mirror of https://gitee.com/openkylin/linux.git
179 lines
7.2 KiB
Plaintext
179 lines
7.2 KiB
Plaintext
* STMicroelectronics 10/100/1000/2500/10000 Ethernet (GMAC/XGMAC)
|
|
|
|
Required properties:
|
|
- compatible: Should be "snps,dwmac-<ip_version>", "snps,dwmac" or
|
|
"snps,dwxgmac-<ip_version>", "snps,dwxgmac".
|
|
For backwards compatibility: "st,spear600-gmac" is also supported.
|
|
- reg: Address and length of the register set for the 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 Rx exits the 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>;
|
|
};
|