From patchwork Fri Jul 31 16:52:59 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Agner X-Patchwork-Id: 502753 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 2F8941402B6 for ; Sat, 1 Aug 2015 09:08:35 +1000 (AEST) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; secure) header.d=agner.ch header.i=@agner.ch header.b=HkL34pJS; dkim-atps=neutral Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753829AbbGaXId (ORCPT ); Fri, 31 Jul 2015 19:08:33 -0400 Received: from mail.kmu-office.ch ([178.209.48.109]:46796 "EHLO mail.kmu-office.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753273AbbGaXH3 (ORCPT ); Fri, 31 Jul 2015 19:07:29 -0400 Received: from trochilidae.toradex.int (unknown [46.140.72.82]) by mail.kmu-office.ch (Postfix) with ESMTPSA id B9DC45C1206; Fri, 31 Jul 2015 18:52:55 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=agner.ch; s=dkim; t=1438361576; bh=EhPkbds/rwOl57E2KeuO5C0Pduxk0e/SLWCtMAZAKO8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HkL34pJSHaJ9YFFC2icz2s6sucN4e0yRTj1URtDdw4ka2dsS2qn/SMTTEINF/4i6Q Ub0vvknL1otylN56EoG2+XDW1gkKhBWVgVnmNVJk57i1KmDt+rGQRwLcf+kJ329sBU VA+c3JICkaoK5WxmUlUA3AOg6ZE8pB8qmgdHmTZU= From: Stefan Agner To: dwmw2@infradead.org, computersforpeace@gmail.com Cc: sebastian@breakpoint.cc, robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org, shawn.guo@linaro.org, kernel@pengutronix.de, boris.brezillon@free-electrons.com, marb@ixxat.de, aaron@tastycactus.com, bpringlemeir@gmail.com, linux-mtd@lists.infradead.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, albert.aribaud@3adev.fr, Stefan Agner , Bill Pringlemeir Subject: [PATCH v9 3/5] mtd: nand: vf610_nfc: add device tree bindings Date: Fri, 31 Jul 2015 18:52:59 +0200 Message-Id: <1438361581-2702-4-git-send-email-stefan@agner.ch> X-Mailer: git-send-email 2.4.5 In-Reply-To: <1438361581-2702-1-git-send-email-stefan@agner.ch> References: <1438361581-2702-1-git-send-email-stefan@agner.ch> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Signed-off-by: Bill Pringlemeir Signed-off-by: Stefan Agner Reviewed-by: Brian Norris --- .../devicetree/bindings/mtd/vf610-nfc.txt | 45 ++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 Documentation/devicetree/bindings/mtd/vf610-nfc.txt diff --git a/Documentation/devicetree/bindings/mtd/vf610-nfc.txt b/Documentation/devicetree/bindings/mtd/vf610-nfc.txt new file mode 100644 index 0000000..cae5f25 --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/vf610-nfc.txt @@ -0,0 +1,45 @@ +Freescale's NAND flash controller (NFC) + +This variant of the Freescale NAND flash controller (NFC) can be found on +Vybrid (vf610), MPC5125, MCF54418 and Kinetis K70. + +Required properties: +- compatible: Should be set to "fsl,vf610-nfc" +- reg: address range of the NFC +- interrupts: interrupt of the NFC +- nand-bus-width: see nand.txt +- nand-ecc-mode: see nand.txt +- nand-on-flash-bbt: see nand.txt +- assigned-clocks: main clock from the SoC, for Vybrid <&clks VF610_CLK_NFC>; +- assigned-clock-rates: The NAND bus timing is derived from this clock + rate and should not exceed maximum timing for any NAND memory chip + in a board stuffing. Typical NAND memory timings derived from this + clock are found in the SoC hardware reference manual. Furthermore, + there might be restrictions on maximum rates when using hardware ECC. + +- #address-cells, #size-cells : Must be present if the device has sub-nodes + representing partitions. + +Required properties for hardware ECC: +- nand-ecc-strength: supported strengths are 24 and 32 bit (see nand.txt) +- nand-ecc-step-size: step size equals page size, currently only 2k pages are + supported + +Example: + + nfc: nand@400e0000 { + compatible = "fsl,vf610-nfc"; + #address-cells = <1>; + #size-cells = <1>; + reg = <0x400e0000 0x4000>; + interrupts = ; + clocks = <&clks VF610_CLK_NFC>; + clock-names = "nfc"; + assigned-clocks = <&clks VF610_CLK_NFC>; + assigned-clock-rates = <33000000>; + nand-bus-width = <8>; + nand-ecc-mode = "hw"; + nand-ecc-strength = <32>; + nand-ecc-step-size = <2048>; + nand-on-flash-bbt; + };