ARM: am57xx_evm: Enable QSPI support

AM571x IDK and AM572x IDK EVMs have spansion s25fl256s QSPI flash on the
board connected to TI QSPI IP over CS0. Therefore enable QSPI support.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Jagan Teki <jteki@openedev.com>

configs/am57xx_evm_defconfig

@@ -41,3 +41,8 @@ CONFIG_SPL_OF_LIBFDT=y
 CONFIG_SPL_LOAD_FIT=y
 CONFIG_OF_LIST="am57xx-beagle-x15 am572x-idk"
 CONFIG_DM_I2C=y
+CONFIG_DM_SPI=y
+CONFIG_DM_SPI_FLASH=y
+CONFIG_SPI_FLASH_SPANSION=y
+CONFIG_TI_QSPI=y
+CONFIG_CMD_SF=y

configs/am57xx_evm_nodt_defconfig

@@ -26,3 +26,8 @@ CONFIG_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_OF_LIBFDT=y
+CONFIG_SPI_FLASH=y
+CONFIG_SPI_FLASH_BAR=y
+CONFIG_SPI_FLASH_SPANSION=y
+CONFIG_TI_QSPI=y
+CONFIG_CMD_SF=y

configs/am57xx_hs_evm_defconfig

@@ -43,3 +43,8 @@ CONFIG_SPL_LOAD_FIT=y
 CONFIG_SPL_FIT_IMAGE_POST_PROCESS=y
 CONFIG_OF_LIST="am57xx-beagle-x15"
 CONFIG_DM_I2C=y
+CONFIG_DM_SPI=y
+CONFIG_DM_SPI_FLASH=y
+CONFIG_SPI_FLASH_SPANSION=y
+CONFIG_TI_QSPI=y
+CONFIG_CMD_SF=y

include/configs/am57xx_evm.h

@@ -86,4 +86,40 @@
 #define CONFIG_EEPROM_CHIP_ADDRESS 0x50
 #define CONFIG_EEPROM_BUS_ADDRESS 0
 
+/*
+ * Default to using SPI for environment, etc.
+ * 0x000000 - 0x040000 : QSPI.SPL (256KiB)
+ * 0x040000 - 0x140000 : QSPI.u-boot (1MiB)
+ * 0x140000 - 0x1C0000 : QSPI.u-boot-spl-os (512KiB)
+ * 0x1C0000 - 0x1D0000 : QSPI.u-boot-env (64KiB)
+ * 0x1D0000 - 0x1E0000 : QSPI.u-boot-env.backup1 (64KiB)
+ * 0x1E0000 - 0x9E0000 : QSPI.kernel (8MiB)
+ * 0x9E0000 - 0x2000000 : USERLAND
+ */
+#define CONFIG_SYS_SPI_KERNEL_OFFS      0x1E0000
+#define CONFIG_SYS_SPI_ARGS_OFFS        0x140000
+#define CONFIG_SYS_SPI_ARGS_SIZE        0x80000
+
+#ifdef CONFIG_SPL_BUILD
+#undef CONFIG_DM_SPI
+#undef CONFIG_DM_SPI_FLASH
+#undef CONFIG_SPL_MAX_SIZE
+#define CONFIG_SPL_MAX_SIZE             (256 << 10) /* 256 KiB */
+#endif
+
+/* SPI SPL */
+#define CONFIG_SPL_SPI_SUPPORT
+#define CONFIG_SPL_DMA_SUPPORT
+#define CONFIG_TI_EDMA3
+#define CONFIG_SPL_SPI_LOAD
+#define CONFIG_SPL_SPI_FLASH_SUPPORT
+#define CONFIG_SYS_SPI_U_BOOT_OFFS     0x40000
+
+/* SPI */
+#undef	CONFIG_OMAP3_SPI
+#define CONFIG_TI_SPI_MMAP
+#define CONFIG_SF_DEFAULT_SPEED                76800000
+#define CONFIG_SF_DEFAULT_MODE                 SPI_MODE_0
+#define CONFIG_QSPI_QUAD_SUPPORT
+
 #endif /* __CONFIG_AM57XX_EVM_H */