diff options
Diffstat (limited to 'drivers/spi/cadence_ospi_versal.c')
| -rw-r--r-- | drivers/spi/cadence_ospi_versal.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/spi/cadence_ospi_versal.c b/drivers/spi/cadence_ospi_versal.c index 816916de16d..fbeb0c6a85c 100644 --- a/drivers/spi/cadence_ospi_versal.c +++ b/drivers/spi/cadence_ospi_versal.c @@ -204,3 +204,22 @@ void cadence_qspi_apb_enable_linear_mode(bool enable) ~VERSAL_OSPI_LINEAR_MODE, VERSAL_AXI_MUX_SEL); } } + +int cadence_device_reset(struct udevice *bus) +{ + struct cadence_spi_priv *priv = dev_get_priv(bus); + u32 reg; + + reg = readl(priv->regbase + CQSPI_REG_CONFIG); + reg |= CQSPI_REG_CONFIG_RESET_CFG_FLD_MASK; + writel(reg, priv->regbase + CQSPI_REG_CONFIG); + + writel(reg & ~CQSPI_REG_CONFIG_RESET_PIN_FLD_MASK, priv->regbase + CQSPI_REG_CONFIG); + udelay(5); + writel(reg | CQSPI_REG_CONFIG_RESET_PIN_FLD_MASK, priv->regbase + CQSPI_REG_CONFIG); + udelay(150); + writel(reg & ~CQSPI_REG_CONFIG_RESET_PIN_FLD_MASK, priv->regbase + CQSPI_REG_CONFIG); + udelay(1200); + + return 0; +} |