[PATCH 4/4] reset: zynqmp: Implement rst_reset using PM_RESET_ACTION_PULSE

[Michal Simek]

Implement the rst_reset operation in the ZynqMP reset driver to use
PM_RESET_ACTION_PULSE. This allows the reset controller to perform
a reset pulse in a single firmware call instead of separate assert
and deassert calls.

This matches the Linux kernel implementation of zynqmp_reset_reset().

Signed-off-by: Michal Simek <michal.simek at amd.com>
---

 drivers/reset/reset-zynqmp.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/reset/reset-zynqmp.c b/drivers/reset/reset-zynqmp.c
index d04e8eef3bb4..b87085b6c5e1 100644
--- a/drivers/reset/reset-zynqmp.c
+++ b/drivers/reset/reset-zynqmp.c
@@ -45,6 +45,16 @@ static int zynqmp_reset_deassert(struct reset_ctl *rst)
 				      PM_RESET_ACTION_RELEASE);
 }
 
+static int zynqmp_reset_reset(struct reset_ctl *rst)
+{
+	struct zynqmp_reset_priv *priv = dev_get_priv(rst->dev);
+
+	dev_dbg(rst->dev, "%s(rst=%p) (id=%lu)\n", __func__, rst, rst->id);
+
+	return zynqmp_pm_reset_assert(priv->reset_id + rst->id,
+				      PM_RESET_ACTION_PULSE);
+}
+
 static int zynqmp_reset_request(struct reset_ctl *rst)
 {
 	struct zynqmp_reset_priv *priv = dev_get_priv(rst->dev);
@@ -74,6 +84,7 @@ const struct reset_ops zynqmp_reset_ops = {
 	.request = zynqmp_reset_request,
 	.rst_assert = zynqmp_reset_assert,
 	.rst_deassert = zynqmp_reset_deassert,
+	.rst_reset = zynqmp_reset_reset,
 };
 
 static const struct udevice_id zynqmp_reset_ids[] = {
-- 
2.43.0