linux-kernel - [PATCH 1/2] regmap: Add the DT binding documentation for endianness

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1396250797-17758-2-git-send-email-Li.Xiubo@freescale.com>
Date:	Mon, 31 Mar 2014 15:26:36 +0800
From:	Xiubo Li <Li.Xiubo@...escale.com>
To:	<broonie@...nel.org>
CC:	<gregkh@...uxfoundation.org>, <linux-doc@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, Xiubo Li <Li.Xiubo@...escale.com>
Subject: [PATCH 1/2] regmap: Add the DT binding documentation for endianness

Signed-off-by: Xiubo Li <Li.Xiubo@...escale.com>
---
 .../bindings/regmap/regmap-endianness.txt          | 49 ++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regmap/regmap-endianness.txt

diff --git a/Documentation/devicetree/bindings/regmap/regmap-endianness.txt b/Documentation/devicetree/bindings/regmap/regmap-endianness.txt
new file mode 100644
index 0000000..045d347
--- /dev/null
+++ b/Documentation/devicetree/bindings/regmap/regmap-endianness.txt
@@ -0,0 +1,49 @@
+Device-Tree bindings for regmap endianness
+
+Required properties:
+- reg-endian: Register endianness, this string property could be absent
+  as default endianness, or must be one of 'BE', 'LE' and 'NT'.
+- val-endian: Value endianness, this string property could be absent as
+  default endianness, or must be one of 'BE', 'LE' and 'NT'.
+
+The Endianness flags supported by regmap:
+
+DT properties           Macros
+----------------------------------------
+    'LE'          REGMAP_ENDIAN_LITTLE
+    'BE'          REGMAP_ENDIAN_BIG
+    'NT'          REGMAP_ENDIAN_NATIVE
+    Absent        REGMAP_ENDIAN_DEFAULT
+
+Examples:
+Case 1 : CPU in LE mode & SAI device in BE mode, using mmio.
+sai2: sai@...31000 {
+	      compatible = "fsl,vf610-sai";
+	      reg = <0x40031000 0x1000>;
+	      ...
+	      val-endian = 'BE';
+};
+
+Case 2 : CPU in BE mode & SAI device in LE mode, using mmio.
+sai2: sai@...31000 {
+	      compatible = "fsl,vf610-sai";
+	      reg = <0x40031000 0x1000>;
+	      ...
+	      val-endian = 'LE';
+};
+
+Case 3 : CPU in LE mode & SAI device in LE mode, using mmio.
+sai2: sai@...31000 {
+	      compatible = "fsl,vf610-sai";
+	      reg = <0x40031000 0x1000>;
+	      ...
+	      val-endian = 'NT'; or just absent.
+};
+
+Case 4 : CPU in BE mode & SAI device in BE mode, using mmio.
+sai2: sai@...31000 {
+	      compatible = "fsl,vf610-sai";
+	      reg = <0x40031000 0x1000>;
+	      ...
+	      val-endian = 'NT'; or just absent.
+};
-- 
1.8.4


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/