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Subject[PATCH v2 1/2] Documentation: update the of_selftest.txt
Date
Since the directory "drivers/of/testcase-data" is renamed
to "drivers/of/unittest-data". so we should update the path
in the of_selftest.txt.

When the kernel is built with OF_SELFUNIT enabled, the output
dtb is testcases.dtb instead of testcase.dtb, also update it
(s/testcase/testcases/).

Signed-off-by: Wang Long <long.wanglong@huawei.com>
---
Documentation/devicetree/of_selftest.txt | 28 ++++++++++++++--------------
1 file changed, 14 insertions(+), 14 deletions(-)

diff --git a/Documentation/devicetree/of_selftest.txt b/Documentation/devicetree/of_selftest.txt
index 57a808b..3e4e7d4 100644
--- a/Documentation/devicetree/of_selftest.txt
+++ b/Documentation/devicetree/of_selftest.txt
@@ -1,11 +1,11 @@
-Open Firmware Device Tree Selftest
+Open Firmware Device Tree Unittest
----------------------------------

Author: Gaurav Minocha <gaurav.minocha.os@gmail.com>

1. Introduction

-This document explains how the test data required for executing OF selftest
+This document explains how the test data required for executing OF unittest
is attached to the live tree dynamically, independent of the machine's
architecture.

@@ -22,31 +22,31 @@ most of the device drivers in various use cases.

2. Test-data

-The Device Tree Source file (drivers/of/testcase-data/testcases.dts) contains
+The Device Tree Source file (drivers/of/unittest-data/testcases.dts) contains
the test data required for executing the unit tests automated in
-drivers/of/selftests.c. Currently, following Device Tree Source Include files
-(.dtsi) are included in testcase.dts:
+drivers/of/unittest.c. Currently, following Device Tree Source Include files
+(.dtsi) are included in testcases.dts:

-drivers/of/testcase-data/tests-interrupts.dtsi
-drivers/of/testcase-data/tests-platform.dtsi
-drivers/of/testcase-data/tests-phandle.dtsi
-drivers/of/testcase-data/tests-match.dtsi
+drivers/of/unittest-data/tests-interrupts.dtsi
+drivers/of/unittest-data/tests-platform.dtsi
+drivers/of/unittest-data/tests-phandle.dtsi
+drivers/of/unittest-data/tests-match.dtsi

When the kernel is build with OF_SELFTEST enabled, then the following make rule

$(obj)/%.dtb: $(src)/%.dts FORCE
$(call if_changed_dep, dtc)

-is used to compile the DT source file (testcase.dts) into a binary blob
-(testcase.dtb), also referred as flattened DT.
+is used to compile the DT source file (testcases.dts) into a binary blob
+(testcases.dtb), also referred as flattened DT.

After that, using the following rule the binary blob above is wrapped as an
-assembly file (testcase.dtb.S).
+assembly file (testcases.dtb.S).

$(obj)/%.dtb.S: $(obj)/%.dtb
$(call cmd, dt_S_dtb)

-The assembly file is compiled into an object file (testcase.dtb.o), and is
+The assembly file is compiled into an object file (testcases.dtb.o), and is
linked into the kernel image.


@@ -98,7 +98,7 @@ child11 -> sibling12 -> sibling13 -> sibling14 -> null
Figure 1: Generic structure of un-flattened device tree


-Before executing OF selftest, it is required to attach the test data to
+Before executing OF unittest, it is required to attach the test data to
machine's device tree (if present). So, when selftest_data_add() is called,
at first it reads the flattened device tree data linked into the kernel image
via the following kernel symbols:
--
1.8.3.4


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