bmips: add new target

This target has full device tree support, thus reducing the number of
patches needed for bcm63xx, in which there's a patch for every board.

The intention is to start with a minimal amount of downstream patches and
start upstreaming all of them.

Current status:
 - Enabling EHCI/OHCI on BCM6358 causes a kernel panic.
 - BCM63268 lacks Timer Clocks/Reset support.
 - No PCI/PCIe drivers.
 - No ethernet drivers.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

1 files changed, 315 insertions, 0 deletions

diff --git a/target/linux/bmips/dts/bcm6358.dtsi b/target/linux/bmips/dts/bcm6358.dtsi
new file mode 100644
index 0000000000..650459d339
--- /dev/null
+++ b/target/linux/bmips/dts/bcm6358.dtsi
@@ -0,0 +1,315 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+/dts-v1/;
+
+#include <dt-bindings/clock/bcm6358-clock.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/interrupt-controller/bcm6358-interrupt-controller.h>
+#include <dt-bindings/reset/bcm6358-reset.h>
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+	compatible = "brcm,bcm6358";
+
+	aliases {
+		pflash = &pflash;
+		pinctrl = &pinctrl;
+		serial0 = &uart0;
+		serial1 = &uart1;
+		spi0 = &lsspi;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200n8 earlycon";
+		stdout-path = "serial0:115200n8";
+	};
+
+	clocks {
+		periph_osc: periph-osc {
+			compatible = "fixed-clock";
+
+			#clock-cells = <0>;
+
+			clock-frequency = <50000000>;
+			clock-output-names = "periph";
+		};
+	};
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		mips-hpt-frequency = <150000000>;
+
+		cpu@0 {
+			compatible = "brcm,bmips4350", "mips,mips4Kc";
+			device_type = "cpu";
+			reg = <0>;
+		};
+
+		cpu@1 {
+			compatible = "brcm,bmips4350", "mips,mips4Kc";
+			device_type = "cpu";
+			reg = <1>;
+		};
+	};
+
+	cpu_intc: interrupt-controller {
+		#address-cells = <0>;
+		compatible = "mti,cpu-interrupt-controller";
+
+		interrupt-controller;
+		#interrupt-cells = <1>;
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0 0>;
+	};
+
+	pflash: nor@1e000000 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "cfi-flash";
+		reg = <0x1e000000 0x2000000>;
+		bank-width = <2>;
+
+		status = "disabled";
+	};
+
+	ubus {
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		compatible = "simple-bus";
+		ranges;
+
+		periph_clk: clock-controller@fffe0004 {
+			compatible = "brcm,bcm6358-clocks";
+			reg = <0xfffe0004 0x4>;
+			#clock-cells = <1>;
+		};
+
+		pll_cntl: syscon@fffe0008 {
+			compatible = "syscon";
+			reg = <0xfffe0008 0x4>;
+			native-endian;
+		};
+
+		syscon-reboot {
+			compatible = "syscon-reboot";
+			regmap = <&pll_cntl>;
+			offset = <0x0>;
+			mask = <0x1>;
+		};
+
+		periph_intc: interrupt-controller@fffe000c {
+			#address-cells = <1>;
+			compatible = "brcm,bcm6345-l1-intc";
+			reg = <0xfffe000c 0x8>,
+			      <0xfffe0038 0x8>;
+
+			interrupt-controller;
+			#interrupt-cells = <1>;
+
+			interrupt-parent = <&cpu_intc>;
+			interrupts = <2>, <3>;
+		};
+
+		ext_intc0: interrupt-controller@fffe0014 {
+			#address-cells = <1>;
+			compatible = "brcm,bcm6345-ext-intc";
+			reg = <0xfffe0014 0x4>;
+
+			interrupt-controller;
+			#interrupt-cells = <2>;
+
+			interrupts = <BCM6358_IRQ_EXT0>,
+				     <BCM6358_IRQ_EXT1>,
+				     <BCM6358_IRQ_EXT2>,
+				     <BCM6358_IRQ_EXT3>;
+		};
+
+		ext_intc1: interrupt-controller@fffe001c {
+			#address-cells = <1>;
+			compatible = "brcm,bcm6345-ext-intc";
+			reg = <0xfffe001c 0x4>;
+
+			interrupt-controller;
+			#interrupt-cells = <2>;
+
+			interrupts = <BCM6358_IRQ_EXT4>,
+				     <BCM6358_IRQ_EXT5>;
+		};
+
+		periph_rst: reset-controller@fffe0034 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0xfffe0034 0x4>;
+			#reset-cells = <1>;
+		};
+
+		pinctrl: pin-controller@fffe0080 {
+			compatible = "brcm,bcm6358-pinctrl";
+			reg = <0xfffe0080 0x8>,
+			      <0xfffe0088 0x8>;
+			reg-names = "dirout", "dat", "mode";
+			brcm,gpiomode = <&gpiomode>;
+
+			gpio-controller;
+			#gpio-cells = <2>;
+
+			interrupts-extended = <&ext_intc1 0 0>,
+					      <&ext_intc1 1 0>,
+					      <&ext_intc0 0 0>,
+					      <&ext_intc0 1 0>,
+					      <&ext_intc0 2 0>,
+					      <&ext_intc0 3 0>;
+			interrupt-names = "gpio32", "gpio33", "gpio34", "gpio35",
+					  "gpio36", "gpio37";
+
+			pinctrl_ebi_cs: ebi_cs {
+				function = "ebi_cs";
+				groups = "ebi_cs_grp";
+			};
+
+			pinctrl_uart1: uart1 {
+				function = "uart1";
+				groups = "uart1_grp";
+			};
+
+			pinctrl_serial_led: serial_led {
+				function = "serial_led";
+				groups = "serial_led_grp";
+			};
+
+			pinctrl_legacy_led: legacy_led {
+				function = "legacy_led";
+				groups = "legacy_led_grp";
+			};
+
+			pinctrl_led: led {
+				function = "led";
+				groups = "led_grp";
+			};
+
+			pinctrl_spi_cs_23: spi_cs {
+				function = "spi_cs";
+				groups = "spi_cs_grp";
+			};
+
+			pinctrl_utopia: utopia {
+				function = "utopia";
+				groups = "utopia_grp";
+			};
+
+			pinctrl_pwm_syn_clk: pwm_syn_clk {
+				function = "pwm_syn_clk";
+				groups = "pwm_syn_clk_grp";
+			};
+
+			pinctrl_sys_irq: sys_irq {
+				function = "sys_irq";
+				groups = "sys_irq_grp";
+			};
+		};
+
+		gpiomode: gpiomode@fffe0098 {
+			compatible = "brcm,bcm6358-gpiomode", "syscon";
+			reg = <0xfffe0098 0x4>;
+		};
+
+		leds: led-controller@fffe00d0 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "brcm,bcm6358-leds";
+			reg = <0xfffe00d0 0x8>;
+
+			status = "disabled";
+		};
+
+		uart0: serial@fffe0100 {
+			compatible = "brcm,bcm6345-uart";
+			reg = <0xfffe0100 0x18>;
+
+			interrupt-parent = <&periph_intc>;
+			interrupts = <BCM6358_IRQ_UART0>;
+
+			clocks = <&periph_osc>;
+			clock-names = "periph";
+
+			status = "disabled";
+		};
+
+		uart1: serial@fffe0120 {
+			compatible = "brcm,bcm6345-uart";
+			reg = <0xfffe0120 0x18>;
+
+			interrupt-parent = <&periph_intc>;
+			interrupts = <BCM6358_IRQ_UART1>;
+
+			clocks = <&periph_osc>;
+			clock-names = "periph";
+
+			status = "disabled";
+		};
+
+		lsspi: spi@fffe0800 {
+			compatible = "brcm,bcm6358-spi";
+			reg = <0xfffe0800 0x70c>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			interrupt-parent = <&periph_intc>;
+			interrupts = <BCM6358_IRQ_SPI>;
+
+			clocks = <&periph_clk BCM6358_CLK_SPI>;
+			clock-names = "spi";
+
+			resets = <&periph_rst BCM6358_RST_SPI>;
+
+			status = "disabled";
+		};
+
+		ehci: usb@fffe1300 {
+			compatible = "brcm,bcm6358-ehci", "generic-ehci";
+			reg = <0xfffe1300 0x100>;
+			big-endian;
+			ignore-oc;
+
+			interrupt-parent = <&periph_intc>;
+			interrupts = <BCM6358_IRQ_EHCI>;
+
+			phys = <&usbh 0>;
+			phy-names = "usb";
+
+			status = "disabled";
+		};
+
+		ohci: usb@fffe1400 {
+			compatible = "brcm,bcm6358-ohci", "generic-ohci";
+			reg = <0xfffe1400 0x100>;
+			big-endian;
+			no-big-frame-no;
+
+			interrupt-parent = <&periph_intc>;
+			interrupts = <BCM6358_IRQ_OHCI>;
+
+			phys = <&usbh 0>;
+			phy-names = "usb";
+
+			status = "disabled";
+		};
+
+		usbh: usb-phy@fffe1500 {
+			compatible = "brcm,bcm6358-usbh-phy";
+			reg = <0xfffe1500 0x38>;
+
+			#phy-cells = <1>;
+
+			resets = <&periph_rst BCM6358_RST_USBH>;
+
+			status = "disabled";
+		};
+	};
+};