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Commit ee200119 authored by Tero Kristo's avatar Tero Kristo
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ARM: OMAP2: PRM: add support for OMAP2 specific clock providers 



This patch adds support for initializing also omap2-prcm and omap2-scrm
through DT.

Signed-off-by: default avatarTero Kristo <t-kristo@ti.com>
parent a37f05ac

Documentation/devicetree/bindings/arm/omap/prcm.txt

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OMAP PRCM bindings



Power Reset and Clock Manager lists the device clocks and clockdomains under

a DT hierarchy. Each TI SoC can have multiple PRCM entities listed for it,

each describing one module and the clock hierarchy under it. see [1] for

documentation about the individual clock/clockdomain nodes.



[1] Documentation/devicetree/bindings/clock/ti/*



Required properties:

- compatible:	Must be one of:

		"ti,am3-prcm"

		"ti,am3-scrm"

		"ti,am4-prcm"

		"ti,am4-scrm"

		"ti,omap2-prcm"

		"ti,omap2-scrm"

		"ti,omap3-prm"

		"ti,omap3-cm"

		"ti,omap3-scrm"

		"ti,omap4-cm1"

		"ti,omap4-prm"

		"ti,omap4-cm2"

		"ti,omap4-scrm"

		"ti,omap5-prm"

		"ti,omap5-cm-core-aon"

		"ti,omap5-scrm"

		"ti,omap5-cm-core"

		"ti,dra7-prm"

		"ti,dra7-cm-core-aon"

		"ti,dra7-cm-core"

- reg:		Contains PRCM module register address range

		(base address and length)

- clocks:	clocks for this module

- clockdomains:	clockdomains for this module



Example:



cm: cm@48004000 {

	compatible = "ti,omap3-cm";

	reg = <0x48004000 0x4000>;



	cm_clocks: clocks {

		#address-cells = <1>;

		#size-cells = <0>;

	};



	cm_clockdomains: clockdomains {

	};

}



&cm_clocks {

	omap2_32k_fck: omap_32k_fck {

		#clock-cells = <0>;

		compatible = "fixed-clock";

		clock-frequency = <32768>;

	};

};



&cm_clockdomains {

	core_l3_clkdm: core_l3_clkdm {

		compatible = "ti,clockdomain";

		clocks = <&sdrc_ick>;

	};

};

arch/arm/mach-omap2/prm_common.c

+2 −0
Original line number Diff line number Diff line
@@ -472,6 +472,8 @@ static struct of_device_id omap_prcm_dt_match_table[] = { 
	{ .compatible = "ti,am3-scrm" },

	{ .compatible = "ti,am4-prcm" },

	{ .compatible = "ti,am4-scrm" },

	{ .compatible = "ti,omap2-prcm" },

	{ .compatible = "ti,omap2-scrm" },

	{ .compatible = "ti,omap3-prm" },

	{ .compatible = "ti,omap3-cm" },

	{ .compatible = "ti,omap3-scrm" },