aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/brcm2708/patches-4.4/0013-ARM-bcm2835-Set-Serial-number-and-Revision.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0013-ARM-bcm2835-Set-Serial-number-and-Revision.patch')
-rw-r--r--target/linux/brcm2708/patches-4.4/0013-ARM-bcm2835-Set-Serial-number-and-Revision.patch58
1 files changed, 58 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0013-ARM-bcm2835-Set-Serial-number-and-Revision.patch b/target/linux/brcm2708/patches-4.4/0013-ARM-bcm2835-Set-Serial-number-and-Revision.patch
new file mode 100644
index 0000000000..e2b55b654d
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0013-ARM-bcm2835-Set-Serial-number-and-Revision.patch
@@ -0,0 +1,58 @@
+From e04c4837cde13f4782fc5a274599f580d8a29715 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
+Date: Wed, 3 Jun 2015 12:26:13 +0200
+Subject: [PATCH 013/127] ARM: bcm2835: Set Serial number and Revision
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The VideoCore bootloader passes in Serial number and
+Revision number through Device Tree. Make these available to
+userspace through /proc/cpuinfo.
+
+Mainline status:
+
+There is a commit in linux-next that standardize passing the serial
+number through Device Tree (string: /serial-number):
+ARM: 8355/1: arch: Show the serial number from devicetree in cpuinfo
+
+There was an attempt to do the same with the revision number, but it
+didn't get in:
+[PATCH v2 1/2] arm: devtree: Set system_rev from DT revision
+
+Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
+---
+ arch/arm/mach-bcm/board_bcm2835.c | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+--- a/arch/arm/mach-bcm/board_bcm2835.c
++++ b/arch/arm/mach-bcm/board_bcm2835.c
+@@ -17,12 +17,16 @@
+ #include <linux/of_address.h>
+ #include <linux/of_platform.h>
+ #include <linux/clk/bcm2835.h>
++#include <asm/system_info.h>
+
+ #include <asm/mach/arch.h>
+ #include <asm/mach/map.h>
+
+ static void __init bcm2835_init(void)
+ {
++ struct device_node *np = of_find_node_by_path("/system");
++ u32 val;
++ u64 val64;
+ int ret;
+
+ bcm2835_init_clocks();
+@@ -33,6 +37,11 @@ static void __init bcm2835_init(void)
+ pr_err("of_platform_populate failed: %d\n", ret);
+ BUG();
+ }
++
++ if (!of_property_read_u32(np, "linux,revision", &val))
++ system_rev = val;
++ if (!of_property_read_u64(np, "linux,serial", &val64))
++ system_serial_low = val64;
+ }
+
+ static const char * const bcm2835_compat[] = {