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Commit e7db0d34 authored by Wolfram Sang's avatar Wolfram Sang Committed by Wolfram Sang
Browse files

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: default avatarWolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
parent b2991676

Documentation/devicetree/bindings/i2c/i2c-rcar.txt

+1 −0
Original line number Diff line number Diff line
@@ -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.

drivers/i2c/busses/i2c-rcar.c

+3 −0
Original line number Diff line number Diff line
@@ -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);