ARM: dts: imx6ul-14x14-evk: Describe the KSZ8081 reset

There are two KSZ8081 on the imx6ul-14x14-evk: one has the reset line
controlled by the Q1 output of the 74LV595PW expander, and the other
by the Q2 output.

The KSZ8081 datasheet states that the tsr parameter (Stable supply
voltage (VDDIO, VDDA_3.3) to reset high) to be 10ms minimum and
"After the de-assertion of reset, wait a minimum of 100 µs before
starting programming on the MIIM (MDC/MDIO) interface."

Describe these parameters in the devicetree.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm/boot/dts/imx6ul-14x14-evk.dtsi b/arch/arm/boot/dts/imx6ul-14x14-evk.dtsi
index 8bf845afd166911b773243ece882c4afe8a271c8..ca8c658cfcba9c910826371788c349ab1b0f6e7f 100644 (file)
--- a/arch/arm/boot/dts/imx6ul-14x14-evk.dtsi
+++ b/arch/arm/boot/dts/imx6ul-14x14-evk.dtsi
@@ -175,6 +175,10 @@
                        micrel,led-mode = <1>;
                        clocks = <&clks IMX6UL_CLK_ENET_REF>;
                        clock-names = "rmii-ref";
+                       reset-gpios = <&gpio_spi 1 GPIO_ACTIVE_LOW>;
+                       reset-assert-us = <10000>;
+                       reset-deassert-us = <100>;
+
                };
 
                ethphy1: ethernet-phy@1 {
@@ -183,6 +187,9 @@
                        micrel,led-mode = <1>;
                        clocks = <&clks IMX6UL_CLK_ENET2_REF>;
                        clock-names = "rmii-ref";
+                       reset-gpios = <&gpio_spi 2 GPIO_ACTIVE_LOW>;
+                       reset-assert-us = <10000>;
+                       reset-deassert-us = <100>;
                };
        };
 };