Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758616AbaDBKx6 (ORCPT ); Wed, 2 Apr 2014 06:53:58 -0400 Received: from [65.55.88.14] ([65.55.88.14]:47956 "EHLO tx2outboundpool.messaging.microsoft.com" rhost-flags-FAIL-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1758518AbaDBKxg (ORCPT ); Wed, 2 Apr 2014 06:53:36 -0400 X-Forefront-Antispam-Report: CIP:70.37.183.190;KIP:(null);UIP:(null);IPV:NLI;H:mail.freescale.net;RD:none;EFVD:NLI X-SpamScore: 0 X-BigFish: VS0(zzzz1f42h2148h1ee6h1de0h1fdah2073h2146h1202h1e76h2189h1d1ah1d2ah21bch1fc6h208chzz1de098h8275bh1de097hz2dh2a8h839he5bhf0ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1b2fh2222h224fh1fb3h1d0ch1d2eh1d3fh1dfeh1dffh1e23h1fe8h1ff5h2218h2216h226dh22d0h24afh2327h2336h2438h2461h2487h24d7h2516h2545h255eh25cch25f6h2605h268bh26d3h1155h) From: Xiubo Li To: CC: , , Xiubo Li Subject: [PATCHv2 2/3] regmap: Add the DT binding documentation for endianness Date: Wed, 2 Apr 2014 18:09:08 +0800 Message-ID: <1396433349-31470-3-git-send-email-Li.Xiubo@freescale.com> X-Mailer: git-send-email 1.8.0 In-Reply-To: <1396433349-31470-1-git-send-email-Li.Xiubo@freescale.com> References: <1396433349-31470-1-git-send-email-Li.Xiubo@freescale.com> MIME-Version: 1.0 Content-Type: text/plain X-OriginatorOrg: freescale.com X-FOPE-CONNECTOR: Id%0$Dn%*$RO%0$TLS%0$FQDN%$TlsDn% X-FOPE-CONNECTOR: Id%0$Dn%FREESCALE.MAIL.ONMICROSOFT.COM$RO%1$TLS%0$FQDN%$TlsDn% Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Xiubo Li --- .../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@40031000 { + 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@40031000 { + 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@40031000 { + 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@40031000 { + 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@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/