mfd: db8500: Provide cpufreq table as platform data
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@linaro.org>
Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c
index 3167bfd..ea15650 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 @@
},
};
+/* 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 @@
{
.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 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 @@
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) {
