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spi: cadence-qspi: Make reset control optional

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In the TI am65 device tree files there is no reset defined. Also
the Linux kernel driver uses devm_reset_control_get_optional_exclusive(..)
to get the reset.

Lets do the same as the kernel does and make thr reset optinal.

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
This commit is contained in:
Christian Gmeiner 2022-02-22 17:23:25 +01:00 committed by Jagan Teki
parent 90de95f744
commit e145606ff2
2 changed files with 9 additions and 7 deletions
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14
drivers/spi/cadence_qspi.c
View file

@ -201,11 +201,9 @@ static int cadence_spi_probe(struct udevice *bus)
}
}
ret = reset_get_bulk(bus, &priv->resets);
if (ret)
dev_warn(bus, "Can't get reset: %d\n", ret);
else
reset_deassert_bulk(&priv->resets);
priv->resets = devm_reset_bulk_get_optional(bus);
if (priv->resets)
reset_deassert_bulk(priv->resets);
if (!priv->qspi_is_init) {
cadence_qspi_apb_controller_init(plat);
@ -220,8 +218,12 @@ static int cadence_spi_probe(struct udevice *bus)
static int cadence_spi_remove(struct udevice *dev)
{
struct cadence_spi_priv *priv = dev_get_priv(dev);
int ret = 0;
return reset_release_bulk(&priv->resets);
if (priv->resets)
ret = reset_release_bulk(priv->resets);
return ret;
}
static int cadence_spi_set_mode(struct udevice *bus, uint mode)

2
drivers/spi/cadence_qspi.h
View file

@ -56,7 +56,7 @@ struct cadence_spi_priv {
unsigned int qspi_calibrated_cs;
unsigned int previous_hz;
struct reset_ctl_bulk resets;
struct reset_ctl_bulk *resets;
};
/* Functions call declaration */