board: presidio: Add Parallel NAND support

Set environment for Nand flash (U-boot 2020.04):
- add nand flash in the device tree
- add new default configuration file for G3 using parallel Nand
- set nand parameters in presidio_asic.h

Signed-off-by: Kate Liu <kate.liu@cortina-access.com>
Signed-off-by: Alex Nemirovsky <alex.nemirovsky@cortina-access.com>
CC: Tom Rini <trini@konsulko.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

MAINTAINERS

@@ -200,6 +200,7 @@ F:	drivers/i2c/i2c-cortina.c
 F:	drivers/i2c/i2c-cortina.h
 F:	drivers/mtd/nand/raw/cortina_nand.c
 F:	drivers/mtd/nand/raw/cortina_nand.h
+F:	configs/cortina_presidio-asic-pnand_defconfig
 
 ARM/CZ.NIC TURRIS MOX SUPPORT
 M:	Marek Behun <marek.behun@nic.cz>

arch/arm/dts/ca-presidio-engboard.dts

@@ -52,6 +52,20 @@
 		clock-frequency = <400000>;
 	};
 
+	nand: nand-controller@f4324000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "cortina,ca-nand";
+		reg = <0 0xf4324000 0x3b0>, /* NAND controller */
+		      <0 0xf7001000 0xb4>, /* DMA_GLOBAL */
+		      <0 0xf7001a00 0x80>; /* DMA channel0 for FLASH */
+		status = "okay";
+		nand-ecc-mode = "hw";
+		nand-ecc-strength = <16>;
+		nand-ecc-step-size = <1024>;    /* Must be 1024 */
+		nand_flash_base_addr = <0xe0000000>;
+	};
+
 	sflash: sflash-controller@f4324000 {
 		#address-cells = <2>;
 		#size-cells = <1>;

configs/cortina_presidio-asic-pnand_defconfig

@@ -0,0 +1,33 @@
+CONFIG_ARM=y
+# CONFIG_SYS_ARCH_TIMER is not set
+CONFIG_TARGET_PRESIDIO_ASIC=y
+CONFIG_SYS_TEXT_BASE=0x04000000
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_ENV_SIZE=0x20000
+CONFIG_DM_GPIO=y
+CONFIG_IDENT_STRING="Presidio-SoC"
+CONFIG_DEFAULT_DEVICE_TREE="ca-presidio-engboard"
+CONFIG_SHOW_BOOT_PROGRESS=y
+CONFIG_BOOTDELAY=3
+CONFIG_USE_BOOTARGS=y
+CONFIG_BOOTARGS="earlycon=serial,0xf4329148 console=ttyS0,115200 root=/dev/ram0"
+CONFIG_BOARD_EARLY_INIT_R=y
+CONFIG_SYS_PROMPT="G3#"
+CONFIG_CMD_MTD=y
+CONFIG_CMD_WDT=y
+CONFIG_CMD_CACHE=y
+CONFIG_CMD_TIMER=y
+CONFIG_CMD_SMC=y
+CONFIG_OF_CONTROL=y
+CONFIG_OF_LIVE=y
+# CONFIG_NET is not set
+CONFIG_DM=y
+CONFIG_CORTINA_GPIO=y
+# CONFIG_MMC is not set
+CONFIG_MTD=y
+CONFIG_MTD_RAW_NAND=y
+CONFIG_CORTINA_NAND=y
+CONFIG_DM_SERIAL=y
+CONFIG_CORTINA_UART=y
+CONFIG_WDT=y
+CONFIG_WDT_CORTINA=y

include/configs/presidio_asic.h

@@ -67,4 +67,13 @@
 #define CONFIG_SYS_MAXARGS		64
 #define CONFIG_EXTRA_ENV_SETTINGS	"silent=y\0"
 
+/* nand driver parameters */
+#ifdef CONFIG_TARGET_PRESIDIO_ASIC
+	#define CONFIG_SYS_NAND_ONFI_DETECTION
+	#define CONFIG_SYS_MAX_NAND_DEVICE      1
+	#define CONFIG_SYS_NAND_MAX_CHIPS       1
+	#define CONFIG_SYS_NAND_BASE            CONFIG_SYS_FLASH_BASE
+	#define CONFIG_SYS_NAND_BASE_LIST       { CONFIG_SYS_NAND_BASE }
+#endif
+
 #endif /* __PRESIDIO_ASIC_H */