Commit 51f661ef authored by Tony Lindgren's avatar Tony Lindgren Committed by Stephen Boyd
Browse files

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



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: default avatarTony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20220204071449.16762-5-tony@atomide.com


Signed-off-by: default avatarStephen Boyd <sboyd@kernel.org>
parent 274d6798

drivers/clk/ti/clk.c

+41 −2
Original line number Diff line number Diff line
@@ -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");