ASL source into AML file
```sh
iasl isx031.asl
```

## How to load imaging SSDT at boot time
1. Create initramfs containing AML file
```sh
mkdir -p kernel/firmware/acpi/
find kernel | cpio -H newc --create > img_ssdt.img
```

2. Copy initfamfs to /boot directory
```sh
sudo cp img_ssdt.img /boot
```

3. Add following line to /etc/default/grub for GRUB to load SSDT initramf
```
GRUB_EARLY_INITRD_LINUX_CUSTOM="img_ssdt.img"
```
4. Rebuild GRUB configuration
```sh
sudo update-grub
```

5. Reboot system and inspect loading of SSDT in kernel dmesg
```sh
dmesg | grep SSDT
```
You should see
```
[ 0.009303] ACPI: SSDT ACPI table found in initrd [kernel/firmware/acpi/isx031.aml][0x143d]
...
[ 0.009609] ACPI: Table Upgrade: install [SSDT- - IMG_PTL]
[ 0.009611] ACPI: SSDT 0x00000000678E6000 00143D (v02 IMG_PTL 20250920 INTL 20250404)
```
27 changes: 27 additions & 0 deletions acpi/_ipu.asl
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External (_SB.PC00.IPU0, DeviceObj)

Scope (\_SB.PC00.IPU0)
{
Name (_DSD, Package () /* method */
{
ToUUID("dbb8e3e6-5886-4ba6-8795-1319f52a966b"), /* Hierarchical Data Extension */,
Package () {
Package () { "mipi-img-port-0", "PRT0" },// mipi port 0 to DES0
Package () { "mipi-img-port-2", "PRT2" },// mipi port 2 to DES1
},
})
Name (PRT0, Package()
{
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package () {
Package () { "mipi-img-data-lanes", Package () { 1, 2, 3, 4 } }
},
})
Name (PRT2, Package()
{
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package () {
Package () { "mipi-img-data-lanes", Package () { 1, 2, 3, 4 } }
},
})
}
213 changes: 213 additions & 0 deletions acpi/_max96724.asl
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Device (DES0)
{
Name (_UID, Zero) // _UID: Unique ID
Method (_HID, 0, NotSerialized) // _HID: Hardware ID
{
Return ("INTC1139")
}
Method (_CID, 0, NotSerialized) // _CID: Compatible ID
{
Return ("INTC1139")
}
Method (_STA, 0, NotSerialized) // _STA: Status
{
Return (0x0F)
}
Name (_CRS, ResourceTemplate () // _CRS: Current Resource Settings
{
CSI2Bus(DeviceInitiated, 0, 6, "\\_SB.PC00.IPU0", 0,,,) // type 0 for CPHY, IPU0 local port 6 remote port 0
I2cSerialBusV2 (
0x0027, // SlaveAddress
ControllerInitiated, // SlaveMode
0x00061A80, // ConnectionSpeed
AddressingMode7Bit, // AddressingMode
"\\_SB.PC00.I2C1", // ResourceSource
0x00, // ResourceSourceIndex
ResourceConsumer, // ResourceUsage
, // DescriptorName
Exclusive, // ShareType
)
})

Name (_DEP, Package () // _DEP: Dependencies
{
\_SB.PC00.IPU0
})

Name (_DSD, Package ()
{
ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), /* Device Properties for _DSD */,
Package ()
{
Package () { "i2c-alias-pool", Package () { 0x44, 0x45, 0x46, 0x47 } },
},
ToUUID("dbb8e3e6-5886-4ba6-8795-1319f52a966b"), /* Hierarchical Data Extension */,
Package ()
{
Package () { "mipi-img-port-0", "PRT0" },
Package () { "mipi-img-port-1", "PRT1" },
Package () { "mipi-img-port-2", "PRT2" },
Package () { "mipi-img-port-3", "PRT3" },
Package () { "mipi-img-port-6", "PRT6" },
}
})
Name (PRT0, Package()
{
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package ()
{
Package () { "mipi-img-clock-lanes", 0 },
Package () { "mipi-img-data-lanes", Package () { 1, 2, 3, 4 } },
},
})

Name (PRT1, Package()
{
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package ()
{
Package () { "mipi-img-clock-lanes", 0 },
Package () { "mipi-img-data-lanes", Package() { 1, 2, 3, 4 } },
},

})

Name (PRT2, Package()
{
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package ()
{
Package () { "mipi-img-clock-lanes", 0 },
Package () { "mipi-img-data-lanes", Package () { 1, 2, 3, 4 } },
},
})

Name (PRT3, Package()
{
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package ()
{
Package () { "mipi-img-clock-lanes", 0 },
Package () { "mipi-img-data-lanes", Package() { 1, 2, 3, 4 } },
},

})

Name (PRT6, Package()
{
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package ()
{
Package () { "mipi-img-clock-lanes", 0 },
Package () { "mipi-img-data-lanes", Package() { 1, 2 } },
Package () { "mipi-img-link-frequencies", Package() { 1200000000 } }, // 1200 MHz
},
})
}

Device (DES1)
{
Name (_UID, Zero) // _UID: Unique ID
Method (_HID, 0, NotSerialized) // _HID: Hardware ID
{
Return ("INTC1139")
}
Method (_CID, 0, NotSerialized) // _CID: Compatible ID
{
Return ("INTC1139")
}
Method (_STA, 0, NotSerialized) // _STA: Status
{
Return (0x0F)
}
Name (_CRS, ResourceTemplate () // _CRS: Current Resource Settings
{
CSI2Bus(DeviceInitiated, 0, 4, "\\_SB.PC00.IPU0", 2,,,) // type 0 for CPHY, IPU0 local port 4 remote port 2
I2cSerialBusV2 (
0x0027, // SlaveAddress
ControllerInitiated, // SlaveMode
0x00061A80, // ConnectionSpeed
AddressingMode7Bit, // AddressingMode
"\\_SB.PC00.I2C2", // ResourceSource
0x00, // ResourceSourceIndex
ResourceConsumer, // ResourceUsage
, // DescriptorName
Exclusive, // ShareType
)
})

Name (_DEP, Package () // _DEP: Dependencies
{
\_SB.PC00.IPU0
})

Name (_DSD, Package ()
{
ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), /* Device Properties for _DSD */,
Package ()
{
Package () { "i2c-alias-pool", Package () { 0x44, 0x45, 0x46, 0x47 } },
},
ToUUID("dbb8e3e6-5886-4ba6-8795-1319f52a966b"), /* Hierarchical Data Extension */,
Package ()
{
Package () { "mipi-img-port-0", "PRT0" }, // to ser4
Package () { "mipi-img-port-1", "PRT1" }, // to ser5
Package () { "mipi-img-port-2", "PRT2" }, // to ser6
Package () { "mipi-img-port-3", "PRT3" }, // to ser7
Package () { "mipi-img-port-4", "PRT4" }, // to ipu0
}
})
Name (PRT0, Package()
{
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package ()
{
Package () { "mipi-img-clock-lanes", 0 },
Package () { "mipi-img-data-lanes", Package () { 1, 2, 3, 4 } },
},
})

Name (PRT1, Package()
{
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package ()
{
Package () { "mipi-img-clock-lanes", 0 },
Package () { "mipi-img-data-lanes", Package() { 1, 2, 3, 4 } },
},

})

Name (PRT2, Package()
{
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package ()
{
Package () { "mipi-img-clock-lanes", 0 },
Package () { "mipi-img-data-lanes", Package () { 1, 2, 3, 4 } },
},
})

Name (PRT3, Package()
{
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package ()
{
Package () { "mipi-img-clock-lanes", 0 },
Package () { "mipi-img-data-lanes", Package() { 1, 2, 3, 4 } },
},

})

Name (PRT4, Package()
{
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package ()
{
Package () { "mipi-img-clock-lanes", 0 },
Package () { "mipi-img-data-lanes", Package() { 1, 2 } },
Package () { "mipi-img-link-frequencies", Package() { 1200000000 } }, // 1200 MHz
},
})
}
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