From patchwork Thu Oct 28 17:23:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Florian Fainelli X-Patchwork-Id: 12590633 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 91394C43217 for ; Thu, 28 Oct 2021 17:23:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 734EE61154 for ; Thu, 28 Oct 2021 17:23:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230509AbhJ1RZ6 (ORCPT ); Thu, 28 Oct 2021 13:25:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43844 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230401AbhJ1RZ4 (ORCPT ); Thu, 28 Oct 2021 13:25:56 -0400 Received: from mail-pl1-x632.google.com (mail-pl1-x632.google.com [IPv6:2607:f8b0:4864:20::632]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C4E27C061570; Thu, 28 Oct 2021 10:23:29 -0700 (PDT) Received: by mail-pl1-x632.google.com with SMTP id r5so4941185pls.1; Thu, 28 Oct 2021 10:23:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=2RKkDNLdJnq4A2BSmMNFHi7ZNvXEVLrWpln1RnpbQ84=; b=mIjYJzIRfft82DhqEGECkDX9LHm4NnbWhsG1fGHgoS0f7ms33Z87vnyKI5uM0AI5Zp 82p+ftxZu9RkcE/+mqqvxXJcjEwsPEs8geF/mHglBfgnNma6yIj95VW2iPMo7bi8H4Gl aK3NCLTprmeLGZDkom9Dv+6iUJ4mrkKxgi+uROdbCjHDjxDRqsSemsxn6vgnsEN6ZHAy 2g0n3QAYsFsJvWHGFUFoI0SB+LALYhf2islf7tNaBqF1/Lk2/MN+kM9ZdOqWdRf0luyX pToJfIJAsuCNZcm+lgoReySHpHk+0S6GUhhblvquVpX6lIhwB0LcUa7GGi0mxWaJ91uU 4WSw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=2RKkDNLdJnq4A2BSmMNFHi7ZNvXEVLrWpln1RnpbQ84=; b=kxUjM66ZSSukkHpaOxpl2ukbDZQFNrTieFB4TUTX0ArYazctAoJg8a/esQ9lhO+0av U2O/4nnFlGh8DFEx/yMSJai2JcF2UcuzjCgpU3tjWkJSBIgRdOWPlhdEjToJUByw6yyU bZpxHw4f7dqYetvoClY0TqGRUUIvlGMqR58lho6v/ETAkeUkz30YNUFWHbl+atki0HZh Fo4+SXV/18fOtAhQkm2qylH0KOx1hhQFHr9x/aSVt9Op7M8r5h9efMpigyp4eNJXHOvx 4XsEx9xB6/Wl3vAPQ5OTA5pea145YGTRxRG7lvpXl8JHXtUyF7JygNSxUgck0Nkwa+US itMA== X-Gm-Message-State: AOAM531uqRlPkiqVdSpmKleJAU2uWlfh5Vlirr3QHctzR9VZlvnKPIZB q69e30uSOLWhITgAwjAO6vH5npNTIrw= X-Google-Smtp-Source: ABdhPJwHjhoDxNVqfzSn3yRcRis3LwJ3IG+q6WQL9QaTHeha9ltR+mN/A6imgl6Cv9Zj67of4VoXjg== X-Received: by 2002:a17:903:24c:b0:13f:2377:ef3a with SMTP id j12-20020a170903024c00b0013f2377ef3amr5157648plh.59.1635441809012; Thu, 28 Oct 2021 10:23:29 -0700 (PDT) Received: from fainelli-desktop.igp.broadcom.net ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id l20sm3222499pgo.67.2021.10.28.10.23.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Oct 2021 10:23:28 -0700 (PDT) From: Florian Fainelli To: linux-kernel@vger.kernel.org Cc: rafal@milecki.pl, Florian Fainelli , Wim Van Sebroeck , Guenter Roeck , Rob Herring , Thomas Bogendoerfer , bcm-kernel-feedback-list@broadcom.com (maintainer:BROADCOM BCM63XX ARM ARCHITECTURE), Justin Chen , linux-watchdog@vger.kernel.org (open list:WATCHDOG DEVICE DRIVERS), devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS), linux-mips@vger.kernel.org (open list:MIPS), linux-arm-kernel@lists.infradead.org (moderated list:BROADCOM BCM63XX ARM ARCHITECTURE) Subject: [PATCH 3/7] watchdog: bcm7038_wdt: Support platform data configuration Date: Thu, 28 Oct 2021 10:23:18 -0700 Message-Id: <20211028172322.4021440-4-f.fainelli@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211028172322.4021440-1-f.fainelli@gmail.com> References: <20211028172322.4021440-1-f.fainelli@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org The BCM7038 watchdog driver needs to be able to obtain a specific clock name on BCM63xx platforms which is the "periph" clock ticking at 50MHz. make it possible to specify the clock name to obtain via platform data. Signed-off-by: Florian Fainelli Reviewed-by: Guenter Roeck --- drivers/watchdog/bcm7038_wdt.c | 8 +++++++- include/linux/platform_data/bcm7038_wdt.h | 8 ++++++++ 2 files changed, 15 insertions(+), 1 deletion(-) create mode 100644 include/linux/platform_data/bcm7038_wdt.h diff --git a/drivers/watchdog/bcm7038_wdt.c b/drivers/watchdog/bcm7038_wdt.c index acaaa0005d5b..506cd7ef9c77 100644 --- a/drivers/watchdog/bcm7038_wdt.c +++ b/drivers/watchdog/bcm7038_wdt.c @@ -10,6 +10,7 @@ #include #include #include +#include #include #include @@ -133,8 +134,10 @@ static void bcm7038_clk_disable_unprepare(void *data) static int bcm7038_wdt_probe(struct platform_device *pdev) { + struct bcm7038_wdt_platform_data *pdata = pdev->dev.platform_data; struct device *dev = &pdev->dev; struct bcm7038_watchdog *wdt; + const char *clk_name = NULL; int err; wdt = devm_kzalloc(dev, sizeof(*wdt), GFP_KERNEL); @@ -147,7 +150,10 @@ static int bcm7038_wdt_probe(struct platform_device *pdev) if (IS_ERR(wdt->base)) return PTR_ERR(wdt->base); - wdt->clk = devm_clk_get(dev, NULL); + if (pdata && pdata->clk_name) + clk_name = pdata->clk_name; + + wdt->clk = devm_clk_get(dev, clk_name); /* If unable to get clock, use default frequency */ if (!IS_ERR(wdt->clk)) { err = clk_prepare_enable(wdt->clk); diff --git a/include/linux/platform_data/bcm7038_wdt.h b/include/linux/platform_data/bcm7038_wdt.h new file mode 100644 index 000000000000..e18cfd9ec8f9 --- /dev/null +++ b/include/linux/platform_data/bcm7038_wdt.h @@ -0,0 +1,8 @@ +#ifndef __BCM7038_WDT_PDATA_H +#define __BCM7038_WDT_PDATA_H + +struct bcm7038_wdt_platform_data { + const char *clk_name; +}; + +#endif /* __BCM7038_WDT_PDATA_H */