From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f54.google.com (mail-wm1-f54.google.com [209.85.128.54]) (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 3265A36DA0D for ; Tue, 19 May 2026 22:33:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.54 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779229993; cv=none; b=VKm9t8qfnRkhFMjnlJX4RzNjeYKDNK1yOhlNn35iaohlaWhZ4YvOWoNY0o42EVJUl1RQ+4JEWVBQA7T0gnMFGbduXGjMOiiyFxP6JM6Hy5FureboZoOrUQj/gcIpYVtnJ6enHwrxaH9v430X/4AOUEDtRonC1vx+vxRBrjxlXcU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779229993; c=relaxed/simple; bh=pT5fXYUM/Vg8EfvGNeN1D8rz2V2b+bxX2V18x1wlzJo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=UL8e3PaGDLeKzBQee3MdlRzo7WZS7AnnXVpuAPKmsiDQ8bZULhWQCh6Tyyfsyfa8svEEYPFIo2RUENOerkr8X4cfR58+U3ra6OUGSnfTlGZQALbhuAMaj6VAJKSuUKqsmDgcLSvrAYC4Mm+w0w/0cFgxEd4+nZatZY85STzRW+A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=lzBx9D4B; arc=none smtp.client-ip=209.85.128.54 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="lzBx9D4B" Received: by mail-wm1-f54.google.com with SMTP id 5b1f17b1804b1-488d2079582so40325945e9.2 for ; Tue, 19 May 2026 15:33:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1779229990; x=1779834790; 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=BaMDXwQVRtxROg0BHKiUws/Sbvb5VHpQ+LiARB3jO4c=; b=lzBx9D4B1VPuchGF6gpWopplbAdE76pui76OdaNBec5+8KT2lj1jZunmqZ7PlgEmWn sPWUTjPaqwF6nc0/3/FEpPeb+UN1pldn1SQ/5JKxD9kBpf6PFl+sGp88qorNyMeAZVKY nvMTCJXtlhwa5LEjhzrTNUHBZTcMAo+XYZMUgnrm0wOEzzH9177hiRbzTHyynDhsmwAK BeT3h3slV050bk/3rpGYvywHvtbHWzG4sM9NOLJAJQO9EoCbuBMjvOsHmHJGmaS7L7sY 7s6Ddqx0o3h1TAuXY5ygrCoUcOsOgMQYpzigqOXrjSqJBCBI2IDd2URJqO1JBE01EI+A ltHA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1779229990; x=1779834790; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=BaMDXwQVRtxROg0BHKiUws/Sbvb5VHpQ+LiARB3jO4c=; b=YoZdNEYOQKnZP9AwLgOmMWRSKWVatPI9CakuKL+pTogIOng98uUpBgU+xS/uCXRnyW YIWoIOv07XFuNUGBh0P+nlK5RQviERn33gXbiCVXZ/CniuaAGCXAiLkHhrk7xpGyp0Ne HmKJk861kfTHm0uM+QyvcHA/StADJOdTKJnTaRBmy0RJ4WcQxYywctoH53iQQyfsGzCk dscZmMgFV3mCepnPYY1ddtGV0r2AlRv4KkC7rWvHRLyregUucWXZA3Y2J49UCmn8+32w r1JPF7hD61t9+p4wm6caseaYwaO83uXYZGOPL0OpLpHVI72zufRtTsyvoltWOgfl5WSG z5/A== X-Forwarded-Encrypted: i=1; AFNElJ8whQF9W6pirSCKypGqP+matYg+Z31uZKoHwJ+b9SDlaLpaYjpA9qq9GCL3DgHPDGDx5827J+y1Sn4Q5DM=@vger.kernel.org X-Gm-Message-State: AOJu0YwHQr/E0JVmyJ3FR+Vz5ChT3nFKcWUGMHWBp4+pjOgLijkR4xIk vHwJc1dPoQ6pla90ceCrAvAwl2DEJZhPgoY/zpfwBs9089XbfhsmbfSK X-Gm-Gg: Acq92OHnS5e84YiUXLYNAqWupyxupAduTvHf7dMdcjJyDtOABokrUi5XR+UqVCNJF/O Rrt7KTyT47Gzibzzt0JPge2t723PIIK/Q0lSO8tJWARk0ylkvjh4Ph/RqSoCWLDO5B9DH6L5UUI Xoi1FNjM8p1nQyJOOeqvfuMcmYJT8W6ms62h72gOj8gDZ7oD4crVARDLBZAWHO02bX9fey2wU4K OH0XsEdfz2ZRGSGss4XjOO5H2KgBqyPLO2SPx2lK6FZjfikrm2IVyrXoTHKMApbC1DKQ86h4eoc 0rptNICz9+LS59+PEm+K1pTGYgyEARb4WXLSVhdYOl1YD9yG+e3Sh2pB50rZ5diXALi/IIyWo+5 Vycb2uHRTUrb04JLRYxQ/3OLgsY2zleuI4I5Qop/4Zkb/nNZwYwrXil5sqsp3S0lj6/LQ01uxNz ZjcduF3RxN27g3dfGgW/84coqkPl3A9gpwAwvHIn2jqlCHfZMXO0j5tV3NPPL4GpH5NlYD5lCH2 YjELGNZyQ== X-Received: by 2002:a05:600c:82c3:b0:490:778:4fe4 with SMTP id 5b1f17b1804b1-49007785080mr183034005e9.26.1779229990354; Tue, 19 May 2026 15:33:10 -0700 (PDT) Received: from Ansuel-XPS24 (host-82-55-252-101.retail.telecomitalia.it. [82.55.252.101]) by smtp.googlemail.com with ESMTPSA id 5b1f17b1804b1-48fe4c88495sm346659955e9.4.2026.05.19.15.33.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 May 2026 15:33:09 -0700 (PDT) From: Christian Marangi To: Stefan Roese , Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Cc: Christian Marangi Subject: [PATCH v3 2/5] i2c: mt7621: clear pending interrupt on i2c reset Date: Wed, 20 May 2026 00:32:44 +0200 Message-ID: <20260519223253.1093-3-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260519223253.1093-1-ansuelsmth@gmail.com> References: <20260519223253.1093-1-ansuelsmth@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On resetting the i2c bus, clear any pending interrupt to have a more consistent state on the next operation. Signed-off-by: Christian Marangi --- drivers/i2c/busses/i2c-mt7621.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/i2c/busses/i2c-mt7621.c b/drivers/i2c/busses/i2c-mt7621.c index 700beb9e7b1a..d8fa29e7e0fa 100644 --- a/drivers/i2c/busses/i2c-mt7621.c +++ b/drivers/i2c/busses/i2c-mt7621.c @@ -101,6 +101,8 @@ static void mtk_i2c_reset(struct mtk_i2c *i2c) iowrite32(((i2c->clk_div << 16) & SM0CTL0_CLK_DIV_MASK) | SM0CTL0_EN | SM0CTL0_SCL_STRETCH, i2c->base + REG_SM0CTL0_REG); iowrite32(0, i2c->base + REG_SM0CFG2_REG); + /* Clear any pending interrupt */ + iowrite32(1, i2c->base + REG_PINTEN_REG); } static void mtk_i2c_dump_reg(struct mtk_i2c *i2c) -- 2.53.0