From patchwork Fri Nov 5 15:42:04 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Florian Fainelli X-Patchwork-Id: 517858 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 0842EC433FE for ; Fri, 5 Nov 2021 15:42:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E512561052 for ; Fri, 5 Nov 2021 15:42:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233504AbhKEPpC (ORCPT ); Fri, 5 Nov 2021 11:45:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43858 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233252AbhKEPo5 (ORCPT ); Fri, 5 Nov 2021 11:44:57 -0400 Received: from mail-pf1-x432.google.com (mail-pf1-x432.google.com [IPv6:2607:f8b0:4864:20::432]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4ED4BC061205; Fri, 5 Nov 2021 08:42:18 -0700 (PDT) Received: by mail-pf1-x432.google.com with SMTP id x131so4020056pfc.12; Fri, 05 Nov 2021 08:42:18 -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=KS/QFIB9iRAFf7dtvYUgDKvUDEV07sqKABKwHV353E8=; b=JoVkkcDwILwUiocAfNN7cj2sO19IjA2XBxqfzYB87vvIvITa39tkTepB/7nZAEVxGq liMEvAaTYX8Mj+SZqda9YfhioUih5VcEQkuEOfs3ECUR+ZfdIFoNtQWQVnEOGUgTF79K 2kY5kUrYvK6bDlIVQEdWAlBMh2VC0g38R0zqBGSi4SdcDTom9W9DAYEjQPU8r4mIPZtQ J3GY9zpi1RSg8KluP6FGF/ww50iuORMMH5l1NPyLOKeCuLnaHHOfVrklt9zVnrjFzmBc wzKOFq0zR/vCofN4Oxoa/SHRFUbkW34jivQrNomPjZuQdhNHQpNfh0/mWcMzCaIuYJ9P 5qhg== 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=KS/QFIB9iRAFf7dtvYUgDKvUDEV07sqKABKwHV353E8=; b=7cnb55Sy51tSHk7OfbxYapBR9gLGDd4cADQFSMOD8Mlp5bjXDthNnewzIKe/RZoZPd 90N33BWkyomzNLDGYCCkUyqW357BCft52PlF/ZmoVAL/n9FT2SPuLPjr2v5gQVkQQv4/ DE3yLrdk2OHMilKkB54Z8pmKz2pEPUYaAH8Ynfwr8xrZqhxlmMwyEemiPDxHkOXp+c9c r2YeObFAyFliL7BtnsjboY1xef63+ZSyj2cRhJ8IsuxQbag4TCi1fvoGZiH0K6KZKmnS qwDk72UOyEJ2ceTQzWhr0qfPmPD53KSK9CjHo7VpzYrPx8tv4KUdQ772zzvexjFbnRTP omTg== X-Gm-Message-State: AOAM5316qOJoCQ6+t2Th9WUiyDjFMuiqYvyd/7d7wMQ18eL8f2dF4Ndb xX1jn8eDOQiSlWErvA11bfhqDl6yOh0= X-Google-Smtp-Source: ABdhPJwrEy/mXd3F+6ZsSqC0bKKGMmeEjHrZI+54vC9BIZ8bVwKr38+xbqen8ZrgaWENlv4RLwt/RQ== X-Received: by 2002:a63:86c1:: with SMTP id x184mr35817576pgd.114.1636126937333; Fri, 05 Nov 2021 08:42:17 -0700 (PDT) Received: from fainelli-desktop.igp.broadcom.net ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id b8sm7547097pfi.103.2021.11.05.08.42.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 Nov 2021 08:42:16 -0700 (PDT) From: Florian Fainelli To: linux-kernel@vger.kernel.org Cc: Florian Fainelli , Guenter Roeck , Wim Van Sebroeck , 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 v4 3/7] watchdog: bcm7038_wdt: Support platform data configuration Date: Fri, 5 Nov 2021 08:42:04 -0700 Message-Id: <20211105154208.614260-4-f.fainelli@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211105154208.614260-1-f.fainelli@gmail.com> References: <20211105154208.614260-1-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. Reviewed-by: Guenter Roeck Signed-off-by: Florian Fainelli --- 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 */