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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /arch/arm/mach-nspire
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/mach-nspire')
-rw-r--r--arch/arm/mach-nspire/Kconfig13
-rw-r--r--arch/arm/mach-nspire/Makefile2
-rw-r--r--arch/arm/mach-nspire/mmio.h16
-rw-r--r--arch/arm/mach-nspire/nspire.c42
4 files changed, 73 insertions, 0 deletions
diff --git a/arch/arm/mach-nspire/Kconfig b/arch/arm/mach-nspire/Kconfig
new file mode 100644
index 000000000..b7a387187
--- /dev/null
+++ b/arch/arm/mach-nspire/Kconfig
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config ARCH_NSPIRE
+ bool "TI-NSPIRE based"
+ depends on ARCH_MULTI_V4T
+ depends on CPU_LITTLE_ENDIAN
+ select CPU_ARM926T
+ select GENERIC_IRQ_CHIP
+ select ARM_AMBA
+ select ARM_VIC
+ select ARM_TIMER_SP804
+ select NSPIRE_TIMER
+ help
+ This enables support for systems using the TI-NSPIRE CPU
diff --git a/arch/arm/mach-nspire/Makefile b/arch/arm/mach-nspire/Makefile
new file mode 100644
index 000000000..4716b9b9a
--- /dev/null
+++ b/arch/arm/mach-nspire/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-y += nspire.o
diff --git a/arch/arm/mach-nspire/mmio.h b/arch/arm/mach-nspire/mmio.h
new file mode 100644
index 000000000..48e32f13f
--- /dev/null
+++ b/arch/arm/mach-nspire/mmio.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * linux/arch/arm/mach-nspire/mmio.h
+ *
+ * Copyright (C) 2013 Daniel Tang <tangrs@tangrs.id.au>
+ */
+
+#define NSPIRE_MISC_PHYS_BASE 0x900A0000
+#define NSPIRE_MISC_HWRESET 0x08
+
+#define NSPIRE_PWR_PHYS_BASE 0x900B0000
+#define NSPIRE_PWR_VIRT_BASE 0xFEEB0000
+#define NSPIRE_PWR_BUS_DISABLE1 0x18
+#define NSPIRE_PWR_BUS_DISABLE2 0x20
+
+#define NSPIRE_LCD_PHYS_BASE 0xC0000000
diff --git a/arch/arm/mach-nspire/nspire.c b/arch/arm/mach-nspire/nspire.c
new file mode 100644
index 000000000..2d4abb028
--- /dev/null
+++ b/arch/arm/mach-nspire/nspire.c
@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * linux/arch/arm/mach-nspire/nspire.c
+ *
+ * Copyright (C) 2013 Daniel Tang <tangrs@tangrs.id.au>
+ */
+#include <linux/init.h>
+#include <linux/of_irq.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/irqchip.h>
+#include <linux/irqchip/arm-vic.h>
+#include <linux/clkdev.h>
+#include <linux/amba/bus.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach-types.h>
+#include <asm/mach/map.h>
+
+#include "mmio.h"
+
+static const char *const nspire_dt_match[] __initconst = {
+ "ti,nspire",
+ "ti,nspire-cx",
+ "ti,nspire-tp",
+ "ti,nspire-clp",
+ NULL,
+};
+
+static void nspire_restart(enum reboot_mode mode, const char *cmd)
+{
+ void __iomem *base = ioremap(NSPIRE_MISC_PHYS_BASE, SZ_4K);
+ if (!base)
+ return;
+
+ writel(2, base + NSPIRE_MISC_HWRESET);
+}
+
+DT_MACHINE_START(NSPIRE, "TI-NSPIRE")
+ .dt_compat = nspire_dt_match,
+ .restart = nspire_restart,
+MACHINE_END