[PATCH 2/5] i2c: mt7621: clear pending interrupt on i2c reset
From: Christian Marangi <ansuelsmth@gmail.com>
Date: 2025-07-19 12:56:34
Also in:
linux-arm-kernel, linux-i2c, linux-mediatek, lkml
Subsystem:
i2c subsystem, i2c subsystem host drivers, mediatek mt7621/28/88 i2c driver, the rest · Maintainers:
Andi Shyti, Stefan Roese, Linus Torvalds
On resetting the i2c bus, clear any pending interrupt to have a more consistent state on the next operation. Signed-off-by: Christian Marangi <ansuelsmth@gmail.com> --- 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 c0e13f9af3e5..58c3da92cea3 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)
--
2.50.0