lkml.org 
[lkml]   [2020]   [Feb]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
Subject[PATCH v3 3/3] dt-bindings: pmem-region: Document memory-region
From
From: Kenny Root <kroot@google.com>

Add documentation and example for memory-region in pmem.

Signed-off-by: Kenny Root <kroot@google.com>
Signed-off-by: Alistair Delva <adelva@google.com>
Cc: "Oliver O'Halloran" <oohall@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: devicetree@vger.kernel.org
Cc: linux-nvdimm@lists.01.org
Cc: kernel-team@android.com
---
[v3: adelva: remove duplicate "From:"]
.../devicetree/bindings/pmem/pmem-region.txt | 29 +++++++++++++++++++
1 file changed, 29 insertions(+)

diff --git a/Documentation/devicetree/bindings/pmem/pmem-region.txt b/Documentation/devicetree/bindings/pmem/pmem-region.txt
index 5cfa4f016a00..0ec87bd034e0 100644
--- a/Documentation/devicetree/bindings/pmem/pmem-region.txt
+++ b/Documentation/devicetree/bindings/pmem/pmem-region.txt
@@ -29,6 +29,18 @@ Required properties:
in a separate device node. Having multiple address ranges in a
node implies no special relationship between the two ranges.

+ This property may be replaced or supplemented with a
+ memory-region property. Only one of reg or memory-region
+ properties is required.
+
+ - memory-region:
+ Reference to the reserved memory node. The reserved memory
+ node should be defined as per the bindings in
+ reserved-memory.txt
+
+ This property may be replaced or supplemented with a reg
+ property. Only one of reg or memory-region is required.
+
Optional properties:
- Any relevant NUMA assocativity properties for the target platform.

@@ -63,3 +75,20 @@ Examples:
volatile;
};

+
+ /*
+ * This example uses a reserved-memory entry instead of
+ * specifying the memory region directly in the node.
+ */
+
+ reserved-memory {
+ pmem_1: pmem@5000 {
+ no-map;
+ reg = <0x00005000 0x00001000>;
+ };
+ };
+
+ pmem@1 {
+ compatible = "pmem-region";
+ memory-region = <&pmem_1>;
+ };
--
2.25.0.265.gbab2e86ba0-goog
\
 
 \ /
  Last update: 2020-02-24 03:11    [W:0.040 / U:15.268 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site