[PATCH] arm: dts: ti: Add device tree nodes for PRU-ICSS1 instance on AM571x

[Parvathi Pudi <parvathi@couthit.com>]

From: Roger Quadros <rogerq@ti.com>

The TI Sitara AM571x device has two PRU-ICSS subsystems: PRU-ICSS1 and
PRU-ICSS2. DUAL-MAC Ethernet support is already available on PRU-ICSS2.
This patch adds device tree support to enable DUAL-MAC mode on PRU-ICSS1
for the AM571x IDK board.

Each PRU-ICSS contains two PRU cores and several peripherals, including
the Interrupt Controller, IEP, MII_RT, MDIO, and eCAP. This patch also adds
the IEP and eCAP child nodes for PRU-ICSS1, making its layout consistent
with PRU-ICSS2.

am57-pruss.dtsi: Adds the IEP and eCAP child nodes for PRU-ICSS1.

am571x-idk.dts: Adds the PRU-ICSS1 DUAL-MAC Ethernet node, enables the
PRU-ICSS1 MDIO bus, adds the two external PHYs, and configures the required
pin multiplexing and interrupts.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Parvathi Pudi <parvathi@couthit.com>
---
 arch/arm/boot/dts/ti/omap/am57-pruss.dtsi | 11 ++++
 arch/arm/boot/dts/ti/omap/am571x-idk.dts  | 65 ++++++++++++++++++++++-
 2 files changed, 75 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/ti/omap/am57-pruss.dtsi b/arch/arm/boot/dts/ti/omap/am57-pruss.dtsi
index f73316625608..1579f284cb6e 100644
--- a/arch/arm/boot/dts/ti/omap/am57-pruss.dtsi
+++ b/arch/arm/boot/dts/ti/omap/am57-pruss.dtsi
@@ -61,6 +61,17 @@ pruss1_iepclk_mux: iepclk-mux@30 {
 				};
 			};
 
+			pruss1_iep: iep@2e000 {
+				compatible = "ti,am5728-icss-iep";
+				reg = <0x2e000 0x31c>;
+				clocks = <&pruss1_iepclk_mux>;
+			};
+
+			pruss1_ecap: ecap@30000 {
+				compatible = "ti,pruss-ecap";
+				reg = <0x30000 0x60>;
+			};
+
 			pruss1_mii_rt: mii-rt@32000 {
 				compatible = "ti,pruss-mii", "syscon";
 				reg = <0x32000 0x58>;
diff --git a/arch/arm/boot/dts/ti/omap/am571x-idk.dts b/arch/arm/boot/dts/ti/omap/am571x-idk.dts
index 02653b440585..e74c154b1940 100644
--- a/arch/arm/boot/dts/ti/omap/am571x-idk.dts
+++ b/arch/arm/boot/dts/ti/omap/am571x-idk.dts
@@ -165,6 +165,53 @@ blue3-led {
 			default-state = "off";
 		};
 	};
+
+	/* Dual mac ethernet application node on icss1 */
+	pruss1-eth {
+		compatible = "ti,am57-prueth";
+		ti,prus = <&pru1_0>, <&pru1_1>;
+		ti,pruss-gp-mux-sel = <0>,	/* GP, default */
+				<4>;	/* MII2, for PRUSS1_MII1 */
+		sram = <&ocmcram1>;
+		ti,mii-rt = <&pruss1_mii_rt>;
+		ti,iep = <&pruss1_iep>;
+		ti,ecap = <&pruss1_ecap>;
+		interrupts = <20 2 2>, <21 3 3>;
+		interrupt-names = "rx_hp", "rx_lp";
+		interrupt-parent = <&pruss1_intc>;
+
+		ethernet-ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			pruss1_emac0: ethernet-port@0 {
+				reg = <0>;
+				phy-handle = <&pruss1_eth0_phy>;
+				phy-mode = "mii";
+				interrupts = <20 2 2>, <26 6 6>, <23 6 6>;
+				interrupt-names = "rx", "emac_ptp_tx",
+						"hsr_ptp_tx";
+				/* Filled in by bootloader */
+				local-mac-address = [00 00 00 00 00 00];
+			};
+
+			pruss1_emac1: ethernet-port@1 {
+				reg = <1>;
+				phy-handle = <&pruss1_eth1_phy>;
+				phy-mode = "mii";
+				interrupts = <21 3 3>, <27 9 7>, <24 9 7>;
+				interrupt-names = "rx", "emac_ptp_tx",
+						"hsr_ptp_tx";
+				/* Filled in by bootloader */
+				local-mac-address = [00 00 00 00 00 00];
+			};
+		};
+	};
+};
+
+&pruss1_iep {
+	interrupt-parent = <&pruss1_intc>;
+	interrupts = <7 7 8>;
+	interrupt-names = "iep_cap_cmp";
 };
 
 &extcon_usb2 {
@@ -210,7 +257,23 @@ &mmc2 {
 };
 
 &pruss1_mdio {
-	status = "disabled";
+	status = "okay";
+	reset-gpios = <&gpio5 8 GPIO_ACTIVE_LOW>;
+	reset-delay-us = <2>;   /* PHY datasheet states 1uS min */
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	pruss1_eth0_phy: ethernet-phy@0 {
+		reg = <0>;
+		interrupt-parent = <&gpio3>;
+		interrupts = <28 IRQ_TYPE_LEVEL_LOW>;
+	};
+
+	pruss1_eth1_phy: ethernet-phy@1 {
+		reg = <1>;
+		interrupt-parent = <&gpio3>;
+		interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
+	};
 };
 
 &pruss2_mdio {
-- 
2.43.0