cadence_qspi: Enable flash reset for Versal NET platform

Enable flash reset functionality for Versal NET platform.
In cadence_qspi.c there is weak function defined for reset, hence remove
the check for config, so that it will work for Versal and Versal NET
platforms.

Add register defines in Versal NET hardware.h for mini U-Boot flash
reset.

Add read_delay initialization for Versal NET also.

Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
Link: https://lore.kernel.org/r/20230614120452.21019-1-ashok.reddy.soma@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>

diff --git a/arch/arm/mach-versal-net/include/mach/hardware.h b/arch/arm/mach-versal-net/include/mach/hardware.h
index 3f04104..9bddb8b 100644 (file)
--- a/arch/arm/mach-versal-net/include/mach/hardware.h
+++ b/arch/arm/mach-versal-net/include/mach/hardware.h
@@ -81,3 +81,14 @@ enum versal_net_platform {
 #define VERSAL_SLCR_BASEADDR   0xF1060000
 #define VERSAL_AXI_MUX_SEL     (VERSAL_SLCR_BASEADDR + 0x504)
 #define VERSAL_OSPI_LINEAR_MODE        BIT(1)
+
+#define FLASH_RESET_GPIO       0xc
+#define WPROT_CRP      0xF126001C
+#define RST_GPIO       0xF1260318
+#define WPROT_LPD_MIO  0xFF080728
+#define WPROT_PMC_MIO  0xF1060828
+#define BOOT_MODE_DIR  0xF1020204
+#define BOOT_MODE_OUT  0xF1020208
+#define MIO_PIN_12     0xF1060030
+#define BANK0_OUTPUT   0xF1020040
+#define BANK0_TRI      0xF1060200

diff --git a/drivers/spi/cadence_ospi_versal.c b/drivers/spi/cadence_ospi_versal.c
index 434c603..a7685a2 100644 (file)
--- a/drivers/spi/cadence_ospi_versal.c
+++ b/drivers/spi/cadence_ospi_versal.c
@@ -130,7 +130,6 @@ int cadence_qspi_apb_wait_for_dma_cmplt(struct cadence_spi_priv *priv)
 #if defined(CONFIG_DM_GPIO)
 int cadence_qspi_versal_flash_reset(struct udevice *dev)
 {
-#ifndef CONFIG_ARCH_VERSAL_NET
        struct gpio_desc gpio;
        u32 reset_gpio;
        int ret;
@@ -166,7 +165,7 @@ int cadence_qspi_versal_flash_reset(struct udevice *dev)
        /* Set value 1 to pin */
        dm_gpio_set_value(&gpio, 1);
        udelay(1);
-#endif
+
        return 0;
 }
 #else

diff --git a/drivers/spi/cadence_qspi.c b/drivers/spi/cadence_qspi.c
index 2d715e4..cc3a54f 100644 (file)
--- a/drivers/spi/cadence_qspi.c
+++ b/drivers/spi/cadence_qspi.c
@@ -249,17 +249,14 @@ static int cadence_spi_probe(struct udevice *bus)
 
        priv->wr_delay = 50 * DIV_ROUND_UP(NSEC_PER_SEC, priv->ref_clk_hz);
 
-       if (IS_ENABLED(CONFIG_ARCH_VERSAL)) {
-               /* Versal platform uses spi calibration to set read delay */
+       /* Versal and Versal-NET use spi calibration to set read delay */
+       if (CONFIG_IS_ENABLED(ARCH_VERSAL) ||
+           CONFIG_IS_ENABLED(ARCH_VERSAL_NET))
                if (priv->read_delay >= 0)
                        priv->read_delay = -1;
-               /* Reset ospi flash device */
-               ret = cadence_qspi_versal_flash_reset(bus);
-               if (ret)
-                       return ret;
-       }
 
-       return 0;
+       /* Reset ospi flash device */
+       return cadence_qspi_versal_flash_reset(bus);
 }
 
 static int cadence_spi_remove(struct udevice *dev)