Commit b880ccaf authored by Simon Horman's avatar Simon Horman Committed by Wolfram Sang
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i2c: sh_mobile: Add per-Generation fallback bindings 



Add per-Generation fallback bindings for R-Car SoCs.

This is in keeping with the compatibility string scheme is being adopted
for drivers for Renesas SoCs.

Also, improve readability by listing the rmobile fallback compatibility
string after the more-specific compatibility strings they provide a
fallback for.

Signed-off-by: default avatarSimon Horman <horms+renesas@verge.net.au>
Acked-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
parent ad4a8dc3

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

+14 −3
Original line number Diff line number Diff line 
Device tree configuration for Renesas IIC (sh_mobile) driver



Required properties:

- compatible      : "renesas,iic-<soctype>". "renesas,rmobile-iic" as fallback

		     Examples with soctypes are:

- compatible      :

			- "renesas,iic-r8a73a4" (R-Mobile APE6)

			- "renesas,iic-r8a7740" (R-Mobile A1)

			- "renesas,iic-r8a7790" (R-Car H2)
@@ -12,6 +11,17 @@ Required properties: 
			- "renesas,iic-r8a7794" (R-Car E2)

			- "renesas,iic-r8a7795" (R-Car H3)

			- "renesas,iic-sh73a0" (SH-Mobile AG5)

			- "renesas,rcar-gen2-iic" (generic R-Car Gen2 compatible device)

			- "renesas,rcar-gen3-iic" (generic R-Car Gen3 compatible device)

			- "renesas,rmobile-iic" (generic device)



			When compatible with a generic R-Car version, nodes

			must list the SoC-specific version corresponding to

			the platform first followed by the generic R-Car

			version.



			renesas,rmobile-iic must always follow.



- reg             : address start and address range size of device

- interrupts      : interrupt of device

- clocks          : clock for device
@@ -31,7 +41,8 @@ Pinctrl properties might be needed, too. See there. 
Example:



	iic0: i2c@e6500000 {

		compatible = "renesas,iic-r8a7790", "renesas,rmobile-iic";

		compatible = "renesas,iic-r8a7790", "renesas,rcar-gen2-iic",

			     "renesas,rmobile-iic";

		reg = <0 0xe6500000 0 0x425>;

		interrupts = <0 174 IRQ_TYPE_LEVEL_HIGH>;

		clocks = <&mstp3_clks R8A7790_CLK_IIC0>;

drivers/i2c/busses/i2c-sh_mobile.c

+3 −1
Original line number Diff line number Diff line
@@ -827,7 +827,6 @@ static const struct sh_mobile_dt_config r8a7740_dt_config = { 
};



static const struct of_device_id sh_mobile_i2c_dt_ids[] = {

	{ .compatible = "renesas,rmobile-iic", .data = &default_dt_config },

	{ .compatible = "renesas,iic-r8a73a4", .data = &fast_clock_dt_config },

	{ .compatible = "renesas,iic-r8a7740", .data = &r8a7740_dt_config },

	{ .compatible = "renesas,iic-r8a7790", .data = &fast_clock_dt_config },
@@ -835,8 +834,11 @@ static const struct of_device_id sh_mobile_i2c_dt_ids[] = { 
	{ .compatible = "renesas,iic-r8a7792", .data = &fast_clock_dt_config },

	{ .compatible = "renesas,iic-r8a7793", .data = &fast_clock_dt_config },

	{ .compatible = "renesas,iic-r8a7794", .data = &fast_clock_dt_config },

	{ .compatible = "renesas,rcar-gen2-iic", .data = &fast_clock_dt_config },

	{ .compatible = "renesas,iic-r8a7795", .data = &fast_clock_dt_config },

	{ .compatible = "renesas,rcar-gen3-iic", .data = &fast_clock_dt_config },

	{ .compatible = "renesas,iic-sh73a0", .data = &fast_clock_dt_config },

	{ .compatible = "renesas,rmobile-iic", .data = &default_dt_config },

	{},

};

MODULE_DEVICE_TABLE(of, sh_mobile_i2c_dt_ids);

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