From: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
The cpufreq table needs dynamically update due to what the PRCMU
firmware is supporting. The table is then provided through to the
mfd child device as platform data.
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Acked-by: Jonas Aaberg <jonas.aberg@xxxxxxxxxxxxxx>
Cc: Samuel Ortiz <sameo@xxxxxxxxxxxxxxx>
---
drivers/mfd/db8500-prcmu.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c
index 00b8b0f..53c24c4 100644
--- a/drivers/mfd/db8500-prcmu.c
+++ b/drivers/mfd/db8500-prcmu.c
@@ -31,6 +31,7 @@
#include <linux/mfd/abx500/ab8500.h>
#include <linux/regulator/db8500-prcmu.h>
#include <linux/regulator/machine.h>
+#include <linux/cpufreq.h>
#include <asm/hardware/gic.h>
#include <mach/hardware.h>
#include <mach/irqs.h>
@@ -3002,6 +3003,15 @@ static struct regulator_init_data db8500_regulators[DB8500_NUM_REGULATORS] = {
},
};
+/* CPU FREQ table, may be changed due to if MAX_OPP is supported. */
+static struct cpufreq_frequency_table db8500_cpufreq_table[] = {
+ { .frequency = 200000, .index = ARM_EXTCLK,},
+ { .frequency = 400000, .index = ARM_50_OPP,},
+ { .frequency = 800000, .index = ARM_100_OPP,},
+ { .frequency = CPUFREQ_TABLE_END,}, /* To be used for MAX_OPP. */
+ { .frequency = CPUFREQ_TABLE_END,},
+};
+
static struct resource ab8500_resources[] = {
[0] = {
.start = IRQ_DB8500_AB8500,
@@ -3020,6 +3030,8 @@ static struct mfd_cell db8500_prcmu_devs[] = {
{
.name = "cpufreq-u8500",
.of_compatible = "stericsson,cpufreq-u8500",
+ .platform_data = &db8500_cpufreq_table,
+ .pdata_size = sizeof(db8500_cpufreq_table),
},
{
.name = "ab8500-core",
@@ -3030,6 +3042,14 @@ static struct mfd_cell db8500_prcmu_devs[] = {
},
};
+static void db8500_prcmu_update_cpufreq(void)
+{
+ if (prcmu_has_arm_maxopp()) {
+ db8500_cpufreq_table[3].frequency = 1000000;
+ db8500_cpufreq_table[3].index = ARM_MAX_OPP;
+ }
+}
+
/**
* prcmu_fw_init - arch init call for the Linux PRCMU fw init logic
*
@@ -3074,6 +3094,8 @@ static int __devinit db8500_prcmu_probe(struct platform_device *pdev)
if (cpu_is_u8500v20_or_later())
prcmu_config_esram0_deep_sleep(ESRAM0_DEEP_SLEEP_STATE_RET);
+ db8500_prcmu_update_cpufreq();
+
err = mfd_add_devices(&pdev->dev, 0, db8500_prcmu_devs,
ARRAY_SIZE(db8500_prcmu_devs), NULL, 0, NULL);
if (err) {
--
1.7.10
--
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