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cpufreq: rockchip: Add support to set intermediate rate

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When increase voltage the cpu frequency is increased at the same time,
but the read margin has not been reduced.

Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
Change-Id: I97097a5114abad193b7a29aeada390d0323b10ba
This commit is contained in:
Finley Xiao
2022-01-14 18:43:59 +08:00
committed by Tao Huang
parent e87424342d
commit 4e7484d451
1 changed files with 22 additions and 0 deletions
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22
drivers/cpufreq/rockchip-cpufreq.c
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@@ -36,6 +36,11 @@
#include "cpufreq-dt.h"
#include "rockchip-cpufreq.h"
#define CPUFREQ_INTERNAL_VERSION 0x80
#define CPUFREQ_LENGTH_MARGIN 0x1
#define CPUFREQ_INTERMEDIATE_RATE (CPUFREQ_INTERNAL_VERSION | \
CPUFREQ_LENGTH_MARGIN)
struct cluster_info {
struct list_head list_head;
struct monitor_dev_info *mdev_info;
@@ -350,6 +355,16 @@ static int rockchip_cpufreq_set_read_margin(struct device *dev,
return 0;
}
static int
rockchip_cpufreq_set_intermediate_rate(struct rockchip_opp_info *opp_info,
struct clk *clk, unsigned long new_freq)
{
if (opp_info->data && opp_info->data->set_read_margin)
return clk_set_rate(clk, new_freq | CPUFREQ_INTERMEDIATE_RATE);
return 0;
}
static int cpu_opp_helper(struct dev_pm_set_opp_data *data)
{
struct dev_pm_opp_supply *old_supply_vdd = &data->old_opp.supplies[0];
@@ -373,6 +388,13 @@ static int cpu_opp_helper(struct dev_pm_set_opp_data *data)
/* Scaling up? Scale voltage before frequency */
if (new_freq >= old_freq) {
ret = rockchip_cpufreq_set_intermediate_rate(opp_info, clk,
new_freq);
if (ret) {
dev_err(dev, "%s: failed to set clk rate: %lu\n",
__func__, new_freq);
return -EINVAL;
}
ret = rockchip_cpufreq_set_volt(dev, mem_reg, new_supply_mem,
"mem");
if (ret)