From patchwork Tue Dec 13 13:32:59 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 634390 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E1B48C4167B for ; Tue, 13 Dec 2022 13:33:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235645AbiLMNde (ORCPT ); Tue, 13 Dec 2022 08:33:34 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46894 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235241AbiLMNdW (ORCPT ); Tue, 13 Dec 2022 08:33:22 -0500 Received: from relay2-d.mail.gandi.net (relay2-d.mail.gandi.net [IPv6:2001:4b98:dc4:8::222]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EA4F6193EF; Tue, 13 Dec 2022 05:33:19 -0800 (PST) Received: (Authenticated sender: herve.codina@bootlin.com) by mail.gandi.net (Postfix) with ESMTPA id 3B7CB4000D; Tue, 13 Dec 2022 13:33:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1670938398; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Kfby1OwZl0OHnCM18YaCKMdt/L5z3K6H9OIAZWHFNTI=; b=idiGN2Jdl53oA8HQx1F1ah9iJKvUUMaxsJ2p6PFmp2zkKNFM0bNuC9UyiM7IBEEWm36tZV 8R9OgwC1PZp9CDl1kHXkFGj1xQY4059tP/OFDxFKxQKXPVv9jMppaIPleRX5L/4lEYpouL FcXEHGtCIW8wGDCtEF1zt64cCCjh0d2drWP0jxwXhMLNT1kmJ6EbxBwYovez/eDz78U2Nx J5P4EFR5HDcDXe5eD9UkOiYw5+EIoyXk2CEabqO7mH06v43EEJIJRJURH9t7EATb0qhS8h uoQ8B9XGFQg21Z7YehJXf6HFTYJvdkr0EkDaEHEnI7s2ExOnRrgSZoRuVnc3qA== From: Herve Codina To: Geert Uytterhoeven , Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Herve Codina , Greg Kroah-Hartman , Magnus Damm , Gareth Williams Cc: linux-renesas-soc@vger.kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, Thomas Petazzoni , Miquel Raynal Subject: [PATCH v4 2/5] soc: renesas: r9a06g032-sysctrl: Handle h2mode setting based on USBF presence Date: Tue, 13 Dec 2022 14:32:59 +0100 Message-Id: <20221213133302.218955-3-herve.codina@bootlin.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221213133302.218955-1-herve.codina@bootlin.com> References: <20221213133302.218955-1-herve.codina@bootlin.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org The CFG_USB[H2MODE] allows to switch the USB configuration. The configuration supported are: - One host and one device or - Two hosts Set CFG_USB[H2MODE] based on the USBF controller (USB device) availability. Signed-off-by: Herve Codina Reviewed-by: Geert Uytterhoeven --- drivers/clk/renesas/r9a06g032-clocks.c | 28 ++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/drivers/clk/renesas/r9a06g032-clocks.c b/drivers/clk/renesas/r9a06g032-clocks.c index 1488c9d6e639..8a09ba79b97f 100644 --- a/drivers/clk/renesas/r9a06g032-clocks.c +++ b/drivers/clk/renesas/r9a06g032-clocks.c @@ -25,6 +25,8 @@ #include #include +#define R9A06G032_SYSCTRL_USB 0x00 +#define R9A06G032_SYSCTRL_USB_H2MODE (1<<1) #define R9A06G032_SYSCTRL_DMAMUX 0xA0 struct r9a06g032_gate { @@ -919,6 +921,29 @@ static void r9a06g032_clocks_del_clk_provider(void *data) of_clk_del_provider(data); } +static void __init r9a06g032_init_h2mode(struct r9a06g032_priv *clocks) +{ + struct device_node *usbf_np = NULL; + u32 usb; + + while ((usbf_np = of_find_compatible_node(usbf_np, NULL, + "renesas,rzn1-usbf"))) { + if (of_device_is_available(usbf_np)) + break; + } + + usb = readl(clocks->reg + R9A06G032_SYSCTRL_USB); + if (usbf_np) { + /* 1 host and 1 device mode */ + usb &= ~R9A06G032_SYSCTRL_USB_H2MODE; + of_node_put(usbf_np); + } else { + /* 2 hosts mode */ + usb |= R9A06G032_SYSCTRL_USB_H2MODE; + } + writel(usb, clocks->reg + R9A06G032_SYSCTRL_USB); +} + static int __init r9a06g032_clocks_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -948,6 +973,9 @@ static int __init r9a06g032_clocks_probe(struct platform_device *pdev) clocks->reg = of_iomap(np, 0); if (WARN_ON(!clocks->reg)) return -ENOMEM; + + r9a06g032_init_h2mode(clocks); + for (i = 0; i < ARRAY_SIZE(r9a06g032_clocks); ++i) { const struct r9a06g032_clkdesc *d = &r9a06g032_clocks[i]; const char *parent_name = d->source ?