[U-Boot] [PATCH] sysreset: syscon: remove POWER reset cause

[Patrick Delaunay]

The sysreset of 'POWER' type is a PMIC reset defined as
'remove and restore power'.
So normally only COLD/WARN is supported by sysreset_syscon.

This modification allows to use the function sysreset_walk(SYSRESET_POWER)
when it is supported by PMIC driver (see example in stpmic1).

Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
---

 drivers/sysreset/sysreset_syscon.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/sysreset/sysreset_syscon.c b/drivers/sysreset/sysreset_syscon.c
index 3fb39b9..1028160 100644
--- a/drivers/sysreset/sysreset_syscon.c
+++ b/drivers/sysreset/sysreset_syscon.c
@@ -24,6 +24,9 @@ static int syscon_reboot_request(struct udevice *dev, enum sysreset_t type)
 {
 	struct syscon_reboot_priv *priv = dev_get_priv(dev);
 
+	if (type == SYSRESET_POWER)
+		return -EPROTONOSUPPORT;
+
 	regmap_write(priv->regmap, priv->offset, priv->mask);
 
 	return -EINPROGRESS;
-- 
2.7.4