doc/device-tree-bindings/fsp/fsp2/apollolake/fsp-m.txt

* Intel FSP-M configuration

Several Intel platforms require the execution of the Intel FSP (Firmware
Support Package) for initialization. The FSP consists of multiple parts, one
of which is the FSP-M (Memory initialization phase).

This binding applies to the FSP-M for the Intel Apollo Lake SoC.

The FSP-M is available on Github [1].
For detailed information on the FSP-M parameters see the documentation in
FSP/ApolloLakeFspBinPkg/Docs [2].

The properties of this binding are all optional. If no properties are set the
values of the FSP-M are used.

[1] https://github.com/IntelFsp/FSP
[2] https://github.com/IntelFsp/FSP/tree/master/ApolloLakeFspBinPkg/Docs

Optional properties:
- fspm,training-delay: Time taken to train DDR memory if there is no cached MRC
    data, in seconds. This is used to show a message if possible. For Chromebook
    Coral this is typically 21 seconds. For an APL board with 1GB of RAM, it may
    be only 6 seconds.
- fspm,serial-debug-port-address: Debug Serial Port Base address
- fspm,serial-debug-port-type: Debug Serial Port Type
  0: NONE
  1: I/O
  2: MMIO (default)
- fspm,serial-debug-port-device: Serial Port Debug Device
  0: SOC UART0
  1: SOC UART1
  2: SOC UART2 (default)
  3: External Device
- fspm,serial-debug-port-stride-size: Debug Serial Port Stride Size
  0: 1
  2: 4 (default)
- fspm,mrc-fast-boot: Memory Fast Boot
- fspm,igd: Integrated Graphics Device
- fspm,igd-dvmt50-pre-alloc: DVMT Pre-Allocated
  0x02: 64 MB (default)
  0x03: 96 MB
  0x04: 128 MB
  0x05: 160 MB
  0x06: 192 MB
  0x07: 224 MB
  0x08: 256 MB
  0x09: 288 MB
  0x0A: 320 MB
  0x0B: 352 MB
  0x0C: 384 MB
  0x0D: 416 MB
  0x0E: 448 MB
  0x0F: 480 MB
  0x10: 512 MB
- fspm,aperture-size: Aperture Size
  0x1: 128 MB (default)
  0x2: 256 MB
  0x3: 512 MB
- fspm,gtt-size: GTT Size
  0x1: 2 MB
  0x2: 4 MB
  0x3: 8 MB (default)
- fspm,primary-video-adaptor: Primary Display
  0x0: AUTO (default)
  0x2: IGD
  0x3: PCI
- fspm,package: Package
  0x0: SODIMM (default)
  0x1: BGA
  0x2: BGA mirrored (LPDDR3 only)
  0x3: SODIMM/UDIMM with Rank 1 Mirrored (DDR3L)
- fspm,profile: Profile
  0x01: WIO2_800_7_8_8
  0x02: WIO2_1066_9_10_10
  0x03: LPDDR3_1066_8_10_10
  0x04: LPDDR3_1333_10_12_12
  0x05: LPDDR3_1600_12_15_15
  0x06: LPDDR3_1866_14_17_17
  0x07: LPDDR3_2133_16_20_20
  0x08: LPDDR4_1066_10_10_10
  0x09: LPDDR4_1600_14_15_15
  0x0A: LPDDR4_2133_20_20_20
  0x0B: LPDDR4_2400_24_22_22
  0x0C: LPDDR4_2666_24_24_24
  0x0D: LPDDR4_2933_28_27_27
  0x0E: LPDDR4_3200_28_29_29
  0x0F: DDR3_1066_6_6_6
  0x10: DDR3_1066_7_7_7
  0x11: DDR3_1066_8_8_8
  0x12: DDR3_1333_7_7_7
  0x13: DDR3_1333_8_8_8
  0x14: DDR3_1333_9_9_9
  0x15: DDR3_1333_10_10_10
  0x16: DDR3_1600_8_8_8
  0x17: DDR3_1600_9_9_9
  0x18: DDR3_1600_10_10_10
  0x19: DDR3_1600_11_11_11 (default)
  0x1A: DDR3_1866_10_10_10
  0x1B: DDR3_1866_11_11_11
  0x1C: DDR3_1866_12_12_12
  0x1D: DDR3_1866_13_13_13
  0x1E: DDR3_2133_11_11_11
  0x1F: DDR3_2133_12_12_12
  0x20: DDR3_2133_13_13_13
  0x21: DDR3_2133_14_14_14
  0x22: DDR4_1333_10_10_10
  0x23: DDR4_1600_10_10_10
  0x24: DDR4_1600_11_11_11
  0x25: DDR4_1600_12_12_12
  0x26: DDR4_1866_12_12_12
  0x27: DDR4_1866_13_13_13
  0x28: DDR4_1866_14_14_14
  0x29: DDR4_2133_14_14_14
  0x2A: DDR4_2133_15_15_15
  0x2B: DDR4_2133_16_16_16
  0x2C: DDR4_2400_15_15_15
  0x2D: DDR4_2400_16_16_16
  0x2E: DDR4_2400_17_17_17
  0x2F: DDR4_2400_18_18_18
- fspm,memory-down: Memory Down
  0x0: No (default)
  0x1: Yes
  0x2: 1MD+SODIMM (for DDR3L only) ACRD
  0x3: 1x32 LPDDR4
- fspm,ddr3l-page-size: DDR3LPageSize
  0x1: 1KB (default)
  0x2: 2KB
- fspm,ddr3-lasr: DDR3LASR
- fspm,scrambler-support: ScramblerSupport
- fspm,interleaved-mode: InterleavedMode
- fspm,channel-hash-mask: ChannelHashMask
- fspm,fspm,slice-hash-mask: SliceHashMask
- fspm,channels-slices-enable: ChannelsSlices
- fspm,min-ref-rate2x-enable: MinRefRate2x
- fspm,dual-rank-support-enable: DualRankSupport
- fspm,rmt-mode: RmtMode
- fspm,memory-size-limit: MemorySizeLimit
- fspm,low-memory-max-value: LowMemoryMaxValue
- fspm,high-memory-max-value: HighMemoryMaxValue
- fspm,disable-fast-boot: FastBoot
- fspm,dimm0-spd-address: DIMM0 SPD Address
- fspm,dimm1-spd-address: DIMM1 SPD Address
- fspm,chX-rank-enable: Must be set to enable rank (X = 0-3)
- fspm,chX-device-width: DRAM device width per DRAM channel (X = 0-3)
  0: x8
  1: x16
  2: x32
  3: x64
- fspm,chX-dram-density: Must specify the DRAM device density (X = 0-3)
  0: 4Gb
  1: 6Gb
  2: 8Gb
  3: 12Gb
  4: 16Gb
  5: 2Gb
- fspm,chX-option: Channel options (X = 0-3)
- fspm,chX-odt-config: Channel Odt Config (X = 0-3)
- fspm,chX-mode2-n: Force 2N Mode (X = 0-3)
  0x0: Auto
  0x1: Force 2N CMD Timing Mode
- fspm,chX-odt-levels: Channel Odt Levels (X = 0-3)
  0: ODT Connected to SoC
  1: ODT held high
- fspm,rmt-check-run: RmtCheckRun
- fspm,rmt-margin-check-scale-high-threshold: RmtMarginCheckScaleHighThreshold
- fspm,ch-bit-swizzling: Bit_swizzling
- fspm,msg-level-mask: MsgLevelMask
- fspm,pre-mem-gpio-table-pin-num: PreMem GPIO Pin Number for each table
- fspm,pre-mem-gpio-table-ptr: PreMem GPIO Table Pointer
- fspm,pre-mem-gpio-table-entry-num: PreMem GPIO Table Entry Number
- fspm,enhance-port8xh-decoding: Enhance the port 8xh decoding
- fspm,spd-write-enable: SPD Data Write
- fspm,mrc-data-saving: MRC Training Data Saving
- fspm,oem-loading-base: OEM File Loading Address
- fspm,oem-file-name: OEM File Name to Load
- fspm,mrc-boot-data-ptr:
- fspm,emmc-trace-len: eMMC Trace Length
  0x0: Long
  0x1: Short
- fspm,skip-cse-rbp: Skip CSE RBP to support zero sized IBB
- fspm,npk-en: Npk Enable
   0: Disable
   1: Enable
   2: Debugger
   3: Auto (default)
- fspm,fw-trace-en: FW Trace Enable
- fspm,fw-trace-destination: FW Trace Destination
  1: NPK_TRACE_TO_MEMORY
  2: NPK_TRACE_TO_DCI
  3: NPK_TRACE_TO_BSSB
  4: NPK_TRACE_TO_PTI (default)
- fspm,recover-dump: NPK Recovery Dump
- fspm,msc0-wrap: Memory Region 0 Buffer WrapAround
  0: n0-warp
  1: n1-warp (default)
- fspm,msc1-wrap: Memory Region 1 Buffer WrapAround
  0: n0-warp
  1: n1-warp (default)
- fspm,msc0-size: Memory Region 0 Buffer Size
  0: 0MB (default)
  1: 1MB
  2: 8MB
  3: 64MB
  4: 128MB
  5: 256MB
  6: 512MB
  7: 1GB
- fspm,msc1-size: Memory Region 1 Buffer Size
  0: 0MB (default)
  1: 1MB
  2: 8MB
  3: 64MB
  4: 128MB
  5: 256MB
  6: 512MB
  7: 1GB
- fspm,pti-mode: PTI Mode
  0: 0ff
  1: x4 (default)
  2: x8
  3: x12
  4: x16
- fspm,pti-training: PTI Training
  0: off (default)
  1-6: 1-6
- fspm,pti-speed:
  0: full
  1: half
  2: quarter (default)
- fspm,punit-mlvl: Punit Message Level
  0:
  1: (default)
  2-4: 2-4
- fspm,pmc-mlvl: PMC Message Level
  0:
  1: (default)
  2-4: 2-4
- fspm,sw-trace-en: SW Trace Enable
- fspm,periodic-retraining-disable: Periodic Retraining Disable
- fspm,enable-reset-system: Enable Reset System
- fspm,enable-s3-heci2: Enable HECI2 in S3 resume path
- fspm,variable-nvs-buffer-ptr:
- fspm,start-timer-ticker-of-pfet-assert: PCIE SLOT Power Enable Assert Time - PFET
- fspm,rt-en: Real Time Enabling
- fspm,skip-pcie-power-sequence: Skip Pcie Power Sequence

Example:

&host_bridge {
	fspm,package = <PACKAGE_BGA>;
	fspm,profile = <PROFILE_LPDDR4_2400_24_22_22>;
	fspm,memory-down = <MEMORY_DOWN_YES>;
	fspm,scrambler-support = <1>;
	fspm,interleaved-mode = <INTERLEAVED_MODE_ENABLE>;
	fspm,channel-hash-mask = <0x36>;
	fspm,slice-hash-mask = <0x9>;
	fspm,low-memory-max-value = <2048>;
	fspm,ch0-rank-enable = <1>;
	fspm,ch0-device-width = <CHX_DEVICE_WIDTH_X16>;
	fspm,ch0-dram-density = <CHX_DEVICE_DENSITY_8GB>;
	fspm,ch0-option = <(CHX_OPTION_RANK_INTERLEAVING |
			   CHX_OPTION_BANK_ADDRESS_HASHING_ENABLE)>;
	fspm,ch0-odt-config = <CHX_ODT_CONFIG_DDR4_CA_ODT>;
	fspm,ch1-rank-enable = <1>;
	fspm,ch1-device-width = <CHX_DEVICE_WIDTH_X16>;
	fspm,ch1-dram-density = <CHX_DEVICE_DENSITY_8GB>;
	fspm,ch1-option = <(CHX_OPTION_RANK_INTERLEAVING |
			   CHX_OPTION_BANK_ADDRESS_HASHING_ENABLE)>;
	fspm,ch1-odt-config = <CHX_ODT_CONFIG_DDR4_CA_ODT>;
	fspm,ch2-rank-enable = <1>;
	fspm,ch2-device-width = <CHX_DEVICE_WIDTH_X16>;
	fspm,ch2-dram-density = <CHX_DEVICE_DENSITY_8GB>;
	fspm,ch2-option = <(CHX_OPTION_RANK_INTERLEAVING |
			   CHX_OPTION_BANK_ADDRESS_HASHING_ENABLE)>;
	fspm,ch2-odt-config = <CHX_ODT_CONFIG_DDR4_CA_ODT>;
	fspm,ch3-rank-enable = <1>;
	fspm,ch3-device-width = <CHX_DEVICE_WIDTH_X16>;
	fspm,ch3-dram-density = <CHX_DEVICE_DENSITY_8GB>;
	fspm,ch3-option = <(CHX_OPTION_RANK_INTERLEAVING |
			   CHX_OPTION_BANK_ADDRESS_HASHING_ENABLE)>;
	fspm,ch3-odt-config = <CHX_ODT_CONFIG_DDR4_CA_ODT>;
	fspm,fspm,skip-cse-rbp = <1>;

	fspm,ch-bit-swizzling = /bits/ 8 <
		/* LP4_PHYS_CH0A */

		/* DQA[0:7] pins of LPDDR4 module */
		6 7 5 4 3 1 0 2
		/* DQA[8:15] pins of LPDDR4 module */
		12 10 11 13 14 8 9 15
		/* DQB[0:7] pins of LPDDR4 module with offset of 16 */
		16 22 23 20 18 17 19 21
		/* DQB[7:15] pins of LPDDR4 module with offset of 16 */
		30 28 29 25 24 26 27 31

		/* LP4_PHYS_CH0B */
		/* DQA[0:7] pins of LPDDR4 module */
		7 3 5 2 6 0 1 4
		/* DQA[8:15] pins of LPDDR4 module */
		 9 14 12 13 10 11 8 15
		/* DQB[0:7] pins of LPDDR4 module with offset of 16 */
		20 22 23 16 19 17 18 21
		/* DQB[7:15] pins of LPDDR4 module with offset of 16 */
		28 24 26 27 29 30 31 25

		/* LP4_PHYS_CH1A */

		/* DQA[0:7] pins of LPDDR4 module */
		2 1 6 7 5 4 3 0
		/* DQA[8:15] pins of LPDDR4 module */
		11 10 8 9 12 15 13 14
		/* DQB[0:7] pins of LPDDR4 module with offset of 16 */
		17 23 19 16 21 22 20 18
		/* DQB[7:15] pins of LPDDR4 module with offset of 16 */
		31 29 26 25 28 27 24 30

		/* LP4_PHYS_CH1B */

		/* DQA[0:7] pins of LPDDR4 module */
		4 3 7 5 6 1 0 2
		/* DQA[8:15] pins of LPDDR4 module */
		15 9 8 11 14 13 12 10
		/* DQB[0:7] pins of LPDDR4 module with offset of 16 */
		20 23 22 21 18 19 16 17
		/* DQB[7:15] pins of LPDDR4 module with offset of 16 */
		25 28 30 31 26 27 24 29>;
};