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Commit 61f25ca7 authored by Tero Kristo's avatar Tero Kristo
Browse files

ARM: OMAP2: clock: add DT boot support for cpufreq_ck 



The clock and clkdev for this are added manually.

Signed-off-by: default avatarTero Kristo <t-kristo@ti.com>
parent be67c3bf

arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c

+53 −0
Original line number Diff line number Diff line
@@ -208,3 +208,56 @@ void omap2xxx_clkt_vps_late_init(void) 
		clk_put(c);

	}

}



#ifdef CONFIG_OF

#include <linux/clk-provider.h>

#include <linux/clkdev.h>



static const struct clk_ops virt_prcm_set_ops = {

	.recalc_rate	= &omap2_table_mpu_recalc,

	.set_rate	= &omap2_select_table_rate,

	.round_rate	= &omap2_round_to_table_rate,

};



/**

 * omap2xxx_clkt_vps_init - initialize virt_prcm_set clock

 *

 * Does a manual init for the virtual prcm DVFS clock for OMAP2. This

 * function is called only from omap2 DT clock init, as the virtual

 * node is not modelled in the DT clock data.

 */

void omap2xxx_clkt_vps_init(void)

{

	struct clk_init_data init = { NULL };

	struct clk_hw_omap *hw = NULL;

	struct clk *clk;

	const char *parent_name = "mpu_ck";

	struct clk_lookup *lookup = NULL;



	omap2xxx_clkt_vps_late_init();

	omap2xxx_clkt_vps_check_bootloader_rates();



	hw = kzalloc(sizeof(*hw), GFP_KERNEL);

	lookup = kzalloc(sizeof(*lookup), GFP_KERNEL);

	if (!hw || !lookup)

		goto cleanup;

	init.name = "virt_prcm_set";

	init.ops = &virt_prcm_set_ops;

	init.parent_names = &parent_name;

	init.num_parents = 1;



	hw->hw.init = &init;



	clk = clk_register(NULL, &hw->hw);



	lookup->dev_id = NULL;

	lookup->con_id = "cpufreq_ck";

	lookup->clk = clk;



	clkdev_add(lookup);

	return;

cleanup:

	kfree(hw);

	kfree(lookup);

}

#endif

drivers/clk/ti/clk-2xxx.c

+2 −0
Original line number Diff line number Diff line
@@ -229,6 +229,8 @@ static int __init omap2xxx_dt_clk_init(int soc_type) 
	else

		ti_dt_clocks_register(omap2430_clks);



	omap2xxx_clkt_vps_init();



	omap2_clk_disable_autoidle_all();



	omap2_clk_enable_init_clocks(enable_init_clks,

include/linux/clk/ti.h

+1 −0
Original line number Diff line number Diff line
@@ -283,6 +283,7 @@ unsigned long omap2_dpllcore_recalc(struct clk_hw *hw, 
int omap2_reprogram_dpllcore(struct clk_hw *clk, unsigned long rate,

			     unsigned long parent_rate);

void omap2xxx_clkt_dpllcore_init(struct clk_hw *hw);

void omap2xxx_clkt_vps_init(void);



void __iomem *ti_clk_get_reg_addr(struct device_node *node, int index);

void ti_dt_clocks_register(struct ti_dt_clk *oclks);