Since we will use these bindings on sunxi, bring them in from Linux 4.0-rc1. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Ian Campbell <ijc@hellion.org.uk>master
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* Allwinner EMAC ethernet controller |
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Required properties: |
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- compatible: should be "allwinner,sun4i-a10-emac" (Deprecated: |
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"allwinner,sun4i-emac") |
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- reg: address and length of the register set for the device. |
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- interrupts: interrupt for the device |
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- phy: see ethernet.txt file in the same directory. |
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- clocks: A phandle to the reference clock for this device |
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Example: |
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emac: ethernet@01c0b000 { |
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compatible = "allwinner,sun4i-a10-emac"; |
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reg = <0x01c0b000 0x1000>; |
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interrupts = <55>; |
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clocks = <&ahb_gates 17>; |
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phy = <&phy0>; |
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}; |
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* Allwinner A10 MDIO Ethernet Controller interface |
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Required properties: |
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- compatible: should be "allwinner,sun4i-a10-mdio" |
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(Deprecated: "allwinner,sun4i-mdio"). |
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- reg: address and length of the register set for the device. |
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Optional properties: |
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- phy-supply: phandle to a regulator if the PHY needs one |
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Example at the SoC level: |
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mdio@01c0b080 { |
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compatible = "allwinner,sun4i-a10-mdio"; |
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reg = <0x01c0b080 0x14>; |
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#address-cells = <1>; |
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#size-cells = <0>; |
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}; |
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And at the board level: |
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mdio@01c0b080 { |
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phy-supply = <®_emac_3v3>; |
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phy0: ethernet-phy@0 { |
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reg = <0>; |
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}; |
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}; |
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* Allwinner GMAC ethernet controller |
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This device is a platform glue layer for stmmac. |
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Please see stmmac.txt for the other unchanged properties. |
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Required properties: |
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- compatible: Should be "allwinner,sun7i-a20-gmac" |
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- clocks: Should contain the GMAC main clock, and tx clock |
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The tx clock type should be "allwinner,sun7i-a20-gmac-clk" |
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- clock-names: Should contain the clock names "stmmaceth", |
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and "allwinner_gmac_tx" |
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Optional properties: |
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- phy-supply: phandle to a regulator if the PHY needs one |
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Examples: |
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gmac: ethernet@01c50000 { |
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compatible = "allwinner,sun7i-a20-gmac"; |
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reg = <0x01c50000 0x10000>, |
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<0x01c20164 0x4>; |
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interrupts = <0 85 1>; |
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interrupt-names = "macirq"; |
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clocks = <&ahb_gates 49>, <&gmac_tx>; |
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clock-names = "stmmaceth", "allwinner_gmac_tx"; |
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phy-mode = "mii"; |
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}; |
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The following properties are common to the Ethernet controllers: |
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- local-mac-address: array of 6 bytes, specifies the MAC address that was |
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assigned to the network device; |
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- mac-address: array of 6 bytes, specifies the MAC address that was last used by |
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the boot program; should be used in cases where the MAC address assigned to |
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the device by the boot program is different from the "local-mac-address" |
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property; |
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- max-speed: number, specifies maximum speed in Mbit/s supported by the device; |
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- max-frame-size: number, maximum transfer unit (IEEE defined MTU), rather than |
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the maximum frame size (there's contradiction in ePAPR). |
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- phy-mode: string, operation mode of the PHY interface; supported values are |
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"mii", "gmii", "sgmii", "qsgmii", "tbi", "rev-mii", "rmii", "rgmii", "rgmii-id", |
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"rgmii-rxid", "rgmii-txid", "rtbi", "smii", "xgmii"; this is now a de-facto |
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standard property; |
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- phy-connection-type: the same as "phy-mode" property but described in ePAPR; |
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- phy-handle: phandle, specifies a reference to a node representing a PHY |
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device; this property is described in ePAPR and so preferred; |
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- phy: the same as "phy-handle" property, not recommended for new bindings. |
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- phy-device: the same as "phy-handle" property, not recommended for new |
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bindings. |
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Child nodes of the Ethernet controller are typically the individual PHY devices |
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connected via the MDIO bus (sometimes the MDIO bus controller is separate). |
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They are described in the phy.txt file in this same directory. |
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* STMicroelectronics 10/100/1000 Ethernet driver (GMAC) |
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Required properties: |
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- compatible: Should be "snps,dwmac-<ip_version>" "snps,dwmac" |
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For backwards compatibility: "st,spear600-gmac" is also supported. |
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- reg: Address and length of the register set for the device |
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- interrupt-parent: Should be the phandle for the interrupt controller |
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that services interrupts for this device |
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- interrupts: Should contain the STMMAC interrupts |
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- interrupt-names: Should contain the interrupt names "macirq" |
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"eth_wake_irq" if this interrupt is supported in the "interrupts" |
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property |
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- phy-mode: See ethernet.txt file in the same directory. |
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- snps,reset-gpio gpio number for phy reset. |
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- snps,reset-active-low boolean flag to indicate if phy reset is active low. |
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- snps,reset-delays-us is triplet of delays |
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The 1st cell is reset pre-delay in micro seconds. |
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The 2nd cell is reset pulse in micro seconds. |
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The 3rd cell is reset post-delay in micro seconds. |
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- snps,pbl Programmable Burst Length |
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- snps,fixed-burst Program the DMA to use the fixed burst mode |
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- snps,mixed-burst Program the DMA to use the mixed burst mode |
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- snps,force_thresh_dma_mode Force DMA to use the threshold mode for |
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both tx and rx |
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- snps,force_sf_dma_mode Force DMA to use the Store and Forward |
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mode for both tx and rx. This flag is |
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ignored if force_thresh_dma_mode is set. |
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- snps,multicast-filter-bins: Number of multicast filter hash bins |
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supported by this device instance |
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- snps,perfect-filter-entries: Number of perfect filter entries supported |
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by this device instance |
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Optional properties: |
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- resets: Should contain a phandle to the STMMAC reset signal, if any |
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- reset-names: Should contain the reset signal name "stmmaceth", if a |
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reset phandle is given |
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- max-frame-size: See ethernet.txt file in the same directory |
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- clocks: If present, the first clock should be the GMAC main clock, |
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further clocks may be specified in derived bindings. |
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- clock-names: One name for each entry in the clocks property, the |
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first one should be "stmmaceth". |
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- clk_ptp_ref: this is the PTP reference clock; in case of the PTP is |
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available this clock is used for programming the Timestamp Addend Register. |
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If not passed then the system clock will be used and this is fine on some |
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platforms. |
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- snps,burst_len: The AXI burst lenth value of the AXI BUS MODE register. |
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Examples: |
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gmac0: ethernet@e0800000 { |
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compatible = "st,spear600-gmac"; |
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reg = <0xe0800000 0x8000>; |
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interrupt-parent = <&vic1>; |
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interrupts = <24 23>; |
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interrupt-names = "macirq", "eth_wake_irq"; |
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mac-address = [000000000000]; /* Filled in by U-Boot */ |
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max-frame-size = <3800>; |
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phy-mode = "gmii"; |
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snps,multicast-filter-bins = <256>; |
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snps,perfect-filter-entries = <128>; |
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clocks = <&clock>; |
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clock-names = "stmmaceth"; |
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}; |
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