From d9a15385467936649b6c2cfeb7ab377002ddce0f Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Thu, 29 Sep 2016 14:38:07 +0200 Subject: dts: update to v4.8-rc1 Signed-off-by: Sascha Hauer --- dts/Bindings/reserved-memory/ramoops.txt | 48 ++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 dts/Bindings/reserved-memory/ramoops.txt (limited to 'dts/Bindings/reserved-memory') diff --git a/dts/Bindings/reserved-memory/ramoops.txt b/dts/Bindings/reserved-memory/ramoops.txt new file mode 100644 index 0000000000..e81f821a21 --- /dev/null +++ b/dts/Bindings/reserved-memory/ramoops.txt @@ -0,0 +1,48 @@ +Ramoops oops/panic logger +========================= + +ramoops provides persistent RAM storage for oops and panics, so they can be +recovered after a reboot. This is a child-node of "/reserved-memory", and +is named "ramoops" after the backend, rather than "pstore" which is the +subsystem. + +Parts of this storage may be set aside for other persistent log buffers, such +as kernel log messages, or for optional ECC error-correction data. The total +size of these optional buffers must fit in the reserved region. + +Any remaining space will be used for a circular buffer of oops and panic +records. These records have a configurable size, with a size of 0 indicating +that they should be disabled. + +At least one of "record-size", "console-size", "ftrace-size", or "pmsg-size" +must be set non-zero, but are otherwise optional as listed below. + + +Required properties: + +- compatible: must be "ramoops" + +- reg: region of memory that is preserved between reboots + + +Optional properties: + +- ecc-size: enables ECC support and specifies ECC buffer size in bytes + (defaults to 0: no ECC) + +- record-size: maximum size in bytes of each dump done on oops/panic + (defaults to 0: disabled) + +- console-size: size in bytes of log buffer reserved for kernel messages + (defaults to 0: disabled) + +- ftrace-size: size in bytes of log buffer reserved for function tracing and + profiling (defaults to 0: disabled) + +- pmsg-size: size in bytes of log buffer reserved for userspace messages + (defaults to 0: disabled) + +- unbuffered: if present, use unbuffered mappings to map the reserved region + (defaults to buffered mappings) + +- no-dump-oops: if present, only dump panics (defaults to panics and oops) -- cgit v1.2.3