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+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/qcom,ipq9574-ppe.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm IPQ packet process engine (PPE)
+
+maintainers:
+ - Luo Jie <quic_luoj@quicinc.com>
+ - Lei Wei <quic_leiwei@quicinc.com>
+ - Suruchi Agarwal <quic_suruchia@quicinc.com>
+ - Pavithra R <quic_pavir@quicinc.com>
+
+description: |
+ The Ethernet functionality in the PPE (Packet Process Engine) is comprised
+ of three components, the switch core, port wrapper and Ethernet DMA.
+
+ The Switch core in the IPQ9574 PPE has maximum of 6 front panel ports and
+ two FIFO interfaces. One of the two FIFO interfaces is used for Ethernet
+ port to host CPU communication using Ethernet DMA. The other is used
+ communicating to the EIP engine which is used for IPsec offload. On the
+ IPQ9574, the PPE includes 6 GMAC/XGMACs that can be connected with external
+ Ethernet PHY. Switch core also includes BM (Buffer Management), QM (Queue
+ Management) and SCH (Scheduler) modules for supporting the packet processing.
+
+ The port wrapper provides connections from the 6 GMAC/XGMACS to UNIPHY (PCS)
+ supporting various modes such as SGMII/QSGMII/PSGMII/USXGMII/10G-BASER. There
+ are 3 UNIPHY (PCS) instances supported on the IPQ9574.
+
+ Ethernet DMA is used to transmit and receive packets between the six Ethernet
+ ports and ARM host CPU.
+
+ The follow diagram shows the PPE hardware block along with its connectivity
+ to the external hardware blocks such clock hardware blocks (CMNPLL, GCC,
+ NSS clock controller) and Ethernet PCS/PHY blocks. For depicting the PHY
+ connectivity, one 4x1 Gbps PHY (QCA8075) and two 10 GBps PHYs are used as an
+ example.
+
+ +---------+
+ | 48 MHZ |
+ +----+----+
+ |(clock)
+ v
+ +----+----+
+ +------| CMN PLL |
+ | +----+----+
+ | |(clock)
+ | v
+ | +----+----+ +----+----+ (clock) +----+----+
+ | +---| NSSCC | | GCC |--------->| MDIO |
+ | | +----+----+ +----+----+ +----+----+
+ | | |(clock & reset) |(clock)
+ | | v v
+ | | +----+---------------------+--+----------+----------+---------+
+ | | | +-----+ |EDMA FIFO | | EIP FIFO|
+ | | | | SCH | +----------+ +---------+
+ | | | +-----+ | | |
+ | | | +------+ +------+ +-------------------+ |
+ | | | | BM | | QM | IPQ9574-PPE | L2/L3 Process | |
+ | | | +------+ +------+ +-------------------+ |
+ | | | | |
+ | | | +-------+ +-------+ +-------+ +-------+ +-------+ +-------+ |
+ | | | | MAC0 | | MAC1 | | MAC2 | | MAC3 | | XGMAC4| |XGMAC5 | |
+ | | | +---+---+ +---+---+ +---+---+ +---+---+ +---+---+ +---+---+ |
+ | | | | | | | | | |
+ | | +-----+---------+---------+---------+---------+---------+-----+
+ | | | | | | | |
+ | | +---+---------+---------+---------+---+ +---+---+ +---+---+
+ +--+---->| PCS0 | | PCS1 | | PCS2 |
+ |(clock) +---+---------+---------+---------+---+ +---+---+ +---+---+
+ | | | | | | |
+ | +---+---------+---------+---------+---+ +---+---+ +---+---+
+ +------->| QCA8075 PHY | | PHY4 | | PHY5 |
+ (clock) +-------------------------------------+ +-------+ +-------+
+
+properties:
+ compatible:
+ enum:
+ - qcom,ipq9574-ppe
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ items:
+ - description: PPE core clock
+ - description: PPE APB (Advanced Peripheral Bus) clock
+ - description: PPE IPE (Ingress Process Engine) clock
+ - description: PPE BM, QM and scheduler clock
+
+ clock-names:
+ items:
+ - const: ppe
+ - const: apb
+ - const: ipe
+ - const: btq
+
+ resets:
+ maxItems: 1
+ description: PPE reset, which is necessary before configuring PPE hardware
+
+ interrupts:
+ maxItems: 1
+ description: PPE switch miscellaneous interrupt
+
+ interconnects:
+ items:
+ - description: Bus interconnect path leading to PPE switch core function
+ - description: Bus interconnect path leading to PPE register access
+ - description: Bus interconnect path leading to QoS generation
+ - description: Bus interconnect path leading to timeout reference
+ - description: Bus interconnect path leading to NSS NOC from memory NOC
+ - description: Bus interconnect path leading to memory NOC from NSS NOC
+ - description: Bus interconnect path leading to enhanced memory NOC from NSS NOC
+
+ interconnect-names:
+ items:
+ - const: ppe
+ - const: ppe_cfg
+ - const: qos_gen
+ - const: timeout_ref
+ - const: nssnoc_memnoc
+ - const: memnoc_nssnoc
+ - const: memnoc_nssnoc_1
+
+ ethernet-dma:
+ type: object
+ additionalProperties: false
+ description:
+ EDMA (Ethernet DMA) is used to transmit packets between PPE and ARM
+ host CPU. There are 32 TX descriptor rings, 32 TX completion rings,
+ 24 RX descriptor rings and 8 RX fill rings supported.
+
+ properties:
+ clocks:
+ items:
+ - description: EDMA system clock
+ - description: EDMA APB (Advanced Peripheral Bus) clock
+
+ clock-names:
+ items:
+ - const: sys
+ - const: apb
+
+ resets:
+ maxItems: 1
+ description: EDMA reset
+
+ interrupts:
+ minItems: 65
+ maxItems: 65
+
+ interrupt-names:
+ minItems: 65
+ maxItems: 65
+ items:
+ oneOf:
+ - pattern: '^txcmpl_([1-2]?[0-9]|3[01])$'
+ - pattern: '^rxfill_[0-7]$'
+ - pattern: '^rxdesc_(1?[0-9]|2[0-3])$'
+ - const: misc
+ description:
+ Interrupts "txcmpl_[0-31]" are the Ethernet DMA TX completion ring interrupts.
+ Interrupts "rxfill_[0-7]" are the Ethernet DMA RX fill ring interrupts.
+ Interrupts "rxdesc_[0-23]" are the Ethernet DMA RX Descriptor ring interrupts.
+ Interrupt "misc" is the Ethernet DMA miscellaneous error interrupt.
+
+ required:
+ - clocks
+ - clock-names
+ - resets
+ - interrupts
+ - interrupt-names
+
+ ethernet-ports:
+ patternProperties:
+ "^ethernet-port@[1-6]+$":
+ type: object
+ unevaluatedProperties: false
+ $ref: ethernet-switch-port.yaml#
+
+ properties:
+ reg:
+ minimum: 1
+ maximum: 6
+ description: PPE Ethernet port ID
+
+ clocks:
+ items:
+ - description: Port MAC clock
+ - description: Port RX clock
+ - description: Port TX clock
+
+ clock-names:
+ items:
+ - const: mac
+ - const: rx
+ - const: tx
+
+ resets:
+ items:
+ - description: Port MAC reset
+ - description: Port RX reset
+ - description: Port TX reset
+
+ reset-names:
+ items:
+ - const: mac
+ - const: rx
+ - const: tx
+
+ required:
+ - reg
+ - clocks
+ - clock-names
+ - resets
+ - reset-names
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - resets
+ - interconnects
+ - interconnect-names
+ - ethernet-dma
+
+allOf:
+ - $ref: ethernet-switch.yaml
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/qcom,ipq9574-gcc.h>
+ #include <dt-bindings/clock/qcom,ipq9574-nsscc.h>
+ #include <dt-bindings/interconnect/qcom,ipq9574.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/reset/qcom,ipq9574-nsscc.h>
+
+ ethernet-switch@3a000000 {
+ compatible = "qcom,ipq9574-ppe";
+ reg = <0x3a000000 0xbef800>;
+ clocks = <&nsscc NSS_CC_PPE_SWITCH_CLK>,
+ <&nsscc NSS_CC_PPE_SWITCH_CFG_CLK>,
+ <&nsscc NSS_CC_PPE_SWITCH_IPE_CLK>,
+ <&nsscc NSS_CC_PPE_SWITCH_BTQ_CLK>;
+ clock-names = "ppe",
+ "apb",
+ "ipe",
+ "btq";
+ resets = <&nsscc PPE_FULL_RESET>;
+ interrupts = <GIC_SPI 498 IRQ_TYPE_LEVEL_HIGH>;
+ interconnects = <&nsscc MASTER_NSSNOC_PPE &nsscc SLAVE_NSSNOC_PPE>,
+ <&nsscc MASTER_NSSNOC_PPE_CFG &nsscc SLAVE_NSSNOC_PPE_CFG>,
+ <&gcc MASTER_NSSNOC_QOSGEN_REF &gcc SLAVE_NSSNOC_QOSGEN_REF>,
+ <&gcc MASTER_NSSNOC_TIMEOUT_REF &gcc SLAVE_NSSNOC_TIMEOUT_REF>,
+ <&gcc MASTER_MEM_NOC_NSSNOC &gcc SLAVE_MEM_NOC_NSSNOC>,
+ <&gcc MASTER_NSSNOC_MEMNOC &gcc SLAVE_NSSNOC_MEMNOC>,
+ <&gcc MASTER_NSSNOC_MEM_NOC_1 &gcc SLAVE_NSSNOC_MEM_NOC_1>;
+ interconnect-names = "ppe",
+ "ppe_cfg",
+ "qos_gen",
+ "timeout_ref",
+ "nssnoc_memnoc",
+ "memnoc_nssnoc",
+ "memnoc_nssnoc_1";
+
+ ethernet-dma {
+ clocks = <&nsscc NSS_CC_PPE_EDMA_CLK>,
+ <&nsscc NSS_CC_PPE_EDMA_CFG_CLK>;
+ clock-names = "sys",
+ "apb";
+ resets = <&nsscc EDMA_HW_RESET>;
+ interrupts = <GIC_SPI 363 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 364 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 365 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 366 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 367 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 368 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 369 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 370 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 371 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 372 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 373 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 374 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 375 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 376 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 377 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 378 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 379 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 380 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 381 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 382 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 383 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 384 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 509 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 508 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 507 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 506 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 505 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 504 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 503 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 502 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 501 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 500 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 355 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 356 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 357 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 358 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 359 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 360 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 361 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 362 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 331 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 332 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 333 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 334 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 335 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 336 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 337 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 338 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 339 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 340 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 341 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 342 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 343 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 344 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 345 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 346 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 347 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 348 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 349 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 350 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 351 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 352 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 353 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 354 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 499 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "txcmpl_0",
+ "txcmpl_1",
+ "txcmpl_2",
+ "txcmpl_3",
+ "txcmpl_4",
+ "txcmpl_5",
+ "txcmpl_6",
+ "txcmpl_7",
+ "txcmpl_8",
+ "txcmpl_9",
+ "txcmpl_10",
+ "txcmpl_11",
+ "txcmpl_12",
+ "txcmpl_13",
+ "txcmpl_14",
+ "txcmpl_15",
+ "txcmpl_16",
+ "txcmpl_17",
+ "txcmpl_18",
+ "txcmpl_19",
+ "txcmpl_20",
+ "txcmpl_21",
+ "txcmpl_22",
+ "txcmpl_23",
+ "txcmpl_24",
+ "txcmpl_25",
+ "txcmpl_26",
+ "txcmpl_27",
+ "txcmpl_28",
+ "txcmpl_29",
+ "txcmpl_30",
+ "txcmpl_31",
+ "rxfill_0",
+ "rxfill_1",
+ "rxfill_2",
+ "rxfill_3",
+ "rxfill_4",
+ "rxfill_5",
+ "rxfill_6",
+ "rxfill_7",
+ "rxdesc_0",
+ "rxdesc_1",
+ "rxdesc_2",
+ "rxdesc_3",
+ "rxdesc_4",
+ "rxdesc_5",
+ "rxdesc_6",
+ "rxdesc_7",
+ "rxdesc_8",
+ "rxdesc_9",
+ "rxdesc_10",
+ "rxdesc_11",
+ "rxdesc_12",
+ "rxdesc_13",
+ "rxdesc_14",
+ "rxdesc_15",
+ "rxdesc_16",
+ "rxdesc_17",
+ "rxdesc_18",
+ "rxdesc_19",
+ "rxdesc_20",
+ "rxdesc_21",
+ "rxdesc_22",
+ "rxdesc_23",
+ "misc";
+ };
+
+ ethernet-ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ethernet-port@1 {
+ reg = <1>;
+ phy-mode = "qsgmii";
+ managed = "in-band-status";
+ phy-handle = <&phy0>;
+ pcs-handle = <&pcs0_ch0>;
+ clocks = <&nsscc NSS_CC_PORT1_MAC_CLK>,
+ <&nsscc NSS_CC_PORT1_RX_CLK>,
+ <&nsscc NSS_CC_PORT1_TX_CLK>;
+ clock-names = "mac",
+ "rx",
+ "tx";
+ resets = <&nsscc PORT1_MAC_ARES>,
+ <&nsscc PORT1_RX_ARES>,
+ <&nsscc PORT1_TX_ARES>;
+ reset-names = "mac",
+ "rx",
+ "tx";
+ };
+
+ ethernet-port@2 {
+ reg = <2>;
+ phy-mode = "qsgmii";
+ managed = "in-band-status";
+ phy-handle = <&phy1>;
+ pcs-handle = <&pcs0_ch1>;
+ clocks = <&nsscc NSS_CC_PORT2_MAC_CLK>,
+ <&nsscc NSS_CC_PORT2_RX_CLK>,
+ <&nsscc NSS_CC_PORT2_TX_CLK>;
+ clock-names = "mac",
+ "rx",
+ "tx";
+ resets = <&nsscc PORT2_MAC_ARES>,
+ <&nsscc PORT2_RX_ARES>,
+ <&nsscc PORT2_TX_ARES>;
+ reset-names = "mac",
+ "rx",
+ "tx";
+ };
+
+ ethernet-port@3 {
+ reg = <3>;
+ phy-mode = "qsgmii";
+ managed = "in-band-status";
+ phy-handle = <&phy2>;
+ pcs-handle = <&pcs0_ch2>;
+ clocks = <&nsscc NSS_CC_PORT3_MAC_CLK>,
+ <&nsscc NSS_CC_PORT3_RX_CLK>,
+ <&nsscc NSS_CC_PORT3_TX_CLK>;
+ clock-names = "mac",
+ "rx",
+ "tx";
+ resets = <&nsscc PORT3_MAC_ARES>,
+ <&nsscc PORT3_RX_ARES>,
+ <&nsscc PORT3_TX_ARES>;
+ reset-names = "mac",
+ "rx",
+ "tx";
+ };
+
+ ethernet-port@4 {
+ reg = <4>;
+ phy-mode = "qsgmii";
+ managed = "in-band-status";
+ phy-handle = <&phy3>;
+ pcs-handle = <&pcs0_ch3>;
+ clocks = <&nsscc NSS_CC_PORT4_MAC_CLK>,
+ <&nsscc NSS_CC_PORT4_RX_CLK>,
+ <&nsscc NSS_CC_PORT4_TX_CLK>;
+ clock-names = "mac",
+ "rx",
+ "tx";
+ resets = <&nsscc PORT4_MAC_ARES>,
+ <&nsscc PORT4_RX_ARES>,
+ <&nsscc PORT4_TX_ARES>;
+ reset-names = "mac",
+ "rx",
+ "tx";
+ };
+
+ ethernet-port@5 {
+ reg = <5>;
+ phy-mode = "usxgmii";
+ managed = "in-band-status";
+ phy-handle = <&phy4>;
+ pcs-handle = <&pcs1_ch0>;
+ clocks = <&nsscc NSS_CC_PORT5_MAC_CLK>,
+ <&nsscc NSS_CC_PORT5_RX_CLK>,
+ <&nsscc NSS_CC_PORT5_TX_CLK>;
+ clock-names = "mac",
+ "rx",
+ "tx";
+ resets = <&nsscc PORT5_MAC_ARES>,
+ <&nsscc PORT5_RX_ARES>,
+ <&nsscc PORT5_TX_ARES>;
+ reset-names = "mac",
+ "rx",
+ "tx";
+ };
+
+ ethernet-port@6 {
+ reg = <6>;
+ phy-mode = "usxgmii";
+ managed = "in-band-status";
+ phy-handle = <&phy5>;
+ pcs-handle = <&pcs2_ch0>;
+ clocks = <&nsscc NSS_CC_PORT6_MAC_CLK>,
+ <&nsscc NSS_CC_PORT6_RX_CLK>,
+ <&nsscc NSS_CC_PORT6_TX_CLK>;
+ clock-names = "mac",
+ "rx",
+ "tx";
+ resets = <&nsscc PORT6_MAC_ARES>,
+ <&nsscc PORT6_RX_ARES>,
+ <&nsscc PORT6_TX_ARES>;
+ reset-names = "mac",
+ "rx",
+ "tx";
+ };
+ };
+ };
generated by cgit (git 2.34.1) at 2026-01-08 11:13:08 +0000