From patchwork Wed Aug 19 04:49:04 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Archit Taneja X-Patchwork-Id: 508564 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3640D140562 for ; Wed, 19 Aug 2015 14:50:47 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752556AbbHSEuc (ORCPT ); Wed, 19 Aug 2015 00:50:32 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:48416 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751426AbbHSEt0 (ORCPT ); Wed, 19 Aug 2015 00:49:26 -0400 Received: from smtp.codeaurora.org (localhost [127.0.0.1]) by smtp.codeaurora.org (Postfix) with ESMTP id D5D75140258; Wed, 19 Aug 2015 04:49:25 +0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 486) id C603A140271; Wed, 19 Aug 2015 04:49:25 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-caf-smtp.dmz.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=ALL_TRUSTED,BAYES_00 autolearn=ham version=3.3.1 Received: from localhost (unknown [202.46.23.61]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: architt@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 84B11140260; Wed, 19 Aug 2015 04:49:24 +0000 (UTC) From: Archit Taneja To: linux-mtd@lists.infradead.org, dehrenberg@google.com, cernekee@gmail.com, computersforpeace@gmail.com, sboyd@codeaurora.org Cc: linux-arm-msm@vger.kernel.org, agross@codeaurora.org, linux-kernel@vger.kernel.org, Archit Taneja , devicetree@vger.kernel.org Subject: [PATCH v4 3/5] dt/bindings: qcom_nandc: Add DT bindings Date: Wed, 19 Aug 2015 10:19:04 +0530 Message-Id: <1439959746-25498-4-git-send-email-architt@codeaurora.org> X-Mailer: git-send-email 1.8.2.1 In-Reply-To: <1439959746-25498-1-git-send-email-architt@codeaurora.org> References: <1438578498-32254-1-git-send-email-architt@codeaurora.org> <1439959746-25498-1-git-send-email-architt@codeaurora.org> X-Virus-Scanned: ClamAV using ClamSMTP Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add DT bindings document for the Qualcomm NAND controller driver. Cc: devicetree@vger.kernel.org v4: - No changes v3: - Don't use '0x' when specifying nand controller address space - Add optional property for on-flash bbt usage Acked-by: Andy Gross Signed-off-by: Archit Taneja --- .../devicetree/bindings/mtd/qcom_nandc.txt | 49 ++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 Documentation/devicetree/bindings/mtd/qcom_nandc.txt diff --git a/Documentation/devicetree/bindings/mtd/qcom_nandc.txt b/Documentation/devicetree/bindings/mtd/qcom_nandc.txt new file mode 100644 index 0000000..1de4643 --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/qcom_nandc.txt @@ -0,0 +1,49 @@ +* Qualcomm NAND controller + +Required properties: +- compatible: should be "qcom,ebi2-nand" for IPQ806x +- reg: MMIO address range +- clocks: must contain core clock and always on clock +- clock-names: must contain "core" for the core clock and "aon" for the + always on clock +- dmas: DMA specifier, consisting of a phandle to the ADM DMA + controller node and the channel number to be used for + NAND. Refer to dma.txt and qcom_adm.txt for more details +- dma-names: must be "rxtx" +- qcom,cmd-crci: must contain the ADM command type CRCI block instance + number specified for the NAND controller on the given + platform +- qcom,data-crci: must contain the ADM data type CRCI block instance + number specified for the NAND controller on the given + platform + +Optional properties: +- nand-bus-width: bus width. Must be 8 or 16. If not present, 8 is chosen + as default + +- nand-ecc-strength: number of bits to correct per ECC step. Must be 4 or 8 + bits. If not present, 4 is chosen as default +- nand-on-flash-bbt: Create/use on-flash bad block table + +The device tree may optionally contain sub-nodes describing partitions of the +address space. See partition.txt for more detail. + +Example: + +nand@1ac00000 { + compatible = "qcom,ebi2-nandc"; + reg = <0x1ac00000 0x800>; + + clocks = <&gcc EBI2_CLK>, + <&gcc EBI2_AON_CLK>; + clock-names = "core", "aon"; + + dmas = <&adm_dma 3>; + dma-names = "rxtx"; + qcom,cmd-crci = <15>; + qcom,data-crci = <3>; + + partition@0 { + ... + }; +};