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clk: ti: Add ti_find_clock_provider() to use clock-output-names

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Let's add ti_find_clock_provider() so we can use clock-output-names
to name the clock provider instead of relying on non-standard devicetree
node names.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20220204071449.16762-5-tony@atomide.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Tony Lindgren 2022-02-04 09:14:45 +02:00 committed by Stephen Boyd
parent 274d679810
commit 51f661ef9a
1 changed files with 41 additions and 2 deletions
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43
drivers/clk/ti/clk.c
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@ -119,12 +119,51 @@ int ti_clk_setup_ll_ops(struct ti_clk_ll_ops *ops)
return 0;
}
/*
* Eventually we could standardize to using '_' for clk-*.c files to follow the
* TRM naming and leave out the tmp name here.
*/
static struct device_node *ti_find_clock_provider(struct device_node *from,
const char *name)
{
struct device_node *np;
bool found = false;
const char *n;
char *tmp;
tmp = kstrdup(name, GFP_KERNEL);
if (!tmp)
return NULL;
strreplace(tmp, '-', '_');
/* Node named "clock" with "clock-output-names" */
for_each_of_allnodes_from(from, np) {
if (of_property_read_string_index(np, "clock-output-names",
0, &n))
continue;
if (!strncmp(n, tmp, strlen(tmp))) {
found = true;
break;
}
}
of_node_put(from);
kfree(tmp);
if (found)
return np;
/* Fall back to using old node name base provider name */
return of_find_node_by_name(from, name);
}
/**
* ti_dt_clocks_register - register DT alias clocks during boot
* @oclks: list of clocks to register
*
* Register alias or non-standard DT clock entries during boot. By
* default, DT clocks are found based on their node name. If any
* default, DT clocks are found based on their clock-output-names
* property, or the clock node name for legacy cases. If any
* additional con-id / dev-id -> clock mapping is required, use this
* function to list these.
*/
@ -168,7 +207,7 @@ void __init ti_dt_clocks_register(struct ti_dt_clk oclks[])
if (num_args && clkctrl_nodes_missing)
continue;
node = of_find_node_by_name(NULL, buf);
node = ti_find_clock_provider(NULL, buf);
if (num_args && compat_mode) {
parent = node;
child = of_get_child_by_name(parent, "clock");