From patchwork Thu Jun 27 15:00:25 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Piotr Wojtaszczyk X-Patchwork-Id: 13714595 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 14B53C2BD09 for ; Thu, 27 Jun 2024 15:04:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To: Cc:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=HK3YnwUakD5I0BhgcE6EqxKNTh3E2b909JJ6LJOQWzo=; b=LUeRmCjFv3VnVjRSeHdZlc45yx PI2bwplTHtrGaxxdx1ZK+O7KLY7eyLcotZSU1d130Y3cDdACeGWZK54yA8lpTuqU+0t+VpwiPnJoF tNMNAWvmZ3VN/d9I0TPoj+OS9fk33D2G88jJtQ50UhFHiCKkd3riIoHcWk6eNZFqb0OHJc85Dpn1s 4vP3SJPcFLK/+6gsY+2FJwXbgdV8RtJBqyjJGOGF2GOAB4n3oyHl9NFFq+kWvWIIUb2mptYnF1HCX HtKAC0KTnWqNao797C1D9itQcf/E1itRXHottPVuJaNcKzv8vtMOyGKMUsJb8REVUIwo1jDljeQ8v kvxUhmfw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sMqfJ-0000000AmCS-3I0G; Thu, 27 Jun 2024 15:04:01 +0000 Received: from mail-ej1-x62f.google.com ([2a00:1450:4864:20::62f]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sMqf2-0000000Am1j-2oDd for linux-arm-kernel@lists.infradead.org; Thu, 27 Jun 2024 15:03:46 +0000 Received: by mail-ej1-x62f.google.com with SMTP id a640c23a62f3a-a725a918edaso453384366b.3 for ; Thu, 27 Jun 2024 08:03:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=timesys-com.20230601.gappssmtp.com; s=20230601; t=1719500623; x=1720105423; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=HK3YnwUakD5I0BhgcE6EqxKNTh3E2b909JJ6LJOQWzo=; b=G4LpSq9ypxG2DsqrojMTNGuz7Y6EjR1Mo1IGCWwCOEkNcWkEi4lOlJUfiODeRgKByN tYjtbU7CR7RsE6xaQviDlbYLBEbCtudggxN1Q4gM6xlF6oGeT+gVX1Y8mv51BaQeS82V WxMmhl2H2uYgGWqQdcpRQRp85GaSTts0MqWqEZYTvF1O9+JRBQ+AkfQspZrJig4uS8xD vjpAle9kJ5/0+mMYAJ2HDcnJhd00wxMaLMrl0UQNQ0BcsCvM8AsucIppN1ivCLW3GpDH tC48G+/7J5h+wMu9VZmA96jkrB088O+BBWRJpaRRSmwBa8lD5gipbkCrBxMd6HNxk92I /p1g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1719500623; x=1720105423; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=HK3YnwUakD5I0BhgcE6EqxKNTh3E2b909JJ6LJOQWzo=; b=jx6H3Mj88Q/Dccq82imLIcTOPCSn7mZxfpOoINDklNR64JeZdWqBdE/KKdLEyW96j9 hn2t5iYzjHkWWsSuLoiuuJl2VJjbHM9etT1xvuVn0Vzo4w84JiSs8Kkd9IisOja19iVy l8aukqySTJM6vk7hjfcdBFixvfur7XI6nnnk/3gURSWtjHY58GspGn7Z7DKWZ1fTkTSK c1todyS7AJJYJnsn11wlX54dJJl5+GtoP4U2lcl3EGbnnuZGs1X7jJcSedLXmSSugJBV V80tQO7EBFamFH6G2Jk786thHHyGP1wCf3mYYZEau7TvrcMwFua4En2fQbyU/Uyx+eXW RQHA== X-Forwarded-Encrypted: i=1; AJvYcCX88xeL95ic1AKbXmksf8ALTwPJZBnkdKAqj2Psf1U54W+1JJfDffo4CG8E6D2UaGqBXtF6GKJHL1byTkZtEPtE1h/BDaypzlSJ1vMGFW7qn4teGak= X-Gm-Message-State: AOJu0YxI6QNBWwqGUiUDpvFbqIKfrtmmzWA5Kbgr+8x2fsU+aIQynNlm 0MqdWxYf3KOFqML0w0pNlRsLKYJXhKqoF/7RVnBX3V6eHCR5iEhDW1QdahUIjG4= X-Google-Smtp-Source: AGHT+IEAPzD6OW6I5gXrK5R5rKDBnBfIPb8ujVS2DyQUrkTnzInDvDleYelSt4/XGlIg6GkZNz/Tdg== X-Received: by 2002:a17:907:d386:b0:a72:8d4f:6720 with SMTP id a640c23a62f3a-a728d4f6df3mr385836766b.69.1719500620657; Thu, 27 Jun 2024 08:03:40 -0700 (PDT) Received: from localhost.localdomain ([91.216.213.152]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a729d7ca289sm67189066b.222.2024.06.27.08.03.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Jun 2024 08:03:40 -0700 (PDT) From: Piotr Wojtaszczyk To: Vinod Koul , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "J.M.B. Downing" , Piotr Wojtaszczyk , Vladimir Zapolskiy , Liam Girdwood , Mark Brown , Russell King , Michael Turquette , Stephen Boyd , Andi Shyti , Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Jaroslav Kysela , Takashi Iwai , Arnd Bergmann , Yangtao Li , Li Zetao , Chancel Liu , Michael Ellerman , Corentin Labbe , dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, alsa-devel@alsa-project.org, linuxppc-dev@lists.ozlabs.org, linux-sound@vger.kernel.org, linux-clk@vger.kernel.org, linux-i2c@vger.kernel.org, linux-mtd@lists.infradead.org Subject: [Patch v5 07/12] clk: lpc32xx: initialize regmap using parent syscon Date: Thu, 27 Jun 2024 17:00:25 +0200 Message-Id: <20240627150046.258795-8-piotr.wojtaszczyk@timesys.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240627150046.258795-1-piotr.wojtaszczyk@timesys.com> References: <20240627150046.258795-1-piotr.wojtaszczyk@timesys.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240627_080344_778398_0D718B64 X-CRM114-Status: GOOD ( 16.91 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This allows to share the regmap with other simple-mfd devices like nxp,lpc32xx-dmamux Signed-off-by: Piotr Wojtaszczyk --- Changes for v5: - Add fallback regmap for previous simple-bus DT entry Changes for v4: - This patch is new in v4 drivers/clk/Kconfig | 1 + drivers/clk/nxp/clk-lpc32xx.c | 26 +++++++++++++++----------- 2 files changed, 16 insertions(+), 11 deletions(-) diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig index 3e9099504fad..85ef57d5cccf 100644 --- a/drivers/clk/Kconfig +++ b/drivers/clk/Kconfig @@ -346,6 +346,7 @@ config COMMON_CLK_LOONGSON2 config COMMON_CLK_NXP def_bool COMMON_CLK && (ARCH_LPC18XX || ARCH_LPC32XX) select REGMAP_MMIO if ARCH_LPC32XX + select MFD_SYSCON if ARCH_LPC32XX select MFD_SYSCON if ARCH_LPC18XX help Support for clock providers on NXP platforms. diff --git a/drivers/clk/nxp/clk-lpc32xx.c b/drivers/clk/nxp/clk-lpc32xx.c index d0f870eff0d6..b8de7f66d1b5 100644 --- a/drivers/clk/nxp/clk-lpc32xx.c +++ b/drivers/clk/nxp/clk-lpc32xx.c @@ -7,6 +7,7 @@ #include #include #include +#include #include #include @@ -1511,18 +1512,21 @@ static void __init lpc32xx_clk_init(struct device_node *np) return; } - base = of_iomap(np, 0); - if (!base) { - pr_err("failed to map system control block registers\n"); - return; - } - - clk_regmap = regmap_init_mmio(NULL, base, &lpc32xx_scb_regmap_config); + clk_regmap = syscon_node_to_regmap(np->parent); if (IS_ERR(clk_regmap)) { - pr_err("failed to regmap system control block: %ld\n", - PTR_ERR(clk_regmap)); - iounmap(base); - return; + /* fallback to mmio if syscon fails */ + base = of_iomap(np, 0); + if (!base) { + pr_err("failed to map system control block registers\n"); + return; + } + clk_regmap = regmap_init_mmio(NULL, base, &lpc32xx_scb_regmap_config); + if (IS_ERR(clk_regmap)) { + pr_err("failed to regmap system control block: %ld\n", + PTR_ERR(clk_regmap)); + iounmap(base); + return; + } } /*