[U-Boot] [PATCH 1/2] rcar_i2c: Fix receiving wait condition
From: Hisashi Nakamura hisashi.nakamura.ak@renesas.com
Signed-off-by: Hisashi Nakamura hisashi.nakamura.ak@renesas.com Signed-off-by: Nobuhiro Iwamatsu nobuhiro.iwamatsu.yj@renesas.com --- drivers/i2c/rcar_i2c.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/i2c/rcar_i2c.c b/drivers/i2c/rcar_i2c.c index ba2cadb..01c98d4 100644 --- a/drivers/i2c/rcar_i2c.c +++ b/drivers/i2c/rcar_i2c.c @@ -122,8 +122,8 @@ rcar_i2c_raw_read(struct rcar_i2c *dev, u8 chip, uint addr) /* start master receive */ writel(MCR_MDBS | MCR_MIE | MCR_ESG, &dev->icmcr);
- while ((readl(&dev->icmsr) & (MSR_MAT | MSR_MDE)) - != (MSR_MAT | MSR_MDE)) + while ((readl(&dev->icmsr) & (MSR_MAT | MSR_MDR)) + != (MSR_MAT | MSR_MDR)) udelay(10);
/* clear ESG */
Signed-off-by: Hisashi Nakamura hisashi.nakamura.ak@renesas.com Signed-off-by: Nobuhiro Iwamatsu nobuhiro.iwamatsu.yj@renesas.com --- drivers/i2c/rcar_i2c.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/i2c/rcar_i2c.c b/drivers/i2c/rcar_i2c.c index 01c98d4..50cebd6 100644 --- a/drivers/i2c/rcar_i2c.c +++ b/drivers/i2c/rcar_i2c.c @@ -119,6 +119,8 @@ rcar_i2c_raw_read(struct rcar_i2c *dev, u8 chip, uint addr)
/* set slave address, receive */ writel((chip << 1) | 1, &dev->icmar); + /* clear status */ + writel(0, &dev->icmsr); /* start master receive */ writel(MCR_MDBS | MCR_MIE | MCR_ESG, &dev->icmcr);
participants (1)
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Nobuhiro Iwamatsu