| * STMicroelectronics 10/100/1000 Ethernet driver (GMAC) | |
| Required properties: | |
| - compatible: Should be "snps,dwmac-<ip_version>", "snps,dwmac" | |
| For backwards compatibility: "st,spear600-gmac" is also supported. | |
| - reg: Address and length of the register set for the device | |
| - interrupt-parent: Should be the phandle for the interrupt controller | |
| that services interrupts for this device | |
| - interrupts: Should contain the STMMAC interrupts | |
| - interrupt-names: Should contain a list of interrupt names corresponding to | |
| the interrupts in the interrupts property, if available. | |
| Valid interrupt names are: | |
| - "macirq" (combined signal for various interrupt events) | |
| - "eth_wake_irq" (the interrupt to manage the remote wake-up packet detection) | |
| - "eth_lpi" (the interrupt that occurs when Tx or Rx enters/exits LPI state) | |
| - phy-mode: See ethernet.txt file in the same directory. | |
| - snps,reset-gpio gpio number for phy reset. | |
| - snps,reset-active-low boolean flag to indicate if phy reset is active low. | |
| - snps,reset-delays-us is triplet of delays | |
| The 1st cell is reset pre-delay in micro seconds. | |
| The 2nd cell is reset pulse in micro seconds. | |
| The 3rd cell is reset post-delay in micro seconds. | |
| Optional properties: | |
| - resets: Should contain a phandle to the STMMAC reset signal, if any | |
| - reset-names: Should contain the reset signal name "stmmaceth", if a | |
| reset phandle is given | |
| - max-frame-size: See ethernet.txt file in the same directory | |
| - clocks: If present, the first clock should be the GMAC main clock and | |
| the second clock should be peripheral's register interface clock. Further | |
| clocks may be specified in derived bindings. | |
| - clock-names: One name for each entry in the clocks property, the | |
| first one should be "stmmaceth" and the second one should be "pclk". | |
| - ptp_ref: this is the PTP reference clock; in case of the PTP is available | |
| this clock is used for programming the Timestamp Addend Register. If not | |
| passed then the system clock will be used and this is fine on some | |
| platforms. | |
| - tx-fifo-depth: See ethernet.txt file in the same directory | |
| - rx-fifo-depth: See ethernet.txt file in the same directory | |
| - snps,pbl Programmable Burst Length (tx and rx) | |
| - snps,txpbl Tx Programmable Burst Length. Only for GMAC and newer. | |
| If set, DMA tx will use this value rather than snps,pbl. | |
| - snps,rxpbl Rx Programmable Burst Length. Only for GMAC and newer. | |
| If set, DMA rx will use this value rather than snps,pbl. | |
| - snps,no-pbl-x8 Don't multiply the pbl/txpbl/rxpbl values by 8. | |
| For core rev < 3.50, don't multiply the values by 4. | |
| - snps,aal Address-Aligned Beats | |
| - snps,fixed-burst Program the DMA to use the fixed burst mode | |
| - snps,mixed-burst Program the DMA to use the mixed burst mode | |
| - snps,force_thresh_dma_mode Force DMA to use the threshold mode for | |
| both tx and rx | |
| - snps,force_sf_dma_mode Force DMA to use the Store and Forward | |
| mode for both tx and rx. This flag is | |
| ignored if force_thresh_dma_mode is set. | |
| - snps,en-tx-lpi-clockgating Enable gating of the MAC TX clock during | |
| TX low-power mode | |
| - snps,multicast-filter-bins: Number of multicast filter hash bins | |
| supported by this device instance | |
| - snps,perfect-filter-entries: Number of perfect filter entries supported | |
| by this device instance | |
| - snps,ps-speed: port selection speed that can be passed to the core when | |
| PCS is supported. For example, this is used in case of SGMII | |
| and MAC2MAC connection. | |
| - snps,tso: this enables the TSO feature otherwise it will be managed by | |
| MAC HW capability register. Only for GMAC4 and newer. | |
| - AXI BUS Mode parameters: below the list of all the parameters to program the | |
| AXI register inside the DMA module: | |
| - snps,lpi_en: enable Low Power Interface | |
| - snps,xit_frm: unlock on WoL | |
| - snps,wr_osr_lmt: max write outstanding req. limit | |
| - snps,rd_osr_lmt: max read outstanding req. limit | |
| - snps,kbbe: do not cross 1KiB boundary. | |
| - snps,blen: this is a vector of supported burst length. | |
| - snps,fb: fixed-burst | |
| - snps,mb: mixed-burst | |
| - snps,rb: rebuild INCRx Burst | |
| - mdio: with compatible = "snps,dwmac-mdio", create and register mdio bus. | |
| - Multiple RX Queues parameters: below the list of all the parameters to | |
| configure the multiple RX queues: | |
| - snps,rx-queues-to-use: number of RX queues to be used in the driver | |
| - Choose one of these RX scheduling algorithms: | |
| - snps,rx-sched-sp: Strict priority | |
| - snps,rx-sched-wsp: Weighted Strict priority | |
| - For each RX queue | |
| - Choose one of these modes: | |
| - snps,dcb-algorithm: Queue to be enabled as DCB | |
| - snps,avb-algorithm: Queue to be enabled as AVB | |
| - snps,map-to-dma-channel: Channel to map | |
| - Specifiy specific packet routing: | |
| - snps,route-avcp: AV Untagged Control packets | |
| - snps,route-ptp: PTP Packets | |
| - snps,route-dcbcp: DCB Control Packets | |
| - snps,route-up: Untagged Packets | |
| - snps,route-multi-broad: Multicast & Broadcast Packets | |
| - snps,priority: RX queue priority (Range: 0x0 to 0xF) | |
| - Multiple TX Queues parameters: below the list of all the parameters to | |
| configure the multiple TX queues: | |
| - snps,tx-queues-to-use: number of TX queues to be used in the driver | |
| - Choose one of these TX scheduling algorithms: | |
| - snps,tx-sched-wrr: Weighted Round Robin | |
| - snps,tx-sched-wfq: Weighted Fair Queuing | |
| - snps,tx-sched-dwrr: Deficit Weighted Round Robin | |
| - snps,tx-sched-sp: Strict priority | |
| - For each TX queue | |
| - snps,weight: TX queue weight (if using a DCB weight algorithm) | |
| - Choose one of these modes: | |
| - snps,dcb-algorithm: TX queue will be working in DCB | |
| - snps,avb-algorithm: TX queue will be working in AVB | |
| [Attention] Queue 0 is reserved for legacy traffic | |
| and so no AVB is available in this queue. | |
| - Configure Credit Base Shaper (if AVB Mode selected): | |
| - snps,send_slope: enable Low Power Interface | |
| - snps,idle_slope: unlock on WoL | |
| - snps,high_credit: max write outstanding req. limit | |
| - snps,low_credit: max read outstanding req. limit | |
| - snps,priority: TX queue priority (Range: 0x0 to 0xF) | |
| Examples: | |
| stmmac_axi_setup: stmmac-axi-config { | |
| snps,wr_osr_lmt = <0xf>; | |
| snps,rd_osr_lmt = <0xf>; | |
| snps,blen = <256 128 64 32 0 0 0>; | |
| }; | |
| mtl_rx_setup: rx-queues-config { | |
| snps,rx-queues-to-use = <1>; | |
| snps,rx-sched-sp; | |
| queue0 { | |
| snps,dcb-algorithm; | |
| snps,map-to-dma-channel = <0x0>; | |
| snps,priority = <0x0>; | |
| }; | |
| }; | |
| mtl_tx_setup: tx-queues-config { | |
| snps,tx-queues-to-use = <2>; | |
| snps,tx-sched-wrr; | |
| queue0 { | |
| snps,weight = <0x10>; | |
| snps,dcb-algorithm; | |
| snps,priority = <0x0>; | |
| }; | |
| queue1 { | |
| snps,avb-algorithm; | |
| snps,send_slope = <0x1000>; | |
| snps,idle_slope = <0x1000>; | |
| snps,high_credit = <0x3E800>; | |
| snps,low_credit = <0xFFC18000>; | |
| snps,priority = <0x1>; | |
| }; | |
| }; | |
| gmac0: ethernet@e0800000 { | |
| compatible = "st,spear600-gmac"; | |
| reg = <0xe0800000 0x8000>; | |
| interrupt-parent = <&vic1>; | |
| interrupts = <24 23 22>; | |
| interrupt-names = "macirq", "eth_wake_irq", "eth_lpi"; | |
| mac-address = [000000000000]; /* Filled in by U-Boot */ | |
| max-frame-size = <3800>; | |
| phy-mode = "gmii"; | |
| snps,multicast-filter-bins = <256>; | |
| snps,perfect-filter-entries = <128>; | |
| rx-fifo-depth = <16384>; | |
| tx-fifo-depth = <16384>; | |
| clocks = <&clock>; | |
| clock-names = "stmmaceth"; | |
| snps,axi-config = <&stmmac_axi_setup>; | |
| mdio0 { | |
| #address-cells = <1>; | |
| #size-cells = <0>; | |
| compatible = "snps,dwmac-mdio"; | |
| phy1: ethernet-phy@0 { | |
| }; | |
| }; | |
| snps,mtl-rx-config = <&mtl_rx_setup>; | |
| snps,mtl-tx-config = <&mtl_tx_setup>; | |
| }; |