From nobody Sat Feb 7 15:02:32 2026 Received: from mail-il1-f179.google.com (mail-il1-f179.google.com [209.85.166.179]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7DB4A23817D for ; Mon, 27 Oct 2025 13:30:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.179 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761571822; cv=none; b=n5Kpd4ch+9O8t3RX8AWLucQlGwceUHSejmPlS/mzU1awPCAmxWgDUGjT3koi4wu1jfNg1fKjwBKcb2RoNEIp4F9wKaD2E/iAwqKwLECByXnpVO5VlT81Pw5vq3kKO4M2sn5eiu5DxPlWCtiJyM156wa2JDArUVEgRInUeIpg9qs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761571822; c=relaxed/simple; bh=h91Mh4hoPgByHdcKd6/RneQUViXMJHcN0u0JxmaBjQ0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=DFP6kIRZvYx1y6hbgXIFrOoFu9Bipu30fYZCjWnkygKOHykA2MPoAvSlO8wJ7FEzKFklrRXvNy/S24CvNfKBMCPp7JPKAR7t3UOYHhbMzSCNMglKGnGwdB+zsk9sCWQo/7dUT1vEEHyDaWyQmS1Zc8ckz4/qVCWfMMVTBnmIONU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=riscstar.com; spf=pass smtp.mailfrom=riscstar.com; dkim=pass (2048-bit key) header.d=riscstar-com.20230601.gappssmtp.com header.i=@riscstar-com.20230601.gappssmtp.com header.b=XFwbodya; arc=none smtp.client-ip=209.85.166.179 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=riscstar.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=riscstar.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=riscstar-com.20230601.gappssmtp.com header.i=@riscstar-com.20230601.gappssmtp.com header.b="XFwbodya" Received: by mail-il1-f179.google.com with SMTP id e9e14a558f8ab-430c17e29d9so19345535ab.1 for ; Mon, 27 Oct 2025 06:30:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=riscstar-com.20230601.gappssmtp.com; s=20230601; t=1761571818; x=1762176618; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=OXEnNR948aKFzOMEVavf8q+kCpka+pPq8yUEtfNzTFc=; b=XFwbodya7ASLTFrUJZnH3e1+gvWRhoQYr9B1ytUZYVTRuhQ0fQ8Af/Kgkf4IoxcjTI IDzoVpEMe2y3pL0bpfCA+b+BZMGcDVOGC3n3pzNob865kA95FqDEMfZvLWmNTDUQFNmR BalfJVwRT2Hrx+atarXkRwsQO3Lz/dig9tKQt2mAL0RLQ0MsKo0I5T/mKqgIZiD0kfj7 LTaz1U0Hb/oMjZ+KzcDNBMvUDbPWdpjHybLnemSExi0Bvn2PlYK/ghNmCe27+7gLAiIL LhN9JgyPh89uYKcNMyaxk0VoGIl4H6FJsughZjRHhitwC2Cs16715B7Kh8+AZ6X07kSA CEPQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1761571818; x=1762176618; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=OXEnNR948aKFzOMEVavf8q+kCpka+pPq8yUEtfNzTFc=; b=CjRVb0cNn4aIQgXbn5JzKd0wRjDQHB6TbYThilZjNwOarM+B5tMmWbEOBi24n/vVpg F/vGBZFOkN3GN+XyiBxsRumRLHDD4CBPZTUUvsPPtoYvZgqXntIETwoGmM0NmOar14Lg qIQNeObBmZlIawSmJrPdRslsFmqfYJA4MCTQ0fXSDFZIl9cC5ES5H/p7+0DE4PFLy6+L xay9DtNbzVAQbDn9HY5ovh3rqhUS17Q4A8+RuPYJ0hAJEDB1+PZsEf3LWQz8/8FSEmIL mZcvwt8RC+7yzwIxN8ehbPznj7iZ9vHki+VmZUt2CDo6Cd3Zvo+BqPMSFFnzBEhlyxTX wlhw== X-Forwarded-Encrypted: i=1; AJvYcCVCo4gwFOwO49aZuY+4p2CJWNoFIVgLFDAtsjrumn7pGY+2GPwp9PFWzIR/PcrxsIfEMZoumCxoLKELFQo=@vger.kernel.org X-Gm-Message-State: AOJu0YzNrHucD8JPdgRGL0kBOymbnh8/XpjV8asTutZoT0WHOKvpkv3z 2Mkoqf6It+F1lxuGrqPpMCyCRNhpGjJtuN7m8X7snyySfcUJe3/uVUgbpKr9DBQ5zZU= X-Gm-Gg: ASbGncvZFsallfIr++NQCZIp2Ytxd4XqADhLR1rQ/S1zINFvbxXq+1Xa1ynoqG4z1uJ wB21Ptp8CN9fQHGpFf2qhTchARGrtOptqUkbgY/200+tDm+RsWbEZyNhYgzbsc1bF45oEHGYs5v L+gUfzQXB7qiT+BnzMVBAC+I1hyaHDdByXoruTJI0D46tDm9LogSX3y4RH+x6DRlGeUIELUnLS6 cmSQXN/pkYG1m+g0Bn8c5hHChMJ9XPCCswjyCEYGoy1t3T6TXqM1bbTXX6+5+OSwnobhyU8Smwn Ic0nGDoi55gW9Xj32poix+js+idw9mGy9TdD+Aj5ogJ4S0d3RQwHvi4tCGKjUtjv2Im7uu6WRPw VGBp2GMjGly1ec+202eebP0wCj/1TmOHGzKi1AFwilYTaMcR2kfAF9Fca8ej804mkDfp1wiK3j0 Ahzzog7I0QE0/6Ome7OeVk304EQXpkL5TlXmoxhd8Mt2c= X-Google-Smtp-Source: AGHT+IH0glKysst9aA3Dl1hO2CkWup00aLcqDqNV6Kijix8yVXf6s0ExlLzii7wtaTpwbQLaOSZlgw== X-Received: by 2002:a05:6e02:2689:b0:430:aea6:833f with SMTP id e9e14a558f8ab-4320f6c7f59mr1567415ab.8.1761571818580; Mon, 27 Oct 2025 06:30:18 -0700 (PDT) Received: from zippy.localdomain (c-75-72-117-212.hsd1.mn.comcast.net. [75.72.117.212]) by smtp.gmail.com with ESMTPSA id 8926c6da1cb9f-5aea78e2fd4sm3093057173.26.2025.10.27.06.30.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Oct 2025 06:30:18 -0700 (PDT) From: Alex Elder To: han.xu@nxp.com, broonie@kernel.org, p.zabel@pengutronix.de Cc: dlan@gentoo.org, Frank.li@nxp.com, guodong@riscstar.com, linux-spi@vger.kernel.org, imx@lists.linux.dev, spacemit@lists.linux.dev, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Frank Li Subject: [PATCH v4 3/9] spi: fsl-qspi: add optional reset support Date: Mon, 27 Oct 2025 08:30:01 -0500 Message-ID: <20251027133008.360237-4-elder@riscstar.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20251027133008.360237-1-elder@riscstar.com> References: <20251027133008.360237-1-elder@riscstar.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add support for one or more optional exclusive resets. These simply need to be deasserted at probe time, and can remain that way for the life of the device. Reviewed-by: Frank Li Signed-off-by: Alex Elder --- drivers/spi/spi-fsl-qspi.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/spi/spi-fsl-qspi.c b/drivers/spi/spi-fsl-qspi.c index c887abb028d77..1e27647dd2a09 100644 --- a/drivers/spi/spi-fsl-qspi.c +++ b/drivers/spi/spi-fsl-qspi.c @@ -36,6 +36,7 @@ #include #include #include +#include #include =20 #include @@ -267,6 +268,7 @@ struct fsl_qspi { const struct fsl_qspi_devtype_data *devtype_data; struct mutex lock; struct completion c; + struct reset_control *resets; struct clk *clk, *clk_en; struct pm_qos_request pm_qos_req; struct device *dev; @@ -857,6 +859,8 @@ static void fsl_qspi_cleanup(void *data) { struct fsl_qspi *q =3D data; =20 + reset_control_assert(q->resets); + fsl_qspi_clk_disable_unprep(q); =20 mutex_destroy(&q->lock); @@ -902,6 +906,10 @@ static int fsl_qspi_probe(struct platform_device *pdev) if (!q->ahb_addr) return -ENOMEM; =20 + q->resets =3D devm_reset_control_array_get_optional_exclusive(dev); + if (IS_ERR(q->resets)) + return PTR_ERR(q->resets); + /* find the clocks */ q->clk_en =3D devm_clk_get(dev, "qspi_en"); if (IS_ERR(q->clk_en)) @@ -923,6 +931,10 @@ static int fsl_qspi_probe(struct platform_device *pdev) if (ret) return ret; =20 + ret =3D reset_control_deassert(q->resets); + if (ret) + return ret; + /* find the irq */ ret =3D platform_get_irq(pdev, 0); if (ret < 0) --=20 2.48.1