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ARM: exynos: set system_rev from DT revision

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With this patch "revision" DT string entry is used to set global
system_rev variable. This information uses to detect board type in
wiringPi library. Revision '0x0100' means this board is ODROID-XU3/4.

Change-Id: Id6b0e55d20d35882b7e9ab056a0fef2a09a71a3a
Signed-off-by: Brian Kim <brian.kim@hardkernel.com>
This commit is contained in:
Brian Kim
2017-01-02 17:34:08 +09:00
parent d1822407d9
commit 60bd7a6fca
2 changed files with 10 additions and 0 deletions
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2
arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi
View File

@@ -21,6 +21,8 @@
#include "exynos-mfc-reserved-memory.dtsi"
/ {
revision = <0x0100>;
memory@40000000 {
device_type = "memory";
reg = <0x40000000 0x7EA00000>;

8
arch/arm/mach-exynos/exynos.c
View File

@@ -22,6 +22,7 @@
#include <asm/hardware/cache-l2x0.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/system_info.h>
#include <mach/map.h>
#include <plat/cpu.h>
@@ -48,6 +49,11 @@ static struct platform_device exynos_cpuidle = {
void __iomem *sysram_base_addr;
void __iomem *sysram_ns_base_addr;
static void __init exynos_get_revision(void)
{
of_property_read_u32(of_root, "revision", &system_rev);
}
void __init exynos_sysram_init(void)
{
struct device_node *node;
@@ -65,6 +71,8 @@ void __init exynos_sysram_init(void)
sysram_ns_base_addr = of_iomap(node, 0);
break;
}
exynos_get_revision();
}
static void __init exynos_init_late(void)