power: reset: syscon-poweroff: get regmap from parent node

Just like syscon-reboot device, the syscon-poweroff is supposed to be a
child of syscon node, thus we can take the same approach as
syscon-poweroff: deprecate the 'regmap' field in favor of taking it from
the parent's node.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230901120057.47018-3-krzysztof.kozlowski@linaro.org
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

diff --git a/drivers/power/reset/syscon-poweroff.c b/drivers/power/reset/syscon-poweroff.c
index 9ef7eef4c9795d5876e08df3f730b1227241e53d..c3aab7f59345a502a31713b54682dbf960dec10f 100644 (file)
--- a/drivers/power/reset/syscon-poweroff.c
+++ b/drivers/power/reset/syscon-poweroff.c
@@ -37,8 +37,11 @@ static int syscon_poweroff_probe(struct platform_device *pdev)
 
        map = syscon_regmap_lookup_by_phandle(dev->of_node, "regmap");
        if (IS_ERR(map)) {
-               dev_err(dev, "unable to get syscon");
-               return PTR_ERR(map);
+               map = syscon_node_to_regmap(dev->parent->of_node);
+               if (IS_ERR(map)) {
+                       dev_err(dev, "unable to get syscon");
+                       return PTR_ERR(map);
+               }
        }
 
        if (of_property_read_u32(dev->of_node, "offset", &offset)) {