From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.7 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_ADSP_ALL, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AE53DC8300A for ; Thu, 30 Apr 2020 11:57:17 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 83D5D207DD for ; Thu, 30 Apr 2020 11:57:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="hqDGxFuM"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=plaes.org header.i=@plaes.org header.b="ptSca4hV" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 83D5D207DD Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=plaes.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version: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=RgQb0qiJYKrz90i/Q4yIWJKHzcOGs4RhG3V9R4OmcWM=; b=hqDGxFuMbdl4wc jC9y8N0b5pDxY6z9x6IHYYBC/0JB/s5n3Av6j8F0K9XEwrP3QQR85hsKMdvLHCGIcBwjlnDXIvgSe UrN4b5ikYvVbxxYzP4exNB68a/R1gTWNx3MDKDGLwxn9h7P6Tx+cKH9ZF6A/Gp9Andj5GTvDm3UO9 4UaxhN8hYf7PV6daQGWxW8ndAVLJ+VYBGX812Kua7VBCHH9eDUUcU/ojgjZBdR2KO21t5TCDcHuLc w+lAIomYLCbE4KwuF9M+iqDDNgjZ/+nVmq50Ys+lT3im4470+xOvUAAZAsq38tOXNO3STvoae6pkX yUNWEuyjddu4JCIXDmPQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jU7oY-0005ao-Kk; Thu, 30 Apr 2020 11:57:14 +0000 Received: from plaes.org ([188.166.43.21]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jU7oV-0005a3-9k for linux-arm-kernel@lists.infradead.org; Thu, 30 Apr 2020 11:57:12 +0000 Received: from localhost (unknown [IPv6:2001:1530:1000:d397:940e:6b9e:3deb:3]) by plaes.org (Postfix) with ESMTPSA id 13D554036D; Thu, 30 Apr 2020 11:57:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=plaes.org; s=mail; t=1588247829; bh=bh7o9ZhtcwUOEzy3WygVte7TJMzYuXaXlcYI721k4f8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ptSca4hVYlVlD+EeQS36HhT/dPaEy5pyiigz/Kfbl3GOJ5Bo8KfOzvXrIQg8VPoDM Fy66ScCGvpCkDjyVF7rM4ZeaugaTacGRw/4GkvtaW1BVIBvsEjU65L3VKl/wPP/VR5 oZFUBNSMdNsFEaFK9deqPJztaNHnS4X5yrYD6J2OprwfG/3GF+oScP+TI0uyLARkDH OUqgKKPngJlu71n6BqlE/UvnR+NKfdlb/nTR2IFBFOTAoIU02LI49ZndUolk5ENMII GAu/vY4jxfDLRiUBPUQC7Is3FUR141vs9/XhICwZ0uulGWwApMclmREtUICFh7PAAF w67FZ6Gbh76jw== From: Priit Laes To: Maxime Ripard , Chen-Yu Tsai , Rob Herring , linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-sunxi@googlegroups.com Subject: [PATCH v3 1/6] clk: sunxi-ng: a20: Register regmap for sun7i CCU Date: Thu, 30 Apr 2020 14:56:57 +0300 Message-Id: <20200430115702.5768-2-plaes@plaes.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200430115702.5768-1-plaes@plaes.org> References: <20200430115702.5768-1-plaes@plaes.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200430_045711_479467_DB6F0CFB X-CRM114-Status: GOOD ( 15.02 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Priit Laes Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On sun7i, the gmac clock is handled by the dwmac-sunxi driver, but its configuration register is located in the CCU register range, requiring proper regmap setup. In order to do that, we use CLK_OF_DECLARE_DRIVER to initialize sun7i ccu, which clears the OF_POPULATED flag, allowing the platform device to probe the same resource with proper device node. Signed-off-by: Priit Laes --- drivers/clk/sunxi-ng/ccu-sun4i-a10.c | 62 +++++++++++++++++++++++++++- 1 file changed, 60 insertions(+), 2 deletions(-) diff --git a/drivers/clk/sunxi-ng/ccu-sun4i-a10.c b/drivers/clk/sunxi-ng/ccu-sun4i-a10.c index f32366d9336e..fa147b8ce705 100644 --- a/drivers/clk/sunxi-ng/ccu-sun4i-a10.c +++ b/drivers/clk/sunxi-ng/ccu-sun4i-a10.c @@ -8,6 +8,8 @@ #include #include #include +#include +#include #include "ccu_common.h" #include "ccu_reset.h" @@ -1478,5 +1480,61 @@ static void __init sun7i_a20_ccu_setup(struct device_node *node) { sun4i_ccu_init(node, &sun7i_a20_ccu_desc); } -CLK_OF_DECLARE(sun7i_a20_ccu, "allwinner,sun7i-a20-ccu", - sun7i_a20_ccu_setup); +CLK_OF_DECLARE_DRIVER(sun7i_a20_ccu, "allwinner,sun7i-a20-ccu", + sun7i_a20_ccu_setup); + +/* + * Regmap for the GMAC driver (dwmac-sunxi) to allow access to + * GMAC configuration register. + */ +#define SUN7I_A20_GMAC_CFG_REG 0x164 +static bool sun7i_a20_ccu_regmap_accessible_reg(struct device *dev, + unsigned int reg) +{ + if (reg == SUN7I_A20_GMAC_CFG_REG) + return true; + return false; +} + +static struct regmap_config sun7i_a20_ccu_regmap_config = { + .reg_bits = 32, + .val_bits = 32, + .reg_stride = 4, + .max_register = 0x1f4, /* clk_out_b */ + + .readable_reg = sun7i_a20_ccu_regmap_accessible_reg, + .writeable_reg = sun7i_a20_ccu_regmap_accessible_reg, +}; + +static int sun7i_a20_ccu_probe_regmap(struct platform_device *pdev) +{ + void __iomem *reg; + struct resource *res; + struct regmap *regmap; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + reg = devm_ioremap(&pdev->dev, res->start, resource_size(res)); + if (IS_ERR(reg)) + return PTR_ERR(reg); + + regmap = devm_regmap_init_mmio(&pdev->dev, reg, + &sun7i_a20_ccu_regmap_config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + return 0; +} + +static const struct of_device_id sun7i_a20_ccu_ids[] = { + { .compatible = "allwinner,sun7i-a20-ccu"}, + { } +}; + +static struct platform_driver sun7i_a20_ccu_driver = { + .probe = sun7i_a20_ccu_probe_regmap, + .driver = { + .name = "sun7i-a20-ccu", + .of_match_table = sun7i_a20_ccu_ids, + }, +}; +builtin_platform_driver(sun7i_a20_ccu_driver); -- 2.26.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel