sysreset: syscon: add support for power off

The new type sysreset 'POWER_OFF', introduced by
commit 751fed426f87 ("sysreset: Add a way to find the last reset")
is only supported for "syscon-poweroff" compatible.

For details see Linux binding:
./Documentation/devicetree/bindings/power/reset/syscon-poweroff.txt

This patch removes the support of POWER_OFF for "syscon-reboot"
and keeps only the COLD reset (for command reset support)
and it introduces the compatible "syscon-poweroff"
for the POWER_OFF case.

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

diff --git a/drivers/sysreset/sysreset_syscon.c b/drivers/sysreset/sysreset_syscon.c
index 1028160247ac4171ca6f881702d48a1985798fa8..d0e586f66f6ddaa4a90eaae202d82d93f8b6efb5 100644 (file)
--- a/drivers/sysreset/sysreset_syscon.c
+++ b/drivers/sysreset/sysreset_syscon.c
@@ -23,8 +23,9 @@ struct syscon_reboot_priv {
 static int syscon_reboot_request(struct udevice *dev, enum sysreset_t type)
 {
        struct syscon_reboot_priv *priv = dev_get_priv(dev);
+       ulong driver_data = dev_get_driver_data(dev);
 
-       if (type == SYSRESET_POWER)
+       if (type != driver_data)
                return -EPROTONOSUPPORT;
 
        regmap_write(priv->regmap, priv->offset, priv->mask);
@@ -53,7 +54,8 @@ int syscon_reboot_probe(struct udevice *dev)
 }
 
 static const struct udevice_id syscon_reboot_ids[] = {
-       { .compatible = "syscon-reboot" },
+       { .compatible = "syscon-reboot", .data = SYSRESET_COLD },
+       { .compatible = "syscon-poweroff", .data = SYSRESET_POWER_OFF },
        { /* sentinel */ }
 };