Merge tag 'armsoc-newsoc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM new SoC family support from Arnd Bergmann:
 "Two new SoC families are added this time.

  Sugaya Taichi submitted support for the Milbeaut SoC family from
  Socionext and explains:

    "SC2000 is a SoC of the Milbeaut series. equipped with a DSP
     optimized for computer vision. It also features advanced
     functionalities such as 360-degree, real-time spherical stitching
     with multi cameras, image stabilization for without mechanical
     gimbals, and rolling shutter correction. More detail is below:

       https://www.socionext.com/en/products/assp/milbeaut/SC2000.html"

  Interestingly, this one has a history dating back to older chips made
  by Socionext and previously Matsushita/Panasonic based on their own
  mn10300 CPU architecture that was removed from the kernel last year.

  Manivannan Sadhasivam adds support for another SoC family, this is the
  Bitmain BM1880 chip used in the Sophon Edge TPU developer board.

  The chip is intended for Deep Learning applications, and comes with
  dual-core Arm Cortex-A53 to run Linux as well as a RISC-V
  microcontroller core to control the tensor unit. For the moment, the
  TPU is not accessible in mainline Linux, so we treat it as a generic
  Arm SoC.

  More information is available at

       https://www.sophon.ai/"

* tag 'armsoc-newsoc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  ARM: multi_v7_defconfig: add ARCH_MILBEAUT and ARCH_MILBEAUT_M10V
  ARM: configs: Add Milbeaut M10V defconfig
  ARM: dts: milbeaut: Add device tree set for the Milbeaut M10V board
  clocksource/drivers/timer-milbeaut: Introduce timer for Milbeaut SoCs
  dt-bindings: timer: Add Milbeaut M10V timer description
  ARM: milbeaut: Add basic support for Milbeaut m10v SoC
  dt-bindings: Add documentation for Milbeaut SoCs
  dt-bindings: arm: Add SMP enable-method for Milbeaut
  dt-bindings: sram: milbeaut: Add binding for Milbeaut smp-sram
  MAINTAINERS: Add entry for Bitmain SoC platform
  arm64: dts: bitmain: Add Sophon Egde board support
  arm64: dts: bitmain: Add BM1880 SoC support
  arm64: Add ARCH_BITMAIN platform
  dt-bindings: arm: Document Bitmain BM1880 SoC

10 files changed, 416 insertions, 0 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index b5956a175515..83f724e5a056 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -751,6 +751,8 @@ source "arch/arm/mach-mediatek/Kconfig"
 
 source "arch/arm/mach-meson/Kconfig"
 
+source "arch/arm/mach-milbeaut/Kconfig"
+
 source "arch/arm/mach-mmp/Kconfig"
 
 source "arch/arm/mach-moxart/Kconfig"
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 9db3c584b2cb..00000e91ad65 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -190,6 +190,7 @@ machine-$(CONFIG_ARCH_MV78XX0)		+= mv78xx0
 machine-$(CONFIG_ARCH_MVEBU)		+= mvebu
 machine-$(CONFIG_ARCH_MXC)		+= imx
 machine-$(CONFIG_ARCH_MEDIATEK)		+= mediatek
+machine-$(CONFIG_ARCH_MILBEAUT)		+= milbeaut
 machine-$(CONFIG_ARCH_MXS)		+= mxs
 machine-$(CONFIG_ARCH_NETX)		+= netx
 machine-$(CONFIG_ARCH_NOMADIK)		+= nomadik
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index ebe409a3f0e6..f4f5aeaf3298 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1246,6 +1246,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += \
 	mt7623n-bananapi-bpi-r2.dtb \
 	mt8127-moose.dtb \
 	mt8135-evbp1.dtb
+dtb-$(CONFIG_ARCH_MILBEAUT) += milbeaut-m10v-evb.dtb
 dtb-$(CONFIG_ARCH_ZX) += zx296702-ad1.dtb
 dtb-$(CONFIG_ARCH_ASPEED) += \
 	aspeed-ast2500-evb.dtb \
diff --git a/arch/arm/boot/dts/milbeaut-m10v-evb.dts b/arch/arm/boot/dts/milbeaut-m10v-evb.dts
new file mode 100644
index 000000000000..614f60c6b0a2
--- /dev/null
+++ b/arch/arm/boot/dts/milbeaut-m10v-evb.dts
@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Socionext Milbeaut M10V Evaluation Board */
+/dts-v1/;
+#include "milbeaut-m10v.dtsi"
+
+/ {
+	model = "Socionext M10V EVB";
+	compatible = "socionext,milbeaut-m10v-evb", "socionext,sc2000a";
+
+	aliases {
+		serial0 = &uart1;
+	};
+
+	chosen {
+		bootargs = "rootwait earlycon";
+		stdout-path = "serial0:115200n8";
+	};
+
+	clocks {
+		uclk40xi: uclk40xi {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <40000000>;
+		};
+	};
+
+	memory@40000000 {
+		device_type = "memory";
+		reg = <0x40000000  0x80000000>;
+	};
+
+};
diff --git a/arch/arm/boot/dts/milbeaut-m10v.dtsi b/arch/arm/boot/dts/milbeaut-m10v.dtsi
new file mode 100644
index 000000000000..aa7c6caeb750
--- /dev/null
+++ b/arch/arm/boot/dts/milbeaut-m10v.dtsi
@@ -0,0 +1,95 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+	compatible = "socionext,sc2000a";
+	interrupt-parent = <&gic>;
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		enable-method = "socionext,milbeaut-m10v-smp";
+		cpu@f00 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a7";
+			reg = <0xf00>;
+		};
+		cpu@f01 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a7";
+			reg = <0xf01>;
+		};
+		cpu@f02 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a7";
+			reg = <0xf02>;
+		};
+		cpu@f03 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a7";
+			reg = <0xf03>;
+		};
+	};
+
+	timer { /* The Generic Timer */
+		compatible = "arm,armv7-timer";
+		interrupts = <GIC_PPI 13
+				(GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>,
+			<GIC_PPI 14
+				(GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>,
+			<GIC_PPI 11
+				(GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>,
+			<GIC_PPI 10
+				(GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
+		clock-frequency = <40000000>;
+		always-on;
+	};
+
+	soc {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+		interrupt-parent = <&gic>;
+
+		gic: interrupt-controller@1d000000 {
+			compatible = "arm,cortex-a7-gic";
+			interrupt-controller;
+			#interrupt-cells = <3>;
+			reg = <0x1d001000 0x1000>,
+			      <0x1d002000 0x1000>; /* CPU I/f base and size */
+		};
+
+		timer@1e000050 { /* 32-bit Reload Timers */
+			compatible = "socionext,milbeaut-timer";
+			reg = <0x1e000050 0x20>;
+			interrupts = <0 91 4>;
+		};
+
+		uart1: serial@1e700010 { /* PE4, PE5 */
+			/* Enable this as ttyUSI0 */
+			compatible = "socionext,milbeaut-usio-uart";
+			reg = <0x1e700010 0x10>;
+			interrupts = <0 141 0x4>, <0 149 0x4>;
+			interrupt-names = "rx", "tx";
+		};
+
+	};
+
+	sram@0 {
+		compatible = "mmio-sram";
+		reg = <0x0 0x10000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0 0x0 0x10000>;
+		smp-sram@f100 {
+			compatible = "socionext,milbeaut-smp-sram";
+			reg = <0xf100 0x20>;
+		};
+	};
+};
diff --git a/arch/arm/configs/milbeaut_m10v_defconfig b/arch/arm/configs/milbeaut_m10v_defconfig
new file mode 100644
index 000000000000..7c07f9893a0f
--- /dev/null
+++ b/arch/arm/configs/milbeaut_m10v_defconfig
@@ -0,0 +1,119 @@
+CONFIG_SYSVIPC=y
+CONFIG_NO_HZ=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_CGROUPS=y
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_EMBEDDED=y
+CONFIG_PERF_EVENTS=y
+CONFIG_ARCH_MILBEAUT=y
+CONFIG_ARCH_MILBEAUT_M10V=y
+CONFIG_ARM_THUMBEE=y
+# CONFIG_VDSO is not set
+# CONFIG_CACHE_L2X0 is not set
+CONFIG_ARM_ERRATA_430973=y
+CONFIG_ARM_ERRATA_720789=y
+CONFIG_ARM_ERRATA_754322=y
+CONFIG_ARM_ERRATA_754327=y
+CONFIG_ARM_ERRATA_764369=y
+CONFIG_ARM_ERRATA_775420=y
+CONFIG_ARM_ERRATA_798181=y
+CONFIG_SMP=y
+# CONFIG_SMP_ON_UP is not set
+# CONFIG_ARM_CPU_TOPOLOGY is not set
+CONFIG_HAVE_ARM_ARCH_TIMER=y
+CONFIG_NR_CPUS=16
+CONFIG_THUMB2_KERNEL=y
+# CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11 is not set
+# CONFIG_ARM_PATCH_IDIV is not set
+CONFIG_HIGHMEM=y
+CONFIG_FORCE_MAX_ZONEORDER=12
+CONFIG_SECCOMP=y
+CONFIG_KEXEC=y
+CONFIG_EFI=y
+CONFIG_CPU_FREQ=y
+CONFIG_CPU_FREQ_STAT=y
+CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
+CONFIG_CPU_FREQ_GOV_POWERSAVE=m
+CONFIG_CPU_FREQ_GOV_USERSPACE=m
+CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m
+CONFIG_CPU_FREQ_GOV_SCHEDUTIL=y
+CONFIG_CPUFREQ_DT=y
+CONFIG_QORIQ_CPUFREQ=y
+CONFIG_CPU_IDLE=y
+CONFIG_ARM_CPUIDLE=y
+CONFIG_VFP=y
+CONFIG_NEON=y
+CONFIG_KERNEL_MODE_NEON=y
+CONFIG_EFI_VARS=m
+CONFIG_EFI_CAPSULE_LOADER=m
+CONFIG_ARM_CRYPTO=y
+CONFIG_CRYPTO_SHA1_ARM_NEON=m
+CONFIG_CRYPTO_SHA1_ARM_CE=m
+CONFIG_CRYPTO_SHA2_ARM_CE=m
+CONFIG_CRYPTO_SHA512_ARM=m
+CONFIG_CRYPTO_AES_ARM=m
+CONFIG_CRYPTO_AES_ARM_BS=m
+CONFIG_CRYPTO_AES_ARM_CE=m
+CONFIG_CRYPTO_GHASH_ARM_CE=m
+CONFIG_CRYPTO_CRC32_ARM_CE=m
+CONFIG_CRYPTO_CHACHA20_NEON=m
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+CONFIG_PARTITION_ADVANCED=y
+CONFIG_CMDLINE_PARTITION=y
+CONFIG_CMA=y
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_DMA_CMA=y
+CONFIG_CMA_SIZE_MBYTES=64
+CONFIG_OF_OVERLAY=y
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_SIZE=65536
+CONFIG_SRAM=y
+CONFIG_INPUT_FF_MEMLESS=m
+CONFIG_INPUT_MATRIXKMAP=y
+# CONFIG_INPUT_KEYBOARD is not set
+# CONFIG_INPUT_MOUSE is not set
+CONFIG_SERIO_LIBPS2=y
+CONFIG_VT_HW_CONSOLE_BINDING=y
+CONFIG_SERIAL_DEV_BUS=y
+# CONFIG_HW_RANDOM is not set
+CONFIG_GPIOLIB=y
+CONFIG_GPIO_GENERIC_PLATFORM=y
+# CONFIG_HWMON is not set
+CONFIG_MEDIA_SUPPORT=m
+CONFIG_MEDIA_CAMERA_SUPPORT=y
+CONFIG_MEDIA_CONTROLLER=y
+# CONFIG_MEDIA_SUBDRV_AUTOSELECT is not set
+# CONFIG_HID is not set
+# CONFIG_USB_SUPPORT is not set
+CONFIG_SYNC_FILE=y
+# CONFIG_VIRTIO_MENU is not set
+# CONFIG_IOMMU_SUPPORT is not set
+CONFIG_SOC_BRCMSTB=y
+CONFIG_MEMORY=y
+# CONFIG_ARM_PMU is not set
+CONFIG_EXT4_FS=y
+CONFIG_AUTOFS4_FS=y
+CONFIG_MSDOS_FS=y
+CONFIG_VFAT_FS=y
+CONFIG_NTFS_FS=y
+CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_CONFIGFS_FS=y
+# CONFIG_MISC_FILESYSTEMS is not set
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_ISO8859_1=y
+CONFIG_NLS_UTF8=y
+CONFIG_KEYS=y
+CONFIG_CRYPTO_MANAGER=y
+# CONFIG_CRYPTO_MANAGER_DISABLE_TESTS is not set
+CONFIG_CRYPTO_SEQIV=m
+# CONFIG_CRYPTO_ECHAINIV is not set
+CONFIG_CRYPTO_AES=y
+# CONFIG_CRYPTO_HW is not set
+CONFIG_CRC_CCITT=m
+CONFIG_CRC_ITU_T=m
+CONFIG_PRINTK_TIME=y
+CONFIG_MAGIC_SYSRQ=y
diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig
index 5b725657529a..c75051b9392c 100644
--- a/arch/arm/configs/multi_v7_defconfig
+++ b/arch/arm/configs/multi_v7_defconfig
@@ -54,6 +54,8 @@ CONFIG_SOC_VF610=y
 CONFIG_ARCH_KEYSTONE=y
 CONFIG_ARCH_MEDIATEK=y
 CONFIG_ARCH_MESON=y
+CONFIG_ARCH_MILBEAUT=y
+CONFIG_ARCH_MILBEAUT_M10V=y
 CONFIG_ARCH_MVEBU=y
 CONFIG_MACH_ARMADA_370=y
 CONFIG_MACH_ARMADA_375=y
diff --git a/arch/arm/mach-milbeaut/Kconfig b/arch/arm/mach-milbeaut/Kconfig
new file mode 100644
index 000000000000..6a576fd8521e
--- /dev/null
+++ b/arch/arm/mach-milbeaut/Kconfig
@@ -0,0 +1,20 @@
+# SPDX-License-Identifier: GPL-2.0
+menuconfig ARCH_MILBEAUT
+	bool "Socionext Milbeaut SoCs"
+	depends on ARCH_MULTI_V7
+	select ARM_GIC
+	help
+	  This enables support for Socionext Milbeaut SoCs
+
+if ARCH_MILBEAUT
+
+config ARCH_MILBEAUT_M10V
+	bool "Milbeaut SC2000/M10V platform"
+	select ARM_ARCH_TIMER
+	select MILBEAUT_TIMER
+	select PINCTRL
+	select PINCTRL_MILBEAUT
+	help
+	  Support for Socionext's MILBEAUT M10V based systems
+
+endif
diff --git a/arch/arm/mach-milbeaut/Makefile b/arch/arm/mach-milbeaut/Makefile
new file mode 100644
index 000000000000..ce5ea062047a
--- /dev/null
+++ b/arch/arm/mach-milbeaut/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_SMP) += platsmp.o
diff --git a/arch/arm/mach-milbeaut/platsmp.c b/arch/arm/mach-milbeaut/platsmp.c
new file mode 100644
index 000000000000..591543c81399
--- /dev/null
+++ b/arch/arm/mach-milbeaut/platsmp.c
@@ -0,0 +1,143 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright:	(C) 2018 Socionext Inc.
+ * Copyright:	(C) 2015 Linaro Ltd.
+ */
+
+#include <linux/cpu_pm.h>
+#include <linux/irqchip/arm-gic.h>
+#include <linux/of_address.h>
+#include <linux/suspend.h>
+
+#include <asm/cacheflush.h>
+#include <asm/cp15.h>
+#include <asm/idmap.h>
+#include <asm/smp_plat.h>
+#include <asm/suspend.h>
+
+#define M10V_MAX_CPU	4
+#define KERNEL_UNBOOT_FLAG	0x12345678
+
+static void __iomem *m10v_smp_base;
+
+static int m10v_boot_secondary(unsigned int l_cpu, struct task_struct *idle)
+{
+	unsigned int mpidr, cpu, cluster;
+
+	if (!m10v_smp_base)
+		return -ENXIO;
+
+	mpidr = cpu_logical_map(l_cpu);
+	cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0);
+	cluster = MPIDR_AFFINITY_LEVEL(mpidr, 1);
+
+	if (cpu >= M10V_MAX_CPU)
+		return -EINVAL;
+
+	pr_info("%s: cpu %u l_cpu %u cluster %u\n",
+			__func__, cpu, l_cpu, cluster);
+
+	writel(__pa_symbol(secondary_startup), m10v_smp_base + cpu * 4);
+	arch_send_wakeup_ipi_mask(cpumask_of(l_cpu));
+
+	return 0;
+}
+
+static void m10v_smp_init(unsigned int max_cpus)
+{
+	unsigned int mpidr, cpu, cluster;
+	struct device_node *np;
+
+	np = of_find_compatible_node(NULL, NULL, "socionext,milbeaut-smp-sram");
+	if (!np)
+		return;
+
+	m10v_smp_base = of_iomap(np, 0);
+	if (!m10v_smp_base)
+		return;
+
+	mpidr = read_cpuid_mpidr();
+	cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0);
+	cluster = MPIDR_AFFINITY_LEVEL(mpidr, 1);
+	pr_info("MCPM boot on cpu_%u cluster_%u\n", cpu, cluster);
+
+	for (cpu = 0; cpu < M10V_MAX_CPU; cpu++)
+		writel(KERNEL_UNBOOT_FLAG, m10v_smp_base + cpu * 4);
+}
+
+static void m10v_cpu_die(unsigned int l_cpu)
+{
+	gic_cpu_if_down(0);
+	v7_exit_coherency_flush(louis);
+	wfi();
+}
+
+static int m10v_cpu_kill(unsigned int l_cpu)
+{
+	unsigned int mpidr, cpu;
+
+	mpidr = cpu_logical_map(l_cpu);
+	cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0);
+
+	writel(KERNEL_UNBOOT_FLAG, m10v_smp_base + cpu * 4);
+
+	return 1;
+}
+
+static struct smp_operations m10v_smp_ops __initdata = {
+	.smp_prepare_cpus	= m10v_smp_init,
+	.smp_boot_secondary	= m10v_boot_secondary,
+	.cpu_die		= m10v_cpu_die,
+	.cpu_kill		= m10v_cpu_kill,
+};
+CPU_METHOD_OF_DECLARE(m10v_smp, "socionext,milbeaut-m10v-smp", &m10v_smp_ops);
+
+static int m10v_pm_valid(suspend_state_t state)
+{
+	return (state == PM_SUSPEND_STANDBY) || (state == PM_SUSPEND_MEM);
+}
+
+typedef void (*phys_reset_t)(unsigned long);
+static phys_reset_t phys_reset;
+
+static int m10v_die(unsigned long arg)
+{
+	setup_mm_for_reboot();
+	asm("wfi");
+	/* Boot just like a secondary */
+	phys_reset = (phys_reset_t)(unsigned long)virt_to_phys(cpu_reset);
+	phys_reset(virt_to_phys(cpu_resume));
+
+	return 0;
+}
+
+static int m10v_pm_enter(suspend_state_t state)
+{
+	switch (state) {
+	case PM_SUSPEND_STANDBY:
+		asm("wfi");
+		break;
+	case PM_SUSPEND_MEM:
+		cpu_pm_enter();
+		cpu_suspend(0, m10v_die);
+		cpu_pm_exit();
+		break;
+	}
+	return 0;
+}
+
+static const struct platform_suspend_ops m10v_pm_ops = {
+	.valid		= m10v_pm_valid,
+	.enter		= m10v_pm_enter,
+};
+
+struct clk *m10v_clclk_register(struct device *cpu_dev);
+
+static int __init m10v_pm_init(void)
+{
+	if (of_machine_is_compatible("socionext,milbeaut-evb"))
+		suspend_set_ops(&m10v_pm_ops);
+
+	return 0;
+}
+late_initcall(m10v_pm_init);