diff options
Diffstat (limited to 'drivers/clk/clk-conf.c')
| -rw-r--r-- | drivers/clk/clk-conf.c | 43 |
1 files changed, 38 insertions, 5 deletions
diff --git a/drivers/clk/clk-conf.c b/drivers/clk/clk-conf.c index 058420562020..303a0bb26e54 100644 --- a/drivers/clk/clk-conf.c +++ b/drivers/clk/clk-conf.c @@ -10,6 +10,7 @@ #include <linux/device.h> #include <linux/of.h> #include <linux/printk.h> +#include <linux/slab.h> static int __set_clk_parents(struct device_node *node, bool clk_supplier) { @@ -81,11 +82,44 @@ err: static int __set_clk_rates(struct device_node *node, bool clk_supplier) { struct of_phandle_args clkspec; - int rc, index = 0; + int rc, count, count_64, index; struct clk *clk; - u32 rate; + u64 *rates_64 __free(kfree) = NULL; + u32 *rates __free(kfree) = NULL; + + count = of_property_count_u32_elems(node, "assigned-clock-rates"); + count_64 = of_property_count_u64_elems(node, "assigned-clock-rates-u64"); + if (count_64 > 0) { + count = count_64; + rates_64 = kcalloc(count, sizeof(*rates_64), GFP_KERNEL); + if (!rates_64) + return -ENOMEM; + + rc = of_property_read_u64_array(node, + "assigned-clock-rates-u64", + rates_64, count); + } else if (count > 0) { + rates = kcalloc(count, sizeof(*rates), GFP_KERNEL); + if (!rates) + return -ENOMEM; + + rc = of_property_read_u32_array(node, "assigned-clock-rates", + rates, count); + } else { + return 0; + } + + if (rc) + return rc; + + for (index = 0; index < count; index++) { + unsigned long rate; + + if (rates_64) + rate = rates_64[index]; + else + rate = rates[index]; - of_property_for_each_u32(node, "assigned-clock-rates", rate) { if (rate) { rc = of_parse_phandle_with_args(node, "assigned-clocks", "#clock-cells", index, &clkspec); @@ -112,12 +146,11 @@ static int __set_clk_rates(struct device_node *node, bool clk_supplier) rc = clk_set_rate(clk, rate); if (rc < 0) - pr_err("clk: couldn't set %s clk rate to %u (%d), current rate: %lu\n", + pr_err("clk: couldn't set %s clk rate to %lu (%d), current rate: %lu\n", __clk_get_name(clk), rate, rc, clk_get_rate(clk)); clk_put(clk); } - index++; } return 0; } |