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[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> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260519_153312_556980_5C02DFE0 X-CRM114-Status: GOOD ( 12.43 ) 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 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