From patchwork Wed Apr 11 14:16:40 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Icenowy Zheng X-Patchwork-Id: 10335593 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 153FB602D8 for ; Wed, 11 Apr 2018 14:23:00 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id F2BEA26CFC for ; Wed, 11 Apr 2018 14:22:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E73EC27B13; Wed, 11 Apr 2018 14:22:59 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 7CCC826CFC for ; Wed, 11 Apr 2018 14:22:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=LyTUEsxYOQpHq0Qp5rGDetYWl57af820ln1vbDf5ygE=; b=NEmEfNFOWG4HfQBtkF3lKYmzfH b6MrUPtwR1y02kedrck3yYllcmzPZteQnHxhAFWnrrmjFqy5N+EFPORVDwfG9totIHWFZthHdxXD9 GSaNr53/HIkSFddXgqpKBzktSrXFV4isdFUcLDgWpPeXVp6ATm2Yk33yTrI0tRv1mSd+9wS17O10r aSnGsXieoZ8/17uUaLff/QFQR37yI2um4OSW1ajZKkZvt/cimi8xb9BcL/1kZa7i6N5sCQ2uDyVkJ oNpBQHchPD7qEwxbuqydaiI3WWMt8vLXLluN3o0FmC4mtso/w/w3iYvS4GtPakYw9NVNs2II8tyTt 9u3F43RQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1f6Ge8-0007iI-Sx; Wed, 11 Apr 2018 14:22:48 +0000 Received: from glass.birch.relay.mailchannels.net ([23.83.209.70]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1f6Gd9-00075l-HC for linux-arm-kernel@lists.infradead.org; Wed, 11 Apr 2018 14:22:00 +0000 X-Sender-Id: lmn-tzduiowcrqmw|x-authsender|icenowy@aosc.io Received: from relay.mailchannels.net (localhost [127.0.0.1]) by relay.mailchannels.net (Postfix) with ESMTP id BE34C415AF; Wed, 11 Apr 2018 14:21:32 +0000 (UTC) Received: from hermes.aosc.io (unknown [100.96.25.18]) (Authenticated sender: lmn-TZDUIOWCRQMW) by relay.mailchannels.net (Postfix) with ESMTPA id D558641367; Wed, 11 Apr 2018 14:21:31 +0000 (UTC) X-Sender-Id: lmn-tzduiowcrqmw|x-authsender|icenowy@aosc.io Received: from hermes.aosc.io (hermes.aosc.io [172.19.51.240]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384) by 0.0.0.0:2500 (trex/5.14.1); Wed, 11 Apr 2018 14:21:32 +0000 X-MC-Relay: Neutral X-MailChannels-SenderId: lmn-tzduiowcrqmw|x-authsender|icenowy@aosc.io X-MailChannels-Auth-Id: lmn-TZDUIOWCRQMW X-Shade-Company: 17042cad15b7d959_1523456492588_1678544310 X-MC-Loop-Signature: 1523456492587:2105220596 X-MC-Ingress-Time: 1523456492587 Received: from localhost (localhost [127.0.0.1]) (Authenticated sender: icenowy@aosc.io) by hermes.aosc.io (Postfix) with ESMTPSA id 6CA1A5A743; Wed, 11 Apr 2018 14:21:26 +0000 (UTC) From: Icenowy Zheng To: Rob Herring , Maxime Ripard , Chen-Yu Tsai , Giuseppe Cavallaro , Corentin Labbe Subject: [PATCH 4/5] drivers: soc: sunxi: export a regmap for EMAC clock reg on A64 Date: Wed, 11 Apr 2018 22:16:40 +0800 Message-Id: <20180411141641.14675-5-icenowy@aosc.io> In-Reply-To: <20180411141641.14675-1-icenowy@aosc.io> References: <20180411141641.14675-1-icenowy@aosc.io> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180411_072147_712574_02F17D91 X-CRM114-Status: GOOD ( 17.87 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com, linux-arm-kernel@lists.infradead.org, Icenowy Zheng MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP The A64 SRAM controller memory zone has a EMAC clock register, which is needed by the Ethernet MAC driver (dwmac-sun8i). Export a regmap for this register on A64. Signed-off-by: Icenowy Zheng --- drivers/soc/sunxi/sunxi_sram.c | 48 ++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 46 insertions(+), 2 deletions(-) diff --git a/drivers/soc/sunxi/sunxi_sram.c b/drivers/soc/sunxi/sunxi_sram.c index 882be5ed7e84..35ab5f334bb1 100644 --- a/drivers/soc/sunxi/sunxi_sram.c +++ b/drivers/soc/sunxi/sunxi_sram.c @@ -17,6 +17,7 @@ #include #include #include +#include #include @@ -281,13 +282,41 @@ int sunxi_sram_release(struct device *dev) } EXPORT_SYMBOL(sunxi_sram_release); +struct sunxi_sramc_variant { + bool has_emac_clock; +}; + +static const struct sunxi_sramc_variant sun4i_a10_sramc_variant = { + /* Nothing special */ +}; + +static const struct sunxi_sramc_variant sun50i_a64_sramc_variant = { + .has_emac_clock = true, +}; + +static struct regmap_config sunxi_sram_emac_clock_regmap = { + .reg_bits = 32, + .val_bits = 32, + .reg_stride = 4, + .max_register = 0x0, /* only single register */ + .name = "emac-clock", +}; + +#define SUNXI_SRAM_EMAC_CLOCK_REG 0x30 + static int sunxi_sram_probe(struct platform_device *pdev) { struct resource *res; struct dentry *d; + struct regmap *emac_clock; + const struct sunxi_sramc_variant *variant; sram_dev = &pdev->dev; + variant = of_device_get_match_data(&pdev->dev); + if (!variant) + return -EINVAL; + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(base)) @@ -300,12 +329,27 @@ static int sunxi_sram_probe(struct platform_device *pdev) if (!d) return -ENOMEM; + if (variant->has_emac_clock) { + emac_clock = devm_regmap_init_mmio(&pdev->dev, + base + SUNXI_SRAM_EMAC_CLOCK_REG, + &sunxi_sram_emac_clock_regmap); + + if (IS_ERR(emac_clock)) + return PTR_ERR(emac_clock); + } + return 0; } static const struct of_device_id sunxi_sram_dt_match[] = { - { .compatible = "allwinner,sun4i-a10-sram-controller" }, - { .compatible = "allwinner,sun50i-a64-sram-controller" }, + { + .compatible = "allwinner,sun4i-a10-sram-controller", + .data = &sun4i_a10_sramc_variant, + }, + { + .compatible = "allwinner,sun50i-a64-sram-controller", + .data = &sun50i_a64_sramc_variant, + }, { }, }; MODULE_DEVICE_TABLE(of, sunxi_sram_dt_match);