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Subject[PATCH] ARM: tegra: colibri t30: fix on-module ethernet
Date
Looks like Ethernet only ever worked if U-Boot properly brought it up
as both the reset as well as the VBUS lines were not actively handled
in-kernel.
This patch fixes this by just pulling up the reset GPIO and properly
enabling VBUS via a GPIO enabled fixed regulator VBUS supply.

Signed-off-by: Marcel Ziswiler <marcel@ziswiler.com>
---
Don't know whether this one could still make it into the current RC
cycle as it is clearly a bug fix.

arch/arm/boot/dts/tegra30-colibri.dtsi | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)

diff --git a/arch/arm/boot/dts/tegra30-colibri.dtsi b/arch/arm/boot/dts/tegra30-colibri.dtsi
index c4ed1be..ddbdb77 100644
--- a/arch/arm/boot/dts/tegra30-colibri.dtsi
+++ b/arch/arm/boot/dts/tegra30-colibri.dtsi
@@ -167,6 +167,22 @@
nvidia,pull = <TEGRA_PIN_PULL_UP>;
nvidia,tristate = <TEGRA_PIN_DISABLE>;
};
+
+ /* LAN_RESET# */
+ pex_l0_prsnt_n_pdd0 {
+ nvidia,pins = "pex_l0_prsnt_n_pdd0";
+ nvidia,function = "rsvd3";
+ nvidia,pull = <TEGRA_PIN_PULL_UP>;
+ nvidia,tristate = <TEGRA_PIN_DISABLE>;
+ };
+
+ /* LAN_V_BUS */
+ pex_l0_clkreq_n_pdd2 {
+ nvidia,pins = "pex_l0_clkreq_n_pdd2";
+ nvidia,function = "rsvd3";
+ nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+ nvidia,tristate = <TEGRA_PIN_DISABLE>;
+ };
};
};

@@ -345,6 +361,7 @@
usb-phy@7d004000 {
status = "okay";
nvidia,is-wired = <1>;
+ vbus-supply = <&lan_vbus_reg>;
};

clocks {
@@ -382,5 +399,17 @@
regulator-max-microvolt = <5000000>;
regulator-always-on;
};
+
+ /* LAN_V_BUS */
+ lan_vbus_reg: regulator@102 {
+ compatible = "regulator-fixed";
+ reg = <102>;
+ regulator-name = "lan_vbus";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ gpio = <&gpio TEGRA_GPIO(DD, 2) GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ vin-supply = <&charge_pump_5v0_reg>;
+ };
};
};
--
1.9.3


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