[U-Boot] [PATCH v5 1/6] i2c: rcar_i2c: Setup SCL/SDA delay at rcar_i2c_set_speed

Ismael Luceno Cortes ismael.luceno at silicon-gears.com
Thu Mar 7 18:00:49 UTC 2019


Setting up the delay only needs to be done once; move it to
rcar_i2c_set_speed so it's done at initialization time.

Signed-off-by: Ismael Luceno <ismael.luceno at silicon-gears.com>
Reviewed-by: Marek Vasut <marek.vasut+renesas at gmail.com>
Reviewed-by: Heiko Schocher <hs at denx.de>
---

Notes:
    Changes since v2:
    - Improved commit message
    - Style fixes

 drivers/i2c/rcar_i2c.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/i2c/rcar_i2c.c b/drivers/i2c/rcar_i2c.c
index 10b0f8bad4..a57f72a228 100644
--- a/drivers/i2c/rcar_i2c.c
+++ b/drivers/i2c/rcar_i2c.c
@@ -116,9 +116,7 @@ static int rcar_i2c_set_addr(struct udevice *dev, u8 chip, u8 read)
 	writel(0, priv->base + RCAR_I2C_ICMSR);
 	writel(priv->icccr, priv->base + RCAR_I2C_ICCCR);
 
-	if (priv->type == RCAR_I2C_TYPE_GEN3)
-		writel(RCAR_I2C_ICFBSCR_TCYC17, priv->base + RCAR_I2C_ICFBSCR);
-
+	/* Wait for the bus */
 	ret = wait_for_bit_le32(priv->base + RCAR_I2C_ICMCR,
 				RCAR_I2C_ICMCR_FSDA, false, 2, true);
 	if (ret) {
@@ -304,6 +302,11 @@ scgd_find:
 	priv->icccr = (scgd << RCAR_I2C_ICCCR_SCGD_OFF) | cdf;
 	writel(priv->icccr, priv->base + RCAR_I2C_ICCCR);
 
+	if (priv->type == RCAR_I2C_TYPE_GEN3) {
+		/* Set SCL/SDA delay */
+		writel(RCAR_I2C_ICFBSCR_TCYC17, priv->base + RCAR_I2C_ICFBSCR);
+	}
+
 	return 0;
 }
 
-- 
2.19.1


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