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Commit 4eb9560b authored by Chen-Yu Tsai's avatar Chen-Yu Tsai Committed by Lee Jones
Browse files

mfd: sun6i-prcm: Add support for Allwinner A23 PRCM 



The Allwinner A23 SoC has a PRCM unit like the previous A31 SoC.
The differences are the AR100 clock can no longer be modified,
the APB0 clock has different divisors, and some clock gates are
gone.

This patch adds a compatible with a modified subdevice list for
the A23.

Signed-off-by: default avatarChen-Yu Tsai <wens@csie.org>
Acked-by: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
parent 4362175d

Documentation/devicetree/bindings/mfd/sun6i-prcm.txt

+1 −1
Original line number Diff line number Diff line
@@ -4,7 +4,7 @@ PRCM is an MFD device exposing several Power Management related devices 
(like clks and reset controllers).



Required properties:

 - compatible: "allwinner,sun6i-a31-prcm"

 - compatible: "allwinner,sun6i-a31-prcm" or "allwinner,sun8i-a23-prcm"

 - reg: The PRCM registers range



The prcm node may contain several subdevices definitions:

drivers/mfd/sun6i-prcm.c

+30 −0
Original line number Diff line number Diff line
@@ -76,16 +76,46 @@ static const struct mfd_cell sun6i_a31_prcm_subdevs[] = { 
	},

};



static const struct mfd_cell sun8i_a23_prcm_subdevs[] = {

	{

		.name = "sun8i-a23-apb0-clk",

		.of_compatible = "allwinner,sun8i-a23-apb0-clk",

		.num_resources = ARRAY_SIZE(sun6i_a31_apb0_clk_res),

		.resources = sun6i_a31_apb0_clk_res,

	},

	{

		.name = "sun6i-a31-apb0-gates-clk",

		.of_compatible = "allwinner,sun8i-a23-apb0-gates-clk",

		.num_resources = ARRAY_SIZE(sun6i_a31_apb0_gates_clk_res),

		.resources = sun6i_a31_apb0_gates_clk_res,

	},

	{

		.name = "sun6i-a31-apb0-clock-reset",

		.of_compatible = "allwinner,sun6i-a31-clock-reset",

		.num_resources = ARRAY_SIZE(sun6i_a31_apb0_rstc_res),

		.resources = sun6i_a31_apb0_rstc_res,

	},

};



static const struct prcm_data sun6i_a31_prcm_data = {

	.nsubdevs = ARRAY_SIZE(sun6i_a31_prcm_subdevs),

	.subdevs = sun6i_a31_prcm_subdevs,

};



static const struct prcm_data sun8i_a23_prcm_data = {

	.nsubdevs = ARRAY_SIZE(sun8i_a23_prcm_subdevs),

	.subdevs = sun8i_a23_prcm_subdevs,

};



static const struct of_device_id sun6i_prcm_dt_ids[] = {

	{

		.compatible = "allwinner,sun6i-a31-prcm",

		.data = &sun6i_a31_prcm_data,

	},

	{

		.compatible = "allwinner,sun8i-a23-prcm",

		.data = &sun8i_a23_prcm_data,

	},

	{ /* sentinel */ },

};