diff options
| author | Venkatesh Yadav Abbarapu <venkatesh.abbarapu@amd.com> | 2025-03-11 09:43:17 +0530 |
|---|---|---|
| committer | Michal Simek <michal.simek@amd.com> | 2025-04-16 13:42:06 +0200 |
| commit | 3243f71b64db89b8a6c045d41379b65aceabdd3c (patch) | |
| tree | c06e39949efb0d0c8d7daf72688f1c2695498f72 /drivers/spi/cadence_ospi_versal.c | |
| parent | 5ffab6ee1279fe86ab21b529a04b1638a6664eaf (diff) | |
spi: cadence_ospi: Add device reset via OSPI controller
Add support for flash device reset via OSPI controller
instead of using GPIO, as OSPI IP has device reset
feature on Versal Gen2 platform. Also add compatible
string for Versal Gen2 platform.
Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@amd.com>
Link: https://lore.kernel.org/r/20250311041317.2992862-1-venkatesh.abbarapu@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
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; +} |