diff options
| author | Michal Simek <[email protected]> | 2026-05-25 13:45:44 +0200 |
|---|---|---|
| committer | Michal Simek <[email protected]> | 2026-06-08 10:50:06 +0200 |
| commit | 4e3f64c7cc0c6a5defdceb485313b8a33f231f10 (patch) | |
| tree | a548a2904f59d9363ea741c8c2893a5dc9161411 /drivers | |
| parent | 724d3cafe3ba8a2b3007c579bf52cd0612e6c565 (diff) | |
reset: sandbox: Cover reset_reset() fallback with second sandbox provider
Add a sandbox reset controller compatible string
"sandbox,reset-ctl-fallback-only" that reuses the existing sandbox assert,
deassert, request, and free helpers but omits rst_reset. That forces
reset_reset() through the core assert / udelay / deassert fallback.
Extend the reset-ctl-test DT node with a fifth reset line named "fallback"
that points at the new provider, and add dm_test_reset_reset_fallback_path
which verifies sandbox_reset_get_count() stays zero (rst_reset is never
invoked) while the line ends deasserted after reset_reset().
This complements the existing rst_reset coverage on sandbox,reset-ctl and
matches the approach of using a separate controller to exercise the
fallback path in unit tests.
Reviewed-by: Simon Glass <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
Link: https://lore.kernel.org/r/c1d40db6e2332a8b23ba842385b3f8c3d0290109.1779709539.git.michal.simek@amd.com
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/reset/sandbox-reset.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/reset/sandbox-reset.c b/drivers/reset/sandbox-reset.c index 458c332071f..12812f0f340 100644 --- a/drivers/reset/sandbox-reset.c +++ b/drivers/reset/sandbox-reset.c @@ -121,6 +121,33 @@ U_BOOT_DRIVER(sandbox_reset) = { .ops = &sandbox_reset_reset_ops, }; +/* + * Second sandbox reset controller for tests: same assert/deassert + * behaviour as sandbox_reset, but no rst_reset so reset_reset() uses + * the core assert / udelay / deassert fallback (reset_count never bumps). + */ +static const struct udevice_id sandbox_reset_fallback_ids[] = { + { .compatible = "sandbox,reset-ctl-fallback-only" }, + { } +}; + +static const struct reset_ops sandbox_reset_fallback_reset_ops = { + .request = sandbox_reset_request, + .rfree = sandbox_reset_free, + .rst_assert = sandbox_reset_assert, + .rst_deassert = sandbox_reset_deassert, +}; + +U_BOOT_DRIVER(sandbox_reset_fallback) = { + .name = "sandbox_reset_fallback", + .id = UCLASS_RESET, + .of_match = sandbox_reset_fallback_ids, + .bind = sandbox_reset_bind, + .probe = sandbox_reset_probe, + .priv_auto = sizeof(struct sandbox_reset), + .ops = &sandbox_reset_fallback_reset_ops, +}; + int sandbox_reset_query(struct udevice *dev, unsigned long id) { struct sandbox_reset *sbr = dev_get_priv(dev); |