From patchwork Wed Feb 5 23:58:56 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergei Shtylyov X-Patchwork-Id: 317291 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 88F2D2C00A4 for ; Thu, 6 Feb 2014 09:58:37 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753258AbaBEW6g (ORCPT ); Wed, 5 Feb 2014 17:58:36 -0500 Received: from mail-la0-f52.google.com ([209.85.215.52]:61931 "EHLO mail-la0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753151AbaBEW6c (ORCPT ); Wed, 5 Feb 2014 17:58:32 -0500 Received: by mail-la0-f52.google.com with SMTP id c6so849804lan.25 for ; Wed, 05 Feb 2014 14:58:30 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:to:subject:cc:from:organization:date :mime-version:content-type:content-transfer-encoding:message-id; bh=PxsGDPU59MApseME7LDmLtNS63FJhqu5YrdAxhk1Mzc=; b=l+TJvky7dY/Z6g96F+yyZXUB6jGy9zp9DwFZFn/2sZCRDNR2qClR1Rrh9wWbYKfwgh 9WpojrrH5LyPR5j1WeY9YZIeprsdFb0Xtph4cb2rJfzNKN+Iv6lz725RYeT8a1yiafYa oLWrsXWYBIXw871I2EGiyTPb6Sfx3/PVYFj+Vfr931S84C6s6aOq99FztMBgcmvNRwSC AC9mrSE127tXRDwOcZTyHXWj48YKmZ9JD0/GtMiBrUdm0Pov7l8kIwx7xF62esL5u06K FZE/bmJT7OA9n5SbbXyjXMApA5He0SVL/ZaMPxdQCUP+iUi2MSkFN4L1SYh9Zh5FMmBd bWfg== X-Gm-Message-State: ALoCoQl/CuR02eR/70BETP1Ge9biCy6rqpW7VvuJ6tVj7j0YVEP54gd8qVeK8hBrlZMq8wkZkZXX X-Received: by 10.152.205.11 with SMTP id lc11mr2790546lac.29.1391641110399; Wed, 05 Feb 2014 14:58:30 -0800 (PST) Received: from wasted.cogentembedded.com (ppp85-140-137-99.pppoe.mtu-net.ru. [85.140.137.99]) by mx.google.com with ESMTPSA id t5sm42824735lat.6.2014.02.05.14.58.29 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Wed, 05 Feb 2014 14:58:29 -0800 (PST) To: robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, grant.likely@linaro.org, devicetree@vger.kernel.org, linux-sh@vger.kernel.org, ijc+devicetree@hellion.org.uk, galak@codeaurora.org Subject: [PATCH v3] sh_eth: add device tree support Cc: nobuhiro.iwamatsu.yj@renesas.com, rob@landley.net, linux-doc@vger.kernel.org From: Sergei Shtylyov Organization: Cogent Embedded Date: Thu, 6 Feb 2014 02:58:56 +0300 MIME-Version: 1.0 Message-Id: <201402060258.57025.sergei.shtylyov@cogentembedded.com> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add support of the device tree probing for the Renesas SH-Mobile SoCs documenting the device tree binding as necessary. This work is loosely based on the original patch by Nobuhiro Iwamatsu . Signed-off-by: Sergei Shtylyov Acked-by: Simon Horman --- This patch is against DaveM's 'net-next.git' repo but should also apply to the recent 'renesas.git' repo's 'devel' branch. It assumes the patch documenting all Ethernet bindings in one file to be applied as well. Not posting it to netdev@vger.kernel.org this time, or Dave will scold me. :-) Changes in version 3: - added probing for R8A7791 and R7S72100; - added irq_of_parse_and_map() call to read PHY IRQ from device tree; - removed '!phy' check before reading the PHY node's "reg" property; - replaced "phy-handle" and "phy-mode" property descriptions with references to the common Ethernet bindings file; - added "clocks" required property; - removed "local-mac-address" optional property; - replaced Armadiallo800EVA board with Lager board in the binding example; - updated driver's copyrights; - refreshed the patch. Changes in version 2: - added sh_eth_match_table[] entry for "renesas,ether-r8a7778", documented it; - clarified descriptions of the "reg" and "interrupt" properties; - moved "interrupt-parent" from required properties to optional; - mentioned the necessary PHY subnode to the "phy-handle" property description, documented the requered "#address-cells" and "#size-cells" properties; - clarified the types/descriptions of the Renesas specific properties; - refreshed the patch. Documentation/devicetree/bindings/net/sh_eth.txt | 55 ++++++++++++++++ drivers/net/ethernet/renesas/sh_eth.c | 75 ++++++++++++++++++++++- 2 files changed, 127 insertions(+), 3 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Index: net-next/Documentation/devicetree/bindings/net/sh_eth.txt =================================================================== --- /dev/null +++ net-next/Documentation/devicetree/bindings/net/sh_eth.txt @@ -0,0 +1,55 @@ +* Renesas Electronics SH EtherMAC + +This file provides information on what the device node for the SH EtherMAC +interface contains. + +Required properties: +- compatible: "renesas,gether-r8a7740" if the device is a part of R8A7740 SoC. + "renesas,ether-r8a7778" if the device is a part of R8A7778 SoC. + "renesas,ether-r8a7779" if the device is a part of R8A7779 SoC. + "renesas,ether-r8a7790" if the device is a part of R8A7790 SoC. + "renesas,ether-r8a7791" if the device is a part of R8A7791 SoC. + "renesas,ether-r7s72100" if the device is a part of R7S72100 SoC. +- reg: offset and length of (1) the E-DMAC/feLic register block (required), + (2) the TSU register block (optional). +- interrupts: interrupt specifier for the sole interrupt. +- phy-mode: see ethernet.txt file in the same directory. +- phy-handle: see ethernet.txt file in the same directory. +- #address-cells: number of address cells for the MDIO bus, must be equal to 1. +- #size-cells: number of size cells on the MDIO bus, must be equal to 0. +- clocks: clock phandle and specifier pair. +- pinctrl-0: phandle, referring to a default pin configuration node. + +Optional properties: +- interrupt-parent: the phandle for the interrupt controller that services + interrupts for this device. +- pinctrl-names: pin configuration state name ("default"). +- renesas,no-ether-link: boolean, specify when a board does not provide a proper + Ether LINK signal. +- renesas,ether-link-active-low: boolean, specify when the Ether LINK signal is + active-low instead of normal active-high. + +Example (Lager board): + + ethernet@ee700000 { + compatible = "renesas,ether-r8a7790"; + reg = <0 0xee700000 0 0x400>; + interrupt-parent = <&gic>; + interrupts = <0 162 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&mstp8_clks R8A7790_CLK_ETHER>; + phy-mode = "rmii"; + phy-handle = <&phy1>; + pinctrl-0 = <ðer_pins>; + pinctrl-names = "default"; + renesas,ether-link-active-low; + #address-cells = <1>; + #size-cells = <0>; + + phy1: ethernet-phy@1 { + reg = <1>; + interrupt-parent = <&irqc0>; + interrupts = <0 IRQ_TYPE_LEVEL_LOW>; + pinctrl-0 = <&phy1_pins>; + pinctrl-names = "default"; + }; + }; Index: net-next/drivers/net/ethernet/renesas/sh_eth.c =================================================================== --- net-next.orig/drivers/net/ethernet/renesas/sh_eth.c +++ net-next/drivers/net/ethernet/renesas/sh_eth.c @@ -1,8 +1,8 @@ /* SuperH Ethernet device driver * * Copyright (C) 2006-2012 Nobuhiro Iwamatsu - * Copyright (C) 2008-2013 Renesas Solutions Corp. - * Copyright (C) 2013 Cogent Embedded, Inc. + * Copyright (C) 2008-2014 Renesas Solutions Corp. + * Copyright (C) 2013-2014 Cogent Embedded, Inc. * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, @@ -27,6 +27,10 @@ #include #include #include +#include +#include +#include +#include #include #include #include @@ -2710,6 +2714,56 @@ static const struct net_device_ops sh_et .ndo_change_mtu = eth_change_mtu, }; +#ifdef CONFIG_OF +static struct sh_eth_plat_data *sh_eth_parse_dt(struct device *dev) +{ + struct device_node *np = dev->of_node; + struct sh_eth_plat_data *pdata; + struct device_node *phy; + const char *mac_addr; + + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return NULL; + + pdata->phy_interface = of_get_phy_mode(np); + + phy = of_parse_phandle(np, "phy-handle", 0); + if (of_property_read_u32(phy, "reg", &pdata->phy)) { + devm_kfree(dev, pdata); + return NULL; + } + pdata->phy_irq = irq_of_parse_and_map(phy, 0); + + mac_addr = of_get_mac_address(np); + if (mac_addr) + memcpy(pdata->mac_addr, mac_addr, ETH_ALEN); + + pdata->no_ether_link = + of_property_read_bool(np, "renesas,no-ether-link"); + pdata->ether_link_active_low = + of_property_read_bool(np, "renesas,ether-link-active-low"); + + return pdata; +} + +static const struct of_device_id sh_eth_match_table[] = { + { .compatible = "renesas,gether-r8a7740", .data = &r8a7740_data }, + { .compatible = "renesas,ether-r8a7778", .data = &r8a777x_data }, + { .compatible = "renesas,ether-r8a7779", .data = &r8a777x_data }, + { .compatible = "renesas,ether-r8a7790", .data = &r8a779x_data }, + { .compatible = "renesas,ether-r8a7791", .data = &r8a779x_data }, + { .compatible = "renesas,ether-r7s72100", .data = &r7s72100_data }, + { } +}; +MODULE_DEVICE_TABLE(of, sh_eth_match_table); +#else +static inline struct sh_eth_plat_data *sh_eth_parse_dt(struct device *dev) +{ + return NULL; +} +#endif + static int sh_eth_drv_probe(struct platform_device *pdev) { int ret, devno = 0; @@ -2763,6 +2817,8 @@ static int sh_eth_drv_probe(struct platf pm_runtime_enable(&pdev->dev); pm_runtime_resume(&pdev->dev); + if (pdev->dev.of_node) + pd = sh_eth_parse_dt(&pdev->dev); if (!pd) { dev_err(&pdev->dev, "no platform data\n"); ret = -EINVAL; @@ -2778,7 +2834,19 @@ static int sh_eth_drv_probe(struct platf mdp->ether_link_active_low = pd->ether_link_active_low; /* set cpu data */ - mdp->cd = (struct sh_eth_cpu_data *)id->driver_data; + if (id) { + mdp->cd = (struct sh_eth_cpu_data *)id->driver_data; + } else { + const struct of_device_id *match; + + match = of_match_device(of_match_ptr(sh_eth_match_table), + &pdev->dev); + if (!match) { + ret = -EINVAL; + goto out_release; + } + mdp->cd = (struct sh_eth_cpu_data *)match->data; + } mdp->reg_offset = sh_eth_get_register_offset(mdp->cd->register_type); sh_eth_set_default_cpu_data(mdp->cd); @@ -2920,6 +2988,7 @@ static struct platform_driver sh_eth_dri .driver = { .name = CARDNAME, .pm = SH_ETH_PM_OPS, + .of_match_table = of_match_ptr(sh_eth_match_table), }, };