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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-hisi/hisilicon.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/mach-hisi/hisilicon.c')
-rw-r--r--arch/arm/mach-hisi/hisilicon.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/arch/arm/mach-hisi/hisilicon.c b/arch/arm/mach-hisi/hisilicon.c
new file mode 100644
index 000000000..b8d14b369
--- /dev/null
+++ b/arch/arm/mach-hisi/hisilicon.c
@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * (HiSilicon's SoC based) flattened device tree enabled machine
+ *
+ * Copyright (c) 2012-2013 HiSilicon Ltd.
+ * Copyright (c) 2012-2013 Linaro Ltd.
+ *
+ * Author: Haojian Zhuang <haojian.zhuang@linaro.org>
+*/
+
+#include <linux/clocksource.h>
+#include <linux/irqchip.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#define HI3620_SYSCTRL_PHYS_BASE 0xfc802000
+#define HI3620_SYSCTRL_VIRT_BASE 0xfe802000
+
+/*
+ * This table is only for optimization. Since ioremap() could always share
+ * the same mapping if it's defined as static IO mapping.
+ *
+ * Without this table, system could also work. The cost is some virtual address
+ * spaces wasted since ioremap() may be called multi times for the same
+ * IO space.
+ */
+static struct map_desc hi3620_io_desc[] __initdata = {
+ {
+ /* sysctrl */
+ .pfn = __phys_to_pfn(HI3620_SYSCTRL_PHYS_BASE),
+ .virtual = HI3620_SYSCTRL_VIRT_BASE,
+ .length = 0x1000,
+ .type = MT_DEVICE,
+ },
+};
+
+static void __init hi3620_map_io(void)
+{
+ debug_ll_io_init();
+ iotable_init(hi3620_io_desc, ARRAY_SIZE(hi3620_io_desc));
+}
+
+static const char *const hi3xxx_compat[] __initconst = {
+ "hisilicon,hi3620-hi4511",
+ NULL,
+};
+
+DT_MACHINE_START(HI3620, "Hisilicon Hi3620 (Flattened Device Tree)")
+ .map_io = hi3620_map_io,
+ .dt_compat = hi3xxx_compat,
+MACHINE_END