[PATCH v7 6/7] OPP: Update the bandwidth on OPP frequency changes

Georgi Djakov
2020-04-24T15:54:27Z

If the OPP bandwidth values are populated, we want to switch also the
interconnect bandwidth in addition to frequency and voltage.

Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
---
v7:
* Addressed review comments from Viresh.

v2: https://lore.kernel.org/r/20190423132823.7915-5-georgi.djakov@linaro.org

drivers/opp/core.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 8e86811eb7b2..66a8ea10f3de 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -808,7 +808,7 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
unsigned long freq, old_freq, temp_freq;
struct dev_pm_opp *old_opp, *opp;
struct clk *clk;
- int ret;
+ int ret, i;

opp_table = _find_opp_table(dev);
if (IS_ERR(opp_table)) {
@@ -895,6 +895,17 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
dev_err(dev, "Failed to set required opps: %d\n", ret);
}

+ if (!ret && opp_table->paths) {
+ for (i = 0; i < opp_table->path_count; i++) {
+ ret = icc_set_bw(opp_table->paths[i],
+ opp->bandwidth[i].avg,
+ opp->bandwidth[i].peak);
+ if (ret)
+ dev_err(dev, "Failed to set bandwidth[%d]: %d\n",
+ i, ret);
+ }
+ }
+
put_opp:
dev_pm_opp_put(opp);