While the "device_type" property is still used and supported, it is
deprecated so it should be removed from examples in the documentation.
There is no value in encouraging developers to keep using that
property, so just quietly disappear it from examples, but leave its
explanation in the spec.
Signed-off-by: Robert P. J. Day <rpjday@xxxxxxxxxxxxxx>
---
according to the spec, that property is still marginally acceptable
for memory and cpu nodes, but it really has no place being used for
any other types of nodes.
diff --git a/source/devicenodes.rst b/source/devicenodes.rst
index b161f07..751a6a8 100644
--- a/source/devicenodes.rst
+++ b/source/devicenodes.rst
@@ -137,7 +137,6 @@ If the VLE storage attribute is supported, with VLE=0.
======================= ===== ========================= ===============================================
Property Name Usage Value Type Definition
======================= ===== ========================= ===============================================
- ``device_type`` R ``<string>`` Value shall be "memory"
``reg`` R ``<prop-encoded-array>`` Consists of an arbitrary number of address and
size pairs that specify the physical address
and size of the memory ranges.
@@ -171,7 +170,6 @@ and ``#size-cells = <2>``.
.. code-block:: dts
memory@0 {
- device_type = "memory";
reg = <0x000000000 0x00000000 0x00000000 0x80000000
0x000000001 0x00000000 0x00000001 0x00000000>;
};
@@ -181,11 +179,9 @@ and ``#size-cells = <2>``.
.. code-block:: dts
memory@0 {
- device_type = "memory";
reg = <0x000000000 0x00000000 0x00000000 0x80000000>;
};
memory@100000000 {
- device_type = "memory";
reg = <0x000000001 0x00000000 0x00000001 0x00000000>;
};
@@ -318,7 +314,6 @@ standard properties with specific applicable detail.
====================== ===== ================== ===============================================
Property Name Usage Value Type Definition
====================== ===== ================== ===============================================
- ``device_type`` | R | ``<string>`` Value shall be ``"cpu"``.
``reg`` R array The value of *reg* is a ``<prop-encoded-array>``
that defines a unique CPU/thread id for the
CPU/threads represented by the CPU node.
@@ -625,7 +620,6 @@ Here is an example of a ``/cpus`` node with one child cpu node:
#address-cells = <1>;
#size-cells = <0>;
cpu@0 {
- device_type = "cpu";
reg = <0>;
d-cache-block-size = <32>; // L1 - 32 bytes
i-cache-block-size = <32>; // L1 - 32 bytes
@@ -687,7 +681,6 @@ each with their own on-chip L2 and a shared L3.
#address-cells = <1>;
#size-cells = <0>;
cpu@0 {
- device_type = "cpu";
reg = <0>;
cache-unified;
cache-size = <0x8000>; // L1, 32KB
@@ -717,7 +710,6 @@ each with their own on-chip L2 and a shared L3.
};
cpu@1 {
- device_type = "cpu";
reg = <1>;
cache-unified;
cache-block-size = <32>;
diff --git a/source/devicetree-basics.rst b/source/devicetree-basics.rst
index ba4f0cb..67162d7 100644
--- a/source/devicetree-basics.rst
+++ b/source/devicetree-basics.rst
@@ -62,19 +62,16 @@ with properties and values inside each node.
#size-cells=\<0\>\l"]
"cpu@0" [ label="\N |
- device_type=\"cpu\"\l
reg=\<0\>\l
timebase-frequency=\<825000000\>\l
clock-frequency=\<825000000\>\l"]
"cpu@1" [ label="\N |
- device_type=\"cpu\"\l
reg=\<1\>\l
timebase-frequency=\<825000000\>\l
clock-frequency=\<825000000\>\l"]
"memory@0" [ label="\N |
- device_type=\"memory\"\l
reg=\<0 0x20000000\>\l"]
"uart@fe001000" [ label="\N |
@@ -738,7 +735,6 @@ Address Translation Example:
ranges = <0x0 0xe0000000 0x00100000>;
serial {
- device_type = "serial";
compatible = "ns16550";
reg = <0x4600 0x100>;
clock-frequency = <0>;
rday
--
========================================================================
Robert P. J. Day Ottawa, Ontario, CANADA
http://crashcourse.ca/dokuwiki
Twitter: http://twitter.com/rpjday
LinkedIn: http://ca.linkedin.com/in/rpjday
========================================================================
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