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>;
};
git.samba.org / sfrench / cifs-2.6.git / blobdiff