From patchwork Fri Jul 18 12:30:05 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Antoine Tenart X-Patchwork-Id: 371501 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 6EC22140132 for ; Fri, 18 Jul 2014 22:31:38 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761996AbaGRMbG (ORCPT ); Fri, 18 Jul 2014 08:31:06 -0400 Received: from top.free-electrons.com ([176.31.233.9]:40766 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1761664AbaGRMaQ (ORCPT ); Fri, 18 Jul 2014 08:30:16 -0400 Received: by mail.free-electrons.com (Postfix, from userid 106) id 8980AAA6; Fri, 18 Jul 2014 14:30:14 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on mail.free-electrons.com X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED,SHORTCIRCUIT, URIBL_BLOCKED shortcircuit=ham autolearn=disabled version=3.3.2 Received: from localhost.localdomain (col31-4-88-188-83-94.fbx.proxad.net [88.188.83.94]) by mail.free-electrons.com (Postfix) with ESMTPSA id D9E047C6; Fri, 18 Jul 2014 14:30:13 +0200 (CEST) From: =?UTF-8?q?Antoine=20T=C3=A9nart?= To: sebastian.hesselbarth@gmail.com, tj@kernel.org, kishon@ti.com Cc: =?UTF-8?q?Antoine=20T=C3=A9nart?= , alexandre.belloni@free-electrons.com, thomas.petazzoni@free-electrons.com, zmxu@marvell.com, jszhang@marvell.com, linux-arm-kernel@lists.infradead.org, linux-ide@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v10 6/8] Documentation: bindings: document the sub-nodes AHCI bindings Date: Fri, 18 Jul 2014 14:30:05 +0200 Message-Id: <1405686607-8126-7-git-send-email-antoine.tenart@free-electrons.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1405686607-8126-1-git-send-email-antoine.tenart@free-electrons.com> References: <1405686607-8126-1-git-send-email-antoine.tenart@free-electrons.com> MIME-Version: 1.0 Sender: linux-ide-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ide@vger.kernel.org The libahci now allows to use multiple PHYs and to represent each port as a sub-node. Add these bindings to the documentation. Signed-off-by: Antoine Ténart --- .../devicetree/bindings/ata/ahci-platform.txt | 37 ++++++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git a/Documentation/devicetree/bindings/ata/ahci-platform.txt b/Documentation/devicetree/bindings/ata/ahci-platform.txt index c96d8dcf98fd..24d95fccfb4a 100644 --- a/Documentation/devicetree/bindings/ata/ahci-platform.txt +++ b/Documentation/devicetree/bindings/ata/ahci-platform.txt @@ -3,6 +3,10 @@ SATA nodes are defined to describe on-chip Serial ATA controllers. Each SATA controller should have its own node. +It is possible, but not required, to represent each port as a sub-node. +It allows to enable each port independently when dealing with multiple +PHYs. + Required properties: - compatible : compatible string, one of: - "allwinner,sun4i-a10-ahci" @@ -14,6 +18,7 @@ Required properties: - "snps,dwc-ahci" - "snps,exynos5440-ahci" - "snps,spear-ahci" + - "generic-ahci" - interrupts : - reg : @@ -21,11 +26,23 @@ Optional properties: - dma-coherent : Present if dma operations are coherent - clocks : a list of phandle + clock specifier pairs - target-supply : regulator for SATA target power +- phys : reference to the SATA PHY node +- phy-names : must be "sata-phy" "fsl,imx53-ahci", "fsl,imx6q-ahci" required properties: - clocks : must contain the sata, sata_ref and ahb clocks - clock-names : must contain "ahb" for the ahb clock +Required properties when using sub-nodes: +- #address-cells : number of cells to encode an address +- #size-cells : number of cells representing the size of an address + + +Sub-nodes required properties: +- reg : the port number +- phys : reference to the SATA PHY node + + Examples: sata@ffe08000 { compatible = "snps,spear-ahci"; @@ -40,3 +57,23 @@ Examples: clocks = <&pll6 0>, <&ahb_gates 25>; target-supply = <®_ahci_5v>; }; + +With sub-nodes: + sata@f7e90000 { + compatible = "generic-ahci"; + reg = <0xe90000 0x1000>; + interrupts = ; + clocks = <&chip CLKID_SATA>; + #address-cells = <1>; + #size-cells = <0>; + + sata0: sata-port@0 { + reg = <0>; + phys = <&sata_phy 0>; + }; + + sata1: sata-port@1 { + reg = <1>; + phys = <&sata_phy 1>; + }; + };