arm64: versal: Add qspi flash mini u-boot configuration

Add configuration file for mini u-boot configuration which runs on a
smaller footprint from on chip memory(OCM). This configuration has
required CONFIG's enabled to support qspi flash and uses DCC terminal
for console output. Add required dts files for qspi mini configuration.

Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
Link: https://lore.kernel.org/r/20221116141155.14788-2-ashok.reddy.soma@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>

arch/arm/dts/Makefile

@@ -383,6 +383,7 @@ dtb-$(CONFIG_ARCH_VERSAL) += \
 	versal-mini.dtb \
 	versal-mini-emmc0.dtb \
 	versal-mini-emmc1.dtb \
+	versal-mini-qspi-single.dtb \
 	xilinx-versal-virt.dtb
 dtb-$(CONFIG_ARCH_VERSAL_NET) += \
 	versal-net-mini.dtb \

arch/arm/dts/versal-mini-qspi-single.dts

@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Xilinx Versal QSPI single DTS
+ *
+ * Copyright (C) 2018-2019 Xilinx, Inc.
+ */
+
+#include "versal-mini-qspi.dtsi"
+
+/ {
+	model = "Xilinx Versal MINI QSPI SINGLE";
+};
+
+&flash0 {
+	spi-rx-bus-width = <4>;
+};

arch/arm/dts/versal-mini-qspi.dtsi

@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * dts file for Xilinx Versal Mini QSPI Configuration
+ *
+ * (C) Copyright 2018-2019, Xilinx, Inc.
+ *
+ * Siva Durga Prasad <siva.durga.paladugu@xilinx.com>
+ * Michal Simek <michal.simek@xilinx.com>
+ */
+
+/dts-v1/;
+
+/ {
+	compatible = "xlnx,versal";
+	#address-cells = <2>;
+	#size-cells = <2>;
+	model = "Xilinx Versal MINI QSPI";
+
+	clk150: clk150 {
+		compatible = "fixed-clock";
+		#clock-cells = <0x0>;
+		clock-frequency = <150000000>;
+	};
+
+	dcc: dcc {
+		compatible = "arm,dcc";
+		status = "okay";
+		u-boot,dm-pre-reloc;
+	};
+
+	amba: amba {
+		u-boot,dm-pre-reloc;
+		compatible = "simple-bus";
+		#address-cells = <0x2>;
+		#size-cells = <0x2>;
+		ranges;
+
+		qspi: spi@f1030000 {
+			compatible = "xlnx,versal-qspi-1.0";
+			status = "okay";
+			clock-names = "ref_clk", "pclk";
+			num-cs = <0x1>;
+			reg = <0x0 0xf1030000 0x0 0x1000>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			clocks = <&clk150 &clk150>;
+
+			flash0: flash@0 {
+				compatible = "n25q512a", "micron,m25p80",
+					     "jedec,spi-nor";
+				reg = <0x0>;
+				spi-tx-bus-width = <4>;
+				spi-rx-bus-width = <4>;
+				spi-max-frequency = <20000000>;
+			};
+		};
+	};
+
+	aliases {
+		serial0 = &dcc;
+		spi0 = &qspi;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200";
+	};
+
+	memory@fffc0000 {
+		device_type = "memory";
+		reg = <0x0 0xfffc0000 0x0 0x40000>;
+	};
+};

configs/xilinx_versal_mini_qspi_defconfig

@@ -0,0 +1,75 @@
+CONFIG_ARM=y
+CONFIG_SYS_CONFIG_NAME="xilinx_versal_mini_qspi"
+CONFIG_COUNTER_FREQUENCY=100000000
+CONFIG_ARCH_VERSAL=y
+CONFIG_TEXT_BASE=0xFFFC0000
+CONFIG_SYS_MALLOC_LEN=0x2000
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_ENV_SIZE=0x80
+CONFIG_DEFAULT_DEVICE_TREE="versal-mini-qspi-single"
+CONFIG_SYS_PROMPT="Versal> "
+CONFIG_SYS_MEM_RSVD_FOR_MMU=y
+CONFIG_VERSAL_NO_DDR=y
+# CONFIG_PSCI_RESET is not set
+CONFIG_SYS_LOAD_ADDR=0x8000000
+CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
+CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0xFFFE0000
+# CONFIG_EXPERT is not set
+# CONFIG_ARCH_FIXUP_FDT_MEMORY is not set
+# CONFIG_AUTOBOOT is not set
+CONFIG_LOGLEVEL=0
+CONFIG_SYS_CONSOLE_INFO_QUIET=y
+# CONFIG_DISPLAY_CPUINFO is not set
+CONFIG_BOARD_EARLY_INIT_R=y
+# CONFIG_BOARD_LATE_INIT is not set
+# CONFIG_CMDLINE_EDITING is not set
+# CONFIG_AUTO_COMPLETE is not set
+# CONFIG_SYS_LONGHELP is not set
+# CONFIG_SYS_XTRACE is not set
+# CONFIG_CMD_BDI is not set
+# CONFIG_CMD_CONSOLE is not set
+# CONFIG_CMD_BOOTD is not set
+# CONFIG_CMD_BOOTM is not set
+# CONFIG_CMD_BOOTI is not set
+# CONFIG_CMD_ELF is not set
+# CONFIG_CMD_FDT is not set
+# CONFIG_CMD_GO is not set
+# CONFIG_CMD_RUN is not set
+# CONFIG_CMD_IMI is not set
+# CONFIG_CMD_XIMG is not set
+# CONFIG_CMD_EXPORTENV is not set
+# CONFIG_CMD_IMPORTENV is not set
+# CONFIG_CMD_EDITENV is not set
+# CONFIG_CMD_SAVEENV is not set
+# CONFIG_CMD_ENV_EXISTS is not set
+# CONFIG_CMD_CRC32 is not set
+# CONFIG_CMD_LOADB is not set
+# CONFIG_CMD_LOADS is not set
+# CONFIG_CMD_ECHO is not set
+# CONFIG_CMD_ITEST is not set
+# CONFIG_CMD_SOURCE is not set
+# CONFIG_CMD_SETEXPR is not set
+# CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG is not set
+# CONFIG_NET is not set
+# CONFIG_DM_WARN is not set
+# CONFIG_DM_DEVICE_REMOVE is not set
+# CONFIG_GPIO is not set
+# CONFIG_I2C is not set
+# CONFIG_INPUT is not set
+# CONFIG_MMC is not set
+CONFIG_DM_SPI_FLASH=y
+CONFIG_SF_DEFAULT_SPEED=30000000
+# CONFIG_SPI_FLASH_SMART_HWCAPS is not set
+# CONFIG_SPI_FLASH_UNLOCK_ALL is not set
+CONFIG_SPI_FLASH_ISSI=y
+CONFIG_SPI_FLASH_MACRONIX=y
+CONFIG_SPI_FLASH_SPANSION=y
+CONFIG_SPI_FLASH_STMICRO=y
+CONFIG_SPI_FLASH_WINBOND=y
+# CONFIG_SPI_FLASH_USE_4K_SECTORS is not set
+# CONFIG_POWER is not set
+CONFIG_ARM_DCC=y
+CONFIG_SPI=y
+CONFIG_DM_SPI=y
+CONFIG_ZYNQMP_GQSPI=y
+# CONFIG_LMB is not set