Commit 5f7259a5 authored by Tony Lindgren's avatar Tony Lindgren
Browse files

bus: ti-sysc: Check for old incomplete dtb 



Let's be nice and show an error on the SoCs about old imcomplete devicetree
if the dtb is still using "simple-bus" instead of "simple-pm-bus" for the
root OCP node.

Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent f2dc0755

drivers/bus/ti-sysc.c

+16 −0
Original line number Diff line number Diff line
@@ -2858,6 +2858,7 @@ static int sysc_init_soc(struct sysc *ddata) 
	const struct soc_device_attribute *match;

	struct ti_sysc_platform_data *pdata;

	unsigned long features = 0;

	struct device_node *np;



	if (sysc_soc)

		return 0;
@@ -2878,6 +2879,21 @@ static int sysc_init_soc(struct sysc *ddata) 
	if (match && match->data)

		sysc_soc->soc = (int)match->data;



	/*

	 * Check and warn about possible old incomplete dtb. We now want to see

	 * simple-pm-bus instead of simple-bus in the dtb for genpd using SoCs.

	 */

	switch (sysc_soc->soc) {

	case SOC_AM3:

	case SOC_AM4:

		np = of_find_node_by_path("/ocp");

		WARN_ONCE(np && of_device_is_compatible(np, "simple-bus"),

			  "ti-sysc: Incomplete old dtb, please update\n");

		break;

	default:

		break;

	}



	/* Ignore devices that are not available on HS and EMU SoCs */

	if (!sysc_soc->general_purpose) {

		switch (sysc_soc->soc) {