Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / arch / arm / mach-gemini / board-dt.c
blobde0afcc8d94a8e1e378fe37d4e55b1d656cefd45
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Gemini Device Tree boot support
4 */
5 #include <linux/kernel.h>
6 #include <linux/init.h>
7 #include <linux/io.h>
9 #include <asm/mach/arch.h>
10 #include <asm/mach/map.h>
11 #include <asm/system_misc.h>
12 #include <asm/proc-fns.h>
14 #ifdef CONFIG_DEBUG_GEMINI
15 /* This is needed for LL-debug/earlyprintk/debug-macro.S */
16 static struct map_desc gemini_io_desc[] __initdata = {
18 .virtual = CONFIG_DEBUG_UART_VIRT,
19 .pfn = __phys_to_pfn(CONFIG_DEBUG_UART_PHYS),
20 .length = SZ_4K,
21 .type = MT_DEVICE,
25 static void __init gemini_map_io(void)
27 iotable_init(gemini_io_desc, ARRAY_SIZE(gemini_io_desc));
29 #else
30 #define gemini_map_io NULL
31 #endif
33 static void gemini_idle(void)
36 * Because of broken hardware we have to enable interrupts or the CPU
37 * will never wakeup... Acctualy it is not very good to enable
38 * interrupts first since scheduler can miss a tick, but there is
39 * no other way around this. Platforms that needs it for power saving
40 * should enable it in init code, since by default it is
41 * disabled.
44 /* FIXME: Enabling interrupts here is racy! */
45 local_irq_enable();
46 cpu_do_idle();
49 static void __init gemini_init_machine(void)
51 arm_pm_idle = gemini_idle;
54 static const char *gemini_board_compat[] = {
55 "cortina,gemini",
56 NULL,
59 DT_MACHINE_START(GEMINI_DT, "Gemini (Device Tree)")
60 .map_io = gemini_map_io,
61 .init_machine = gemini_init_machine,
62 .dt_compat = gemini_board_compat,
63 MACHINE_END