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reset: zynqmp: Implement rst_reset using PM_RESET_ACTION_PULSE

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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().

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/be77d6f1b60f591ef626c14229d85c5cab867967.1779709539.git.michal.simek@amd.com
This commit is contained in:
Michal Simek
2026-05-25 13:45:46 +02:00
parent f59b7a010e
commit 8efa173b38
1 changed files with 11 additions and 0 deletions
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11
drivers/reset/reset-zynqmp.c
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@@ -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, ulong delay_us)
{
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[] = {