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Commit 6283e328 authored by Linus Walleij's avatar Linus Walleij Committed by Dave Jones
Browse files

[CPUFREQ] db8500: support all frequencies 



This adds support for the 200 MHz frequency mode of the
DB8500 SoC, and prints the available frequencies at init
time.

Cc: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarDave Jones <davej@redhat.com>
parent ded84337

drivers/cpufreq/db8500-cpufreq.c

+16 −8
Original line number Diff line number Diff line
@@ -18,24 +18,29 @@ 
static struct cpufreq_frequency_table freq_table[] = {

	[0] = {

		.index = 0,

		.frequency = 300000,

		.frequency = 200000,

	},

	[1] = {

		.index = 1,

		.frequency = 600000,

		.frequency = 300000,

	},

	[2] = {

		/* Used for MAX_OPP, if available */

		.index = 2,

		.frequency = CPUFREQ_TABLE_END,

		.frequency = 600000,

	},

	[3] = {

		/* Used for MAX_OPP, if available */

		.index = 3,

		.frequency = CPUFREQ_TABLE_END,

	},

	[4] = {

		.index = 4,

		.frequency = CPUFREQ_TABLE_END,

	},

};



static enum arm_opp idx2opp[] = {

	ARM_EXTCLK,

	ARM_50_OPP,

	ARM_100_OPP,

	ARM_MAX_OPP
@@ -108,12 +113,15 @@ static int __cpuinit db8500_cpufreq_init(struct cpufreq_policy *policy) 


	BUILD_BUG_ON(ARRAY_SIZE(idx2opp) + 1 != ARRAY_SIZE(freq_table));



	if (cpu_is_u8500v2() && !prcmu_is_u8400()) {

		freq_table[0].frequency = 400000;

		freq_table[1].frequency = 800000;

	if (!prcmu_is_u8400()) {

		freq_table[1].frequency = 400000;

		freq_table[2].frequency = 800000;

		if (prcmu_has_arm_maxopp())

			freq_table[2].frequency = 1000000;

			freq_table[3].frequency = 1000000;

	}

	pr_info("db8500-cpufreq : Available frequencies:\n");

	while (freq_table[i].frequency != CPUFREQ_TABLE_END)

		pr_info("  %d Mhz\n", freq_table[i++].frequency/1000);



	/* get policy fields based on the table */

	res = cpufreq_frequency_table_cpuinfo(policy, freq_table);