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Diffstat (limited to 'Documentation/devicetree/bindings/net/sti-dwmac.txt')
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diff --git a/Documentation/devicetree/bindings/net/sti-dwmac.txt b/Documentation/devicetree/bindings/net/sti-dwmac.txt new file mode 100644 index 000000000000..3dd3d0bf112f --- /dev/null +++ b/Documentation/devicetree/bindings/net/sti-dwmac.txt | |||
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| 1 | STMicroelectronics SoC DWMAC glue layer controller | ||
| 2 | |||
| 3 | The device node has following properties. | ||
| 4 | |||
| 5 | Required properties: | ||
| 6 | - compatible : Can be "st,stih415-dwmac", "st,stih416-dwmac" or | ||
| 7 | "st,stid127-dwmac". | ||
| 8 | - reg : Offset of the glue configuration register map in system | ||
| 9 | configuration regmap pointed by st,syscon property and size. | ||
| 10 | |||
| 11 | - reg-names : Should be "sti-ethconf". | ||
| 12 | |||
| 13 | - st,syscon : Should be phandle to system configuration node which | ||
| 14 | encompases this glue registers. | ||
| 15 | |||
| 16 | - st,tx-retime-src: On STi Parts for Giga bit speeds, 125Mhz clocks can be | ||
| 17 | wired up in from different sources. One via TXCLK pin and other via CLK_125 | ||
| 18 | pin. This wiring is totally board dependent. However the retiming glue | ||
| 19 | logic should be configured accordingly. Possible values for this property | ||
| 20 | |||
| 21 | "txclk" - if 125Mhz clock is wired up via txclk line. | ||
| 22 | "clk_125" - if 125Mhz clock is wired up via clk_125 line. | ||
| 23 | |||
| 24 | This property is only valid for Giga bit setup( GMII, RGMII), and it is | ||
| 25 | un-used for non-giga bit (MII and RMII) setups. Also note that internal | ||
| 26 | clockgen can not generate stable 125Mhz clock. | ||
| 27 | |||
| 28 | - st,ext-phyclk: This boolean property indicates who is generating the clock | ||
| 29 | for tx and rx. This property is only valid for RMII case where the clock can | ||
| 30 | be generated from the MAC or PHY. | ||
| 31 | |||
| 32 | - clock-names: should be "sti-ethclk". | ||
| 33 | - clocks: Should point to ethernet clockgen which can generate phyclk. | ||
| 34 | |||
| 35 | |||
| 36 | Example: | ||
| 37 | |||
| 38 | ethernet0: dwmac@fe810000 { | ||
| 39 | device_type = "network"; | ||
| 40 | compatible = "st,stih416-dwmac", "snps,dwmac", "snps,dwmac-3.710"; | ||
| 41 | reg = <0xfe810000 0x8000>, <0x8bc 0x4>; | ||
| 42 | reg-names = "stmmaceth", "sti-ethconf"; | ||
| 43 | interrupts = <0 133 0>, <0 134 0>, <0 135 0>; | ||
| 44 | interrupt-names = "macirq", "eth_wake_irq", "eth_lpi"; | ||
| 45 | phy-mode = "mii"; | ||
| 46 | |||
| 47 | st,syscon = <&syscfg_rear>; | ||
| 48 | |||
| 49 | snps,pbl = <32>; | ||
| 50 | snps,mixed-burst; | ||
| 51 | |||
| 52 | resets = <&softreset STIH416_ETH0_SOFTRESET>; | ||
| 53 | reset-names = "stmmaceth"; | ||
| 54 | pinctrl-0 = <&pinctrl_mii0>; | ||
| 55 | pinctrl-names = "default"; | ||
| 56 | clocks = <&CLK_S_GMAC0_PHY>; | ||
| 57 | clock-names = "stmmaceth"; | ||
| 58 | }; | ||
