[PATCH 1/2 v2] ARM: dts: Add Goramo MultiLink device tree

* [PATCH 1/2 v2] ARM: dts: Add Goramo MultiLink device tree
@ 2021-11-29 23:13 Linus Walleij
  2021-11-29 23:13 ` [PATCH 2/2 v2] ARM: ixp4xx: Delete the Goramo MLR boardfile Linus Walleij
  0 siblings, 1 reply; 2+ messages in thread
From: Linus Walleij @ 2021-11-29 23:13 UTC (permalink / raw)
  To: linux-arm-kernel, Imre Kaloz, Krzysztof Halasa
  Cc: Linus Walleij, openwrt-devel

This adds a device tree for the Goramo MultiLink IXP425-based
WAN router.

Cc: Krzysztof Hałasa <khalasa@piap.pl>
Cc: openwrt-devel@lists.openwrt.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Amend to the final merged bidings.
- I have added bindings for this set-up of the HDLC WAN,
  and they are merged to the netdev tree.
---
 arch/arm/boot/dts/Makefile                    |   1 +
 .../dts/intel-ixp42x-goramo-multilink.dts     | 180 ++++++++++++++++++
 arch/arm/boot/dts/intel-ixp4xx.dtsi           |  17 ++
 3 files changed, 198 insertions(+)
 create mode 100644 arch/arm/boot/dts/intel-ixp42x-goramo-multilink.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 0de64f237cd8..4084535c6489 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -263,6 +263,7 @@ dtb-$(CONFIG_ARCH_IXP4XX) += \
 	intel-ixp46x-ixdp465.dtb \
 	intel-ixp42x-adi-coyote.dtb \
 	intel-ixp42x-ixdpg425.dtb \
+	intel-ixp42x-goramo-multilink.dtb \
 	intel-ixp42x-iomega-nas100d.dtb \
 	intel-ixp42x-dlink-dsm-g600.dtb \
 	intel-ixp42x-gateworks-gw2348.dtb \
diff --git a/arch/arm/boot/dts/intel-ixp42x-goramo-multilink.dts b/arch/arm/boot/dts/intel-ixp42x-goramo-multilink.dts
new file mode 100644
index 000000000000..f80388b17a9e
--- /dev/null
+++ b/arch/arm/boot/dts/intel-ixp42x-goramo-multilink.dts
@@ -0,0 +1,180 @@
+// SPDX-License-Identifier: ISC
+/*
+ * Device Tree file for the Goramo MultiLink Router
+ * There are two variants:
+ * - MultiLink Basic (a box)
+ * - MultiLink Max (19" rack mount)
+ * This device tree supports MultiLink Basic.
+ * This machine is based on IXP425.
+ * This is one of the few devices supporting the IXP4xx High-Speed Serial
+ * (HSS) link for a V.35 WAN interface.
+ * The hardware originates in Poland.
+ */
+
+/dts-v1/;
+
+#include "intel-ixp42x.dtsi"
+#include <dt-bindings/input/input.h>
+
+/ {
+	model = "Goramo MultiLink Router";
+	compatible = "goramo,multilink-router", "intel,ixp42x";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	memory@0 {
+		/*
+		 * 64 MB of RAM according to the manual. The MultiLink
+		 * Max has 128 MB.
+		 */
+		device_type = "memory";
+		reg = <0x00000000 0x4000000>;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200n8";
+		stdout-path = "uart0:115200n8";
+	};
+
+	aliases {
+		serial0 = &uart0;
+		serial1 = &uart1;
+	};
+
+	/*
+	 * 74HC4094 which is used as a rudimentary GPIO expander
+	 * FIXME:
+	 * - Create device tree bindings for this as GPIO expander
+	 * - Write a pure DT GPIO driver using these bindings
+	 * - Support cascading in the style of gpio-74x164.c (cannot be reused, very different)
+	 */
+	gpio_74: gpio-74hc4094 {
+		compatible = "nxp,74hc4094";
+		cp-gpios = <&gpio0 0 GPIO_ACTIVE_HIGH>;
+		d-gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>;
+		str-gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>;
+		/* oe-gpios is optional */
+		gpio-controller;
+		#gpio-cells = <2>;
+		/* We are not cascaded */
+		registers-number = <1>;
+		gpio-line-names = "CONTROL_HSS0_CLK_INT", "CONTROL_HSS1_CLK_INT", "CONTROL_HSS0_DTR_N",
+				"CONTROL_HSS1_DTR_N", "CONTROL_EXT", "CONTROL_AUTO_RESET",
+				"CONTROL_PCI_RESET_N", "CONTROL_EEPROM_WC_N";
+	};
+
+	soc {
+		bus@c4000000 {
+			flash@0,0 {
+				compatible = "intel,ixp4xx-flash", "cfi-flash";
+				bank-width = <2>;
+				/* Enable writes on the expansion bus */
+				intel,ixp4xx-eb-write-enable = <1>;
+				/* 16 MB of Flash mapped in at CS0 */
+				reg = <0 0x00000000 0x1000000>;
+
+				partitions {
+					compatible = "redboot-fis";
+					/* Eraseblock at 0x0fe0000 */
+					fis-index-block = <0x7f>;
+				};
+			};
+		};
+
+		pci@c0000000 {
+			status = "ok";
+
+			/*
+			 * The device has 4 slots (IDSEL) with one dedicated IRQ per slot.
+			 * The slots have Ethernet, Ethernet, NEC and MPCI.
+			 * The IDSELs are 11, 12, 13, 14.
+			 */
+			interrupt-map =
+			/* IDSEL 11 - Ethernet A */
+			<0x5800 0 0 1 &gpio0 4 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 11 is irq 4 */
+			<0x5800 0 0 2 &gpio0 4 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 11 is irq 4 */
+			<0x5800 0 0 3 &gpio0 4 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 11 is irq 4 */
+			<0x5800 0 0 4 &gpio0 4 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 11 is irq 4 */
+			/* IDSEL 12 - Ethernet B */
+			<0x6000 0 0 1 &gpio0 5 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 12 is irq 5 */
+			<0x6000 0 0 2 &gpio0 5 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 12 is irq 5 */
+			<0x6000 0 0 3 &gpio0 5 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 12 is irq 5 */
+			<0x6000 0 0 4 &gpio0 5 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 12 is irq 5 */
+			/* IDSEL 13 - MPCI */
+			<0x6800 0 0 1 &gpio0 12 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 13 is irq 12 */
+			<0x6800 0 0 2 &gpio0 12 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 13 is irq 12 */
+			<0x6800 0 0 3 &gpio0 12 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 13 is irq 12 */
+			<0x6800 0 0 4 &gpio0 12 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 13 is irq 12 */
+			/* IDSEL 14 - NEC */
+			<0x7000 0 0 1 &gpio0 3 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 14 is irq 3 */
+			<0x7000 0 0 2 &gpio0 3 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 14 is irq 3 */
+			<0x7000 0 0 3 &gpio0 3 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 14 is irq 3 */
+			<0x7000 0 0 4 &gpio0 3 IRQ_TYPE_LEVEL_LOW>; /* INT D on slot 14 is irq 3 */
+		};
+
+		/* HSS links */
+		npe@c8006000 {
+			hss@0 {
+				status = "okay";
+				intel,queue-chl-rxtrig = <&qmgr 12>;
+				intel,queue-chl-txready = <&qmgr 34>;
+				intel,queue-pkt-rx = <&qmgr 13>;
+				intel,queue-pkt-tx = <&qmgr 14>, <&qmgr 15>, <&qmgr 16>, <&qmgr 17>;
+				intel,queue-pkt-rxfree = <&qmgr 18>, <&qmgr 19>, <&qmgr 20>, <&qmgr 21>;
+				intel,queue-pkt-txdone = <&qmgr 22>;
+				/* The Goramo GPIO-based clock etc control */
+				cts-gpios = <&gpio0 10 GPIO_ACTIVE_LOW>;
+				rts-gpios = <&gpio0 14 GPIO_ACTIVE_LOW>;
+				dcd-gpios = <&gpio0 6 GPIO_ACTIVE_LOW>;
+				dtr-gpios = <&gpio_74 2 GPIO_ACTIVE_LOW>;
+				clk-internal-gpios = <&gpio_74 0 GPIO_ACTIVE_HIGH>;
+			};
+			hss@1 {
+				status = "okay";
+				intel,queue-chl-rxtrig = <&qmgr 10>;
+				intel,queue-chl-txready = <&qmgr 35>;
+				intel,queue-pkt-rx = <&qmgr 0>;
+				intel,queue-pkt-tx = <&qmgr 5>, <&qmgr 6>, <&qmgr 7>, <&qmgr 8>;
+				intel,queue-pkt-rxfree = <&qmgr 1>, <&qmgr 2>, <&qmgr 3>, <&qmgr 4>;
+				intel,queue-pkt-txdone = <&qmgr 9>;
+				/* The Goramo GPIO-based clock etc control */
+				cts-gpios = <&gpio0 11 GPIO_ACTIVE_LOW>;
+				rts-gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
+				dcd-gpios = <&gpio0 7 GPIO_ACTIVE_LOW>;
+				dtr-gpios = <&gpio_74 3 GPIO_ACTIVE_LOW>;
+				clk-internal-gpios = <&gpio_74 1 GPIO_ACTIVE_HIGH>;
+			};
+		};
+
+		/* EthB */
+		ethernet@c8009000 {
+			status = "ok";
+			queue-rx = <&qmgr 3>;
+			queue-txready = <&qmgr 32>;
+			phy-mode = "rgmii";
+			phy-handle = <&phy0>;
+
+			mdio {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				phy0: ethernet-phy@0 {
+					reg = <0>;
+				};
+
+				phy1: ethernet-phy@1 {
+					reg = <1>;
+				};
+			};
+		};
+
+		/* EthC */
+		ethernet@c800a000 {
+			status = "ok";
+			queue-rx = <&qmgr 4>;
+			queue-txready = <&qmgr 33>;
+			phy-mode = "rgmii";
+			phy-handle = <&phy1>;
+		};
+	};
+};
diff --git a/arch/arm/boot/dts/intel-ixp4xx.dtsi b/arch/arm/boot/dts/intel-ixp4xx.dtsi
index 46fede021476..51a716c59669 100644
--- a/arch/arm/boot/dts/intel-ixp4xx.dtsi
+++ b/arch/arm/boot/dts/intel-ixp4xx.dtsi
@@ -139,6 +139,23 @@ timer@c8005000 {
 		npe: npe@c8006000 {
 			compatible = "intel,ixp4xx-network-processing-engine";
 			reg = <0xc8006000 0x1000>, <0xc8007000 0x1000>, <0xc8008000 0x1000>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			/* NPE-A contains two high-speed serial links */
+			hss@0 {
+				compatible = "intel,ixp4xx-hss";
+				reg = <0>;
+				intel,npe-handle = <&npe 0>;
+				status = "disabled";
+			};
+
+			hss@1 {
+				compatible = "intel,ixp4xx-hss";
+				reg = <1>;
+				intel,npe-handle = <&npe 0>;
+				status = "disabled";
+			};
 
 			/* NPE-C contains a crypto accelerator */
 			crypto {
-- 
2.31.1


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