From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751136AbaDQUAC (ORCPT ); Thu, 17 Apr 2014 16:00:02 -0400 Received: from am1ehsobe005.messaging.microsoft.com ([213.199.154.208]:41249 "EHLO am1outboundpool.messaging.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750814AbaDQT6u (ORCPT ); Thu, 17 Apr 2014 15:58:50 -0400 X-Forefront-Antispam-Report: CIP:149.199.60.83;KIP:(null);UIP:(null);IPV:NLI;H:xsj-gw1;RD:unknown-60-83.xilinx.com;EFVD:NLI X-SpamScore: 9 X-BigFish: VPS9(z551bizzz1f42h2148h1ee6h1de0h1fdah2073h2146h1202h1e76h2189h1d1ah1d2ah21bch1fc6h208chzdch5ck70kz1de098h8275bh1de097hz2fh95h839hc61hd24hf0ah119dh1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h14ddh1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1b0ah224fh1d0ch1d2eh1d3fh1dfeh1dffh1e1dh1e23h1fe8h1ff5h2218h2216h226dh24afh2327h2336h2438h2461h2487h24d7h2516h2545h255eh25f6h2605h268bh26d3h906i2673i1155h) From: Punnaiah Choudary Kalluri To: , , , , , , , , , , , , , , , , , , , CC: , , , , , , Punnaiah Choudary Kalluri Subject: [PATCH RFC v2 1/4] Devicetree: Add pl353 smc controller devicetree binding information Date: Fri, 18 Apr 2014 01:28:37 +0530 X-Mailer: git-send-email 1.7.4 In-Reply-To: <1397764720-29846-1-git-send-email-punnaia@xilinx.com> References: <1397764720-29846-1-git-send-email-punnaia@xilinx.com> X-RCIS-Action: ALLOW MIME-Version: 1.0 Content-Type: text/plain Message-ID: X-OriginatorOrg: xilinx.com X-FOPE-CONNECTOR: Id%0$Dn%*$RO%0$TLS%0$FQDN%$TlsDn% Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add pl353 static memory controller devicetree binding information. Signed-off-by: Punnaiah Choudary Kalluri --- Changes in v2: - modified timing binding info as per onfi timing parameters - add suffix nano second as timing unit - modified the clock names as per the IP spec --- .../bindings/memory-controllers/pl353-smc.txt | 53 ++++++++++++++++++++ 1 files changed, 53 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/memory-controllers/pl353-smc.txt diff --git a/Documentation/devicetree/bindings/memory-controllers/pl353-smc.txt b/Documentation/devicetree/bindings/memory-controllers/pl353-smc.txt new file mode 100644 index 0000000..c1f011d --- /dev/null +++ b/Documentation/devicetree/bindings/memory-controllers/pl353-smc.txt @@ -0,0 +1,53 @@ +Device tree bindings for ARM PL353 static memory controller + +PL353 static memory controller supports two kinds of memory +interfaces.i.e NAND and SRAM/NOR interfaces. +The actual devices are instantiated from the child nodes of pl353 smc node. + +Required properties: +- compatible : Should be "arm,pl353-smc-r2p1" +- reg : Controller registers map and length. +- clock-names : List of input clock names - "memclk", "aclk" + (See clock bindings for details). +- clocks : Clock phandles (see clock bindings for details). +- address-cells : Address cells, must be 1. +- size-cells : Size cells. Must be 1. + +Child nodes: + For NAND the "arm,pl353-nand-r2p1" and for NOR the "cfi-flash" drivers are +supported as child nodes. + +Mandatory timing properties for child nodes: +- nand-tRC-ns : Read cycle time. +- nand-tWC-ns : Write cycle time. +- nand-tREA-ns : re_n assertion delay. +- nand-tWP-ns : we_n de-assertion delay. +- nand-tCLR-ns : Status read time +- nand-tAR-ns : ID read time +- nand-tRR-ns : busy to re_n + +for nand partition information please refer the below file +Documentation/devicetree/bindings/mtd/partition.txt + +Example: + pl353smcc_0: pl353smcc@e000e000 { + compatible = "arm,pl353-smcc-r2p1" + clock-names = "memclk", "aclk"; + clocks = <&clkc 11>, <&clkc 44>; + reg = <0xe000e000 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + ranges; + nand_0: nand@e1000000 { + compatible = "arm,pl353-nand-r2p1" + reg = <0xe1000000 0x1000000>; + nand-tRC-ns = <40>; + nand-tWC-ns = <40>; + nand-tREA-ns = <10>; + nand-tWP-ns = <20>; + nand-tCLR-ns = <20>; + nand-tAR-ns = <20>; + nand-tRR-ns = <40>; + (...) + }; + }; -- 1.7.4