diff options
| author | Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> | 2019-03-01 20:12:35 +0100 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2019-04-17 22:20:17 +0200 |
| commit | ac7e14ae0d36023dd32400a8eab9433a54e77b83 (patch) | |
| tree | 30b65cf693fd3c01b44e4b2c3cf9040eb528cae8 /drivers/spi/cadence_qspi.c | |
| parent | ed784ac3822b7d7019679a41a17907296e2dadbe (diff) | |
spi: cadence_qspi: add reset handling
This adds reset handling to the cadence qspi driver.
For backwards compatibility, only a warning is printed when failing to
get reset handles.
Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Diffstat (limited to 'drivers/spi/cadence_qspi.c')
| -rw-r--r-- | drivers/spi/cadence_qspi.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/spi/cadence_qspi.c b/drivers/spi/cadence_qspi.c index efdb178450..41c87004d8 100644 --- a/drivers/spi/cadence_qspi.c +++ b/drivers/spi/cadence_qspi.c @@ -8,6 +8,7 @@ #include <dm.h> #include <fdtdec.h> #include <malloc.h> +#include <reset.h> #include <spi.h> #include <linux/errno.h> #include "cadence_qspi.h" @@ -154,10 +155,17 @@ static int cadence_spi_probe(struct udevice *bus) { struct cadence_spi_platdata *plat = bus->platdata; struct cadence_spi_priv *priv = dev_get_priv(bus); + int ret; priv->regbase = plat->regbase; priv->ahbbase = plat->ahbbase; + 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); + if (!priv->qspi_is_init) { cadence_qspi_apb_controller_init(plat); priv->qspi_is_init = 1; @@ -166,6 +174,13 @@ static int cadence_spi_probe(struct udevice *bus) return 0; } +static int cadence_spi_remove(struct udevice *dev) +{ + struct cadence_spi_priv *priv = dev_get_priv(dev); + + return reset_release_bulk(&priv->resets); +} + static int cadence_spi_set_mode(struct udevice *bus, uint mode) { struct cadence_spi_priv *priv = dev_get_priv(bus); @@ -342,4 +357,6 @@ U_BOOT_DRIVER(cadence_spi) = { .platdata_auto_alloc_size = sizeof(struct cadence_spi_platdata), .priv_auto_alloc_size = sizeof(struct cadence_spi_priv), .probe = cadence_spi_probe, + .remove = cadence_spi_remove, + .flags = DM_FLAG_OS_PREPARE, }; |