[PATCH] i2c: rcar_i2c: Add R-Car Gen4 support

[Marek Vasut]

From: Hai Pham <hai.pham.ud at renesas.com>

Add support for R-Car Gen4 SoCs into the driver.

While I2C on R-Car Gen4 does support some extra features (Slave Clock
Stretch Select), for now it is treated the same as I2C on R-Car Gen3,
which let us share the same driver.

Reviewed-by: Marek Vasut <marek.vasut+renesas at mailbox.org>
Signed-off-by: Hai Pham <hai.pham.ud at renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas at mailbox.org> # Use RCAR_64 Kconfig
---
Cc: Heiko Schocher <hs at denx.de>
---
 drivers/i2c/Kconfig    | 2 +-
 drivers/i2c/rcar_i2c.c | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig
index 1d998d14732..c32659b55a9 100644
--- a/drivers/i2c/Kconfig
+++ b/drivers/i2c/Kconfig
@@ -486,7 +486,7 @@ config SYS_I2C_OMAP24XX
 
 config SYS_I2C_RCAR_I2C
 	bool "Renesas RCar I2C driver"
-	depends on (RCAR_GEN2 || RCAR_GEN3) && DM_I2C
+	depends on (RCAR_GEN2 || RCAR_64) && DM_I2C
 	help
 	  Support for Renesas RCar I2C controller.
 
diff --git a/drivers/i2c/rcar_i2c.c b/drivers/i2c/rcar_i2c.c
index d9ece5e3a80..ff9a2d80dda 100644
--- a/drivers/i2c/rcar_i2c.c
+++ b/drivers/i2c/rcar_i2c.c
@@ -369,6 +369,7 @@ static const struct dm_i2c_ops rcar_i2c_ops = {
 static const struct udevice_id rcar_i2c_ids[] = {
 	{ .compatible = "renesas,rcar-gen2-i2c", .data = RCAR_I2C_TYPE_GEN2 },
 	{ .compatible = "renesas,rcar-gen3-i2c", .data = RCAR_I2C_TYPE_GEN3 },
+	{ .compatible = "renesas,rcar-gen4-i2c", .data = RCAR_I2C_TYPE_GEN3 },
 	{ }
 };
 
-- 
2.39.2