ARM: dts: Add DTS files for bcmbca SoC BCM6846

Add DTS for ARMv7 based broadband SoC BCM6846. bcm6846.dtsi is the
SoC description DTS header and bcm96846.dts is a simple DTS file for
Broadcom BCM96846 Reference board that only enable the UART port.

Signed-off-by: William Zhang <william.zhang@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index b7905dd8579e4b4d1a09369ea502b3a7da9289d0..85975cbd9794cc8255580dcd27893ed2b5b87481 100644 (file)
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -184,6 +184,7 @@ dtb-$(CONFIG_ARCH_BRCMSTB) += \
 dtb-$(CONFIG_ARCH_BCMBCA) += \
        bcm947622.dtb \
        bcm963178.dtb \
+       bcm96846.dtb \
        bcm96878.dtb
 dtb-$(CONFIG_ARCH_CLPS711X) += \
        ep7211-edb7211.dtb

diff --git a/arch/arm/boot/dts/bcm6846.dtsi b/arch/arm/boot/dts/bcm6846.dtsi
new file mode 100644 (file)
index 0000000..e610c10
--- /dev/null
+++ b/arch/arm/boot/dts/bcm6846.dtsi
@@ -0,0 +1,103 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2022 Broadcom Ltd.
+ */
+
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/ {
+       compatible = "brcm,bcm6846", "brcm,bcmbca";
+       #address-cells = <1>;
+       #size-cells = <1>;
+
+       interrupt-parent = <&gic>;
+
+       cpus {
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               CA7_0: cpu@0 {
+                       device_type = "cpu";
+                       compatible = "arm,cortex-a7";
+                       reg = <0x0>;
+                       next-level-cache = <&L2_0>;
+                       enable-method = "psci";
+               };
+
+               CA7_1: cpu@1 {
+                       device_type = "cpu";
+                       compatible = "arm,cortex-a7";
+                       reg = <0x1>;
+                       next-level-cache = <&L2_0>;
+                       enable-method = "psci";
+               };
+
+               L2_0: l2-cache0 {
+                       compatible = "cache";
+               };
+       };
+
+       timer {
+               compatible = "arm,armv7-timer";
+               interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+                       <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+                       <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+                       <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
+               arm,cpu-registers-not-fw-configured;
+       };
+
+       pmu: pmu {
+               compatible = "arm,cortex-a7-pmu";
+               interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>,
+                       <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
+               interrupt-affinity = <&CA7_0>, <&CA7_1>;
+       };
+
+       clocks: clocks {
+               periph_clk: periph-clk {
+                       compatible = "fixed-clock";
+                       #clock-cells = <0>;
+                       clock-frequency = <200000000>;
+               };
+       };
+
+       psci {
+               compatible = "arm,psci-0.2";
+               method = "smc";
+               cpu_off = <1>;
+               cpu_on = <2>;
+       };
+
+       axi@81000000 {
+               compatible = "simple-bus";
+               #address-cells = <1>;
+               #size-cells = <1>;
+               ranges = <0 0x81000000 0x4000>;
+
+               gic: interrupt-controller@1000 {
+                       compatible = "arm,cortex-a7-gic";
+                       #interrupt-cells = <3>;
+                       #address-cells = <0>;
+                       interrupt-controller;
+                       reg = <0x1000 0x1000>,
+                               <0x2000 0x2000>;
+               };
+       };
+
+       bus@ff800000 {
+               compatible = "simple-bus";
+               #address-cells = <1>;
+               #size-cells = <1>;
+               ranges = <0 0xff800000 0x800000>;
+
+               uart0: serial@640 {
+                       compatible = "brcm,bcm6345-uart";
+                       reg = <0x640 0x1b>;
+                       interrupts = <GIC_SPI 92 IRQ_TYPE_LEVEL_HIGH>;
+                       clocks = <&periph_clk>;
+                       clock-names = "refclk";
+                       status = "disabled";
+               };
+       };
+};

diff --git a/arch/arm/boot/dts/bcm96846.dts b/arch/arm/boot/dts/bcm96846.dts
new file mode 100644 (file)
index 0000000..c70ebcc
--- /dev/null
+++ b/arch/arm/boot/dts/bcm96846.dts
@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2022 Broadcom Ltd.
+ */
+
+/dts-v1/;
+
+#include "bcm6846.dtsi"
+
+/ {
+       model = "Broadcom BCM96846 Reference Board";
+       compatible = "brcm,bcm96846", "brcm,bcm6846", "brcm,bcmbca";
+
+       aliases {
+               serial0 = &uart0;
+       };
+
+       chosen {
+               stdout-path = "serial0:115200n8";
+       };
+
+       memory@0 {
+               device_type = "memory";
+               reg = <0x0 0x08000000>;
+       };
+};
+
+&uart0 {
+       status = "okay";
+};