From 2cf1c348d0f5d43b601974cbde3e6db5ad491a40 Mon Sep 17 00:00:00 2001 From: John Crispin Date: Sun, 30 Jan 2022 15:51:06 +0100 Subject: [PATCH] ARM: Add basic support for Airoha EN7523 SoC EN7523 is an armv8 based silicon used inside broadband access type devices such as xPON and xDSL. It shares various silicon blocks with MediaTek silicon such as the MT7622. Add basic support for Airoha EN7523, enough for booting to console. The UART is basically 8250-compatible, except for the clock selection. A clock-frequency value is synthesized to get this to run at 115200 bps. Signed-off-by: John Crispin Signed-off-by: Bert Vermeulen Signed-off-by: Felix Fietkau Link: https://lore.kernel.org/r/20220130145116.88406-4-nbd@nbd.name Signed-off-by: Matthias Brugger --- arch/arm/Kconfig | 12 ++++ arch/arm/Makefile | 1 + arch/arm/boot/dts/Makefile | 2 + arch/arm/boot/dts/en7523-evb.dts | 27 +++++++++ arch/arm/boot/dts/en7523.dtsi | 117 +++++++++++++++++++++++++++++++++++++++ arch/arm/mach-airoha/Makefile | 2 + arch/arm/mach-airoha/airoha.c | 16 ++++++ 7 files changed, 177 insertions(+) create mode 100644 arch/arm/boot/dts/en7523-evb.dts create mode 100644 arch/arm/boot/dts/en7523.dtsi create mode 100644 arch/arm/mach-airoha/Makefile create mode 100644 arch/arm/mach-airoha/airoha.c diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index fabe391..9da3c95 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -572,6 +572,18 @@ config ARCH_VIRT select HAVE_ARM_ARCH_TIMER select ARCH_SUPPORTS_BIG_ENDIAN +config ARCH_AIROHA + bool "Airoha SoC Support" + depends on ARCH_MULTI_V7 + select ARM_AMBA + select ARM_GIC + select ARM_GIC_V3 + select ARM_PSCI + select HAVE_ARM_ARCH_TIMER + select COMMON_CLK + help + Support for Airoha EN7523 SoCs + # # This is sorted alphabetically by mach-* pathname. However, plat-* # Kconfigs may be included either alphabetically (according to the diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 77172d5..34baf88 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -160,6 +160,7 @@ textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000 # Machine directory name. This list is sorted alphanumerically # by CONFIG_* macro name. machine-$(CONFIG_ARCH_ACTIONS) += actions +machine-$(CONFIG_ARCH_AIROHA) += airoha machine-$(CONFIG_ARCH_ALPINE) += alpine machine-$(CONFIG_ARCH_ARTPEC) += artpec machine-$(CONFIG_ARCH_ASPEED) += aspeed diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index 235ad55..e240ce6 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -187,6 +187,8 @@ dtb-$(CONFIG_ARCH_DAVINCI) += \ da850-lego-ev3.dtb dtb-$(CONFIG_ARCH_DIGICOLOR) += \ cx92755_equinox.dtb +dtb-$(CONFIG_ARCH_AIROHA) += \ + en7523-evb.dtb dtb-$(CONFIG_ARCH_EXYNOS3) += \ exynos3250-artik5-eval.dtb \ exynos3250-monk.dtb \ diff --git a/arch/arm/boot/dts/en7523-evb.dts b/arch/arm/boot/dts/en7523-evb.dts new file mode 100644 index 0000000..69754ef --- /dev/null +++ b/arch/arm/boot/dts/en7523-evb.dts @@ -0,0 +1,27 @@ +// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +/dts-v1/; + +/* Bootloader installs ATF here */ +/memreserve/ 0x80000000 0x200000; + +#include "en7523.dtsi" + +/ { + model = "Airoha EN7523 Evaluation Board"; + compatible = "airoha,en7523-evb", "airoha,en7523"; + + aliases { + serial0 = &uart1; + }; + + chosen { + bootargs = "console=ttyS0,115200 earlycon"; + stdout-path = "serial0:115200n8"; + linux,usable-memory-range = <0x80200000 0x1fe00000>; + }; + + memory@80000000 { + device_type = "memory"; + reg = <0x80000000 0x20000000>; + }; +}; diff --git a/arch/arm/boot/dts/en7523.dtsi b/arch/arm/boot/dts/en7523.dtsi new file mode 100644 index 0000000..f1d4c03 --- /dev/null +++ b/arch/arm/boot/dts/en7523.dtsi @@ -0,0 +1,117 @@ +// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) + +#include +#include + +/ { + interrupt-parent = <&gic>; + #address-cells = <1>; + #size-cells = <1>; + + reserved-memory { + #address-cells = <1>; + #size-cells = <1>; + ranges; + + npu_binary@84000000 { + no-map; + reg = <0x84000000 0xA00000>; + }; + + npu_flag@84B0000 { + no-map; + reg = <0x84B00000 0x100000>; + }; + + npu_pkt@85000000 { + no-map; + reg = <0x85000000 0x1A00000>; + }; + + npu_phyaddr@86B00000 { + no-map; + reg = <0x86B00000 0x100000>; + }; + + npu_rxdesc@86D00000 { + no-map; + reg = <0x86D00000 0x100000>; + }; + }; + + psci { + compatible = "arm,psci-0.2"; + method = "smc"; + }; + + cpus { + #address-cells = <1>; + #size-cells = <0>; + + cpu-map { + cluster0 { + core0 { + cpu = <&cpu0>; + }; + core1 { + cpu = <&cpu1>; + }; + }; + }; + + cpu0: cpu@0 { + device_type = "cpu"; + compatible = "arm,cortex-a53"; + reg = <0x0>; + enable-method = "psci"; + clock-frequency = <80000000>; + next-level-cache = <&L2_0>; + }; + + cpu1: cpu@1 { + device_type = "cpu"; + compatible = "arm,cortex-a53"; + reg = <0x1>; + enable-method = "psci"; + clock-frequency = <80000000>; + next-level-cache = <&L2_0>; + }; + + L2_0: l2-cache0 { + compatible = "cache"; + }; + }; + + gic: interrupt-controller@9000000 { + compatible = "arm,gic-v3"; + interrupt-controller; + #interrupt-cells = <3>; + #address-cells = <1>; + #size-cells = <1>; + reg = <0x09000000 0x20000>, + <0x09080000 0x80000>, + <0x09400000 0x2000>, + <0x09500000 0x2000>, + <0x09600000 0x20000>; + interrupts = ; + }; + + timer { + compatible = "arm,armv8-timer"; + interrupt-parent = <&gic>; + interrupts = , + , + , + ; + }; + + uart1: serial@1fbf0000 { + compatible = "ns16550"; + reg = <0x1fbf0000 0x30>; + reg-io-width = <4>; + reg-shift = <2>; + interrupts = ; + clock-frequency = <1843200>; + status = "okay"; + }; +}; diff --git a/arch/arm/mach-airoha/Makefile b/arch/arm/mach-airoha/Makefile new file mode 100644 index 0000000..a5857d0 --- /dev/null +++ b/arch/arm/mach-airoha/Makefile @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0-only +obj-y += airoha.o diff --git a/arch/arm/mach-airoha/airoha.c b/arch/arm/mach-airoha/airoha.c new file mode 100644 index 0000000..ea23b5a --- /dev/null +++ b/arch/arm/mach-airoha/airoha.c @@ -0,0 +1,16 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Device Tree support for Airoha SoCs + * + * Copyright (c) 2022 Felix Fietkau + */ +#include + +static const char * const airoha_board_dt_compat[] = { + "airoha,en7523", + NULL, +}; + +DT_MACHINE_START(MEDIATEK_DT, "Airoha Cortex-A53 (Device Tree)") + .dt_compat = airoha_board_dt_compat, +MACHINE_END -- 2.7.4