i2c: rcar: add support for r8a7795 (R-Car H3)

Enable the I2C core for this SoC. I add a new type because this version
has new features (e.g. DMA) which will be added somewhen later.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

2 files changed, 4 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/i2c/i2c-rcar.txt b/Documentation/devicetree/bindings/i2c/i2c-rcar.txt
index 16b3e07aa98f..ea406eb20fa5 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-rcar.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-rcar.txt
@@ -10,6 +10,7 @@ Required properties:
         "renesas,i2c-r8a7792"
         "renesas,i2c-r8a7793"
         "renesas,i2c-r8a7794"
+        "renesas,i2c-r8a7795"
 - reg: physical base address of the controller and length of memory mapped
   region.
 - interrupts: interrupt specifier.
diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
index dbedbff48b59..1921294afc87 100644
--- a/drivers/i2c/busses/i2c-rcar.c
+++ b/drivers/i2c/busses/i2c-rcar.c
@@ -100,6 +100,7 @@
 enum rcar_i2c_type {
         I2C_RCAR_GEN1,
         I2C_RCAR_GEN2,
+        I2C_RCAR_GEN3,
 };
 
 struct rcar_i2c_priv {
@@ -176,6 +177,7 @@ static int rcar_i2c_clock_calculate(struct rcar_i2c_priv *priv,
                 cdf_width = 2;
                 break;
         case I2C_RCAR_GEN2:
+        case I2C_RCAR_GEN3:
                 cdf_width = 3;
                 break;
         default:
@@ -573,6 +575,7 @@ static const struct of_device_id rcar_i2c_dt_ids[] = {
         { .compatible = "renesas,i2c-r8a7792", .data = (void *)I2C_RCAR_GEN2 },
         { .compatible = "renesas,i2c-r8a7793", .data = (void *)I2C_RCAR_GEN2 },
         { .compatible = "renesas,i2c-r8a7794", .data = (void *)I2C_RCAR_GEN2 },
+        { .compatible = "renesas,i2c-r8a7795", .data = (void *)I2C_RCAR_GEN3 },
         {},
 };
 MODULE_DEVICE_TABLE(of, rcar_i2c_dt_ids);