diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/net/sti-dwmac.txt | 91 |
1 files changed, 49 insertions, 42 deletions
diff --git a/Documentation/devicetree/bindings/net/sti-dwmac.txt b/Documentation/devicetree/bindings/net/sti-dwmac.txt index 3dd3d0bf112f..6762a6b5da7e 100644 --- a/Documentation/devicetree/bindings/net/sti-dwmac.txt +++ b/Documentation/devicetree/bindings/net/sti-dwmac.txt @@ -1,58 +1,65 @@ STMicroelectronics SoC DWMAC glue layer controller +This file documents differences between the core properties in +Documentation/devicetree/bindings/net/stmmac.txt +and what is needed on STi platforms to program the stmmac glue logic. + The device node has following properties. Required properties: - - compatible : Can be "st,stih415-dwmac", "st,stih416-dwmac" or - "st,stid127-dwmac". - - reg : Offset of the glue configuration register map in system + - compatible : Can be "st,stih415-dwmac", "st,stih416-dwmac", + "st,stih407-dwmac", "st,stid127-dwmac". + - reg : Offset of the glue configuration register map in system configuration regmap pointed by st,syscon property and size. - - - reg-names : Should be "sti-ethconf". - - - st,syscon : Should be phandle to system configuration node which + - st,syscon : Should be phandle to system configuration node which encompases this glue registers. + - st,gmac_en: this is to enable the gmac into a dedicated sysctl control + register available on STiH407 SoC. + - sti-ethconf: this is the gmac glue logic register to enable the GMAC, + select among the different modes and program the clk retiming. + - pinctrl-0: pin-control for all the MII mode supported. - - st,tx-retime-src: On STi Parts for Giga bit speeds, 125Mhz clocks can be - wired up in from different sources. One via TXCLK pin and other via CLK_125 - pin. This wiring is totally board dependent. However the retiming glue - logic should be configured accordingly. Possible values for this property - - "txclk" - if 125Mhz clock is wired up via txclk line. - "clk_125" - if 125Mhz clock is wired up via clk_125 line. - - This property is only valid for Giga bit setup( GMII, RGMII), and it is - un-used for non-giga bit (MII and RMII) setups. Also note that internal - clockgen can not generate stable 125Mhz clock. - - - st,ext-phyclk: This boolean property indicates who is generating the clock - for tx and rx. This property is only valid for RMII case where the clock can - be generated from the MAC or PHY. - - - clock-names: should be "sti-ethclk". - - clocks: Should point to ethernet clockgen which can generate phyclk. - +Optional properties: + - resets : phandle pointing to the system reset controller with correct + reset line index for ethernet reset. + - st,ext-phyclk: valid only for RMII where PHY can generate 50MHz clock or + MAC can generate it. + - st,tx-retime-src: This specifies which clk is wired up to the mac for + retimeing tx lines. This is totally board dependent and can take one of the + posssible values from "txclk", "clk_125" or "clkgen". + If not passed, the internal clock will be used by default. + - sti-ethclk: this is the phy clock. + - sti-clkconf: this is an extra sysconfig register, available in new SoCs, + to program the clk retiming. + - st,gmac_en: to enable the GMAC, this only is present in some SoCs; e.g. + STiH407. Example: -ethernet0: dwmac@fe810000 { - device_type = "network"; - compatible = "st,stih416-dwmac", "snps,dwmac", "snps,dwmac-3.710"; - reg = <0xfe810000 0x8000>, <0x8bc 0x4>; - reg-names = "stmmaceth", "sti-ethconf"; - interrupts = <0 133 0>, <0 134 0>, <0 135 0>; - interrupt-names = "macirq", "eth_wake_irq", "eth_lpi"; - phy-mode = "mii"; +ethernet0: dwmac@9630000 { + device_type = "network"; + status = "disabled"; + compatible = "st,stih407-dwmac", "snps,dwmac", "snps,dwmac-3.710"; + reg = <0x9630000 0x8000>, <0x80 0x4>; + reg-names = "stmmaceth", "sti-ethconf"; - st,syscon = <&syscfg_rear>; + st,syscon = <&syscfg_sbc_reg>; + st,gmac_en; + resets = <&softreset STIH407_ETH1_SOFTRESET>; + reset-names = "stmmaceth"; - snps,pbl = <32>; + interrupts = <GIC_SPI 98 IRQ_TYPE_NONE>, + <GIC_SPI 99 IRQ_TYPE_NONE>, + <GIC_SPI 100 IRQ_TYPE_NONE>; + interrupt-names = "macirq", "eth_wake_irq", "eth_lpi"; + + snps,pbl = <32>; snps,mixed-burst; - resets = <&softreset STIH416_ETH0_SOFTRESET>; - reset-names = "stmmaceth"; - pinctrl-0 = <&pinctrl_mii0>; - pinctrl-names = "default"; - clocks = <&CLK_S_GMAC0_PHY>; - clock-names = "stmmaceth"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_rgmii1>; + + clock-names = "stmmaceth", "sti-ethclk"; + clocks = <&CLK_S_C0_FLEXGEN CLK_EXT2F_A9>, + <&CLK_S_C0_FLEXGEN CLK_ETH_PHY>; }; |