@@ -752,18 +752,30 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_of_remove_table);
static int _read_rate(struct dev_pm_opp *new_opp, struct opp_table *opp_table,
struct device_node *np)
{
- struct property *prop;
+ struct property *prop = NULL;
int i, count, ret;
u64 *rates;
+ char name[NAME_MAX];
- prop = of_find_property(np, "opp-hz", NULL);
- if (!prop)
- return -ENODEV;
+ /* Search for "opp-hz-<name>" */
+ if (opp_table->prop_name) {
+ snprintf(name, sizeof(name), "opp-hz-%s",
+ opp_table->prop_name);
+ prop = of_find_property(np, name, NULL);
+ }
+
+ if (!prop) {
+ /* Search for "opp-hz" */
+ sprintf(name, "opp-hz");
+ prop = of_find_property(np, name, NULL);
+ if (!prop)
+ return -ENODEV;
+ }
count = prop->length / sizeof(u64);
if (opp_table->clk_count != count) {
- pr_err("%s: Count mismatch between opp-hz and clk_count (%d %d)\n",
- __func__, count, opp_table->clk_count);
+ pr_err("%s: Count mismatch between %s and clk_count (%d %d)\n",
+ __func__, name, count, opp_table->clk_count);
return -EINVAL;
}
@@ -771,9 +783,9 @@ static int _read_rate(struct dev_pm_opp *new_opp, struct opp_table *opp_table,
if (!rates)
return -ENOMEM;
- ret = of_property_read_u64_array(np, "opp-hz", rates, count);
+ ret = of_property_read_u64_array(np, name, rates, count);
if (ret) {
- pr_err("%s: Error parsing opp-hz: %d\n", __func__, ret);
+ pr_err("%s: Error parsing %s: %d\n", __func__, name, ret);
} else {
/*
* Rate is defined as an unsigned long in clk API, and so
Current OPP driver only supports a single frequency value per OPP entry using `opp-hz`. This patch extends the functionality to allow retrieving named frequency points using `opp-hz-<name>`, improving flexibility for different operating modes. Signed-off-by: Zxyan Zhu <zxyan20@163.com> --- drivers/opp/of.c | 28 ++++++++++++++++++++-------- 1 file changed, 20 insertions(+), 8 deletions(-)