diff options
Diffstat (limited to 'board/davedenx/qong/qong.c')
| -rw-r--r-- | board/davedenx/qong/qong.c | 93 |
1 files changed, 72 insertions, 21 deletions
diff --git a/board/davedenx/qong/qong.c b/board/davedenx/qong/qong.c index b80115003..e73d26b8f 100644 --- a/board/davedenx/qong/qong.c +++ b/board/davedenx/qong/qong.c @@ -25,6 +25,7 @@ #include <netdev.h> #include <asm/arch/mx31.h> #include <asm/arch/mx31-regs.h> +#include <nand.h> #include "qong_fpga.h" DECLARE_GLOBAL_DATA_PTR; @@ -38,6 +39,15 @@ int dram_init (void) return 0; } +static void qong_fpga_reset(void) +{ + mx31_gpio_set(QONG_FPGA_RST_PIN, 0); + udelay(30); + mx31_gpio_set(QONG_FPGA_RST_PIN, 1); + + udelay(300); +} + int board_init (void) { /* Chip selects */ @@ -101,6 +111,15 @@ int board_init (void) mx31_gpio_mux(IOMUX_MODE(0x91, MUX_CTL_OUT_FUNC | MUX_CTL_IN_GPIO)); mx31_gpio_mux(IOMUX_MODE(0x92, MUX_CTL_GPIO)); mx31_gpio_mux(IOMUX_MODE(0x93, MUX_CTL_GPIO)); + + /* FPGA reset Pin */ + /* rstn = 0 */ + mx31_gpio_set(QONG_FPGA_RST_PIN, 0); + mx31_gpio_direction(QONG_FPGA_RST_PIN, MX31_GPIO_DIRECTION_OUT); + + /* set interrupt pin as input */ + mx31_gpio_direction(QONG_FPGA_IRQ_PIN, MX31_GPIO_DIRECTION_IN); + #endif /* setup pins for UART1 */ @@ -127,32 +146,11 @@ int misc_init_r (void) #ifdef CONFIG_QONG_FPGA u32 tmp; - /* FPGA reset */ - /* rstn = 0 */ - tmp = __REG(GPIO2_BASE + GPIO_DR); - tmp &= (~(1 << QONG_FPGA_RST_PIN)); - __REG(GPIO2_BASE + GPIO_DR) = tmp; - /* set the GPIO as output */ - tmp = __REG(GPIO2_BASE + GPIO_GDIR); - tmp |= (1 << QONG_FPGA_RST_PIN); - __REG(GPIO2_BASE + GPIO_GDIR) = tmp; - /* wait */ - udelay(30); - /* rstn = 1 */ - tmp = __REG(GPIO2_BASE + GPIO_DR); - tmp |= (1 << QONG_FPGA_RST_PIN); - __REG(GPIO2_BASE + GPIO_DR) = tmp; - /* set interrupt pin as input */ - __REG(GPIO2_BASE + GPIO_GDIR) = tmp | (1 << QONG_FPGA_IRQ_PIN); - /* wait while the FPGA starts */ - udelay(300); - tmp = *(volatile u32*)QONG_FPGA_CTRL_VERSION; printf("FPGA: "); printf("version register = %u.%u.%u\n", (tmp & 0xF000) >> 12, (tmp & 0x0F00) >> 8, tmp & 0x00FF); #endif - return 0; } @@ -164,3 +162,56 @@ int board_eth_init(bd_t *bis) return 0; #endif } + +#if defined(CONFIG_QONG_FPGA) && defined(CONFIG_NAND_PLAT) +static void board_nand_setup(void) +{ + + /* CS3: NAND 8-bit */ + __REG(CSCR_U(3)) = 0x00004f00; + __REG(CSCR_L(3)) = 0x20013b31; + __REG(CSCR_A(3)) = 0x00020800; + __REG(IOMUXC_GPR) |= 1 << 13; + + mx31_gpio_mux(IOMUX_MODE(MUX_CTL_NFC_WP, MUX_CTL_IN_GPIO)); + mx31_gpio_mux(IOMUX_MODE(MUX_CTL_NFC_CE, MUX_CTL_IN_GPIO)); + mx31_gpio_mux(IOMUX_MODE(MUX_CTL_NFC_RB, MUX_CTL_IN_GPIO)); + + /* Make sure to reset the fpga else you cannot access NAND */ + qong_fpga_reset(); + + /* Enable NAND flash */ + mx31_gpio_set(15, 1); + mx31_gpio_set(14, 1); + mx31_gpio_direction(15, MX31_GPIO_DIRECTION_OUT); + mx31_gpio_direction(16, MX31_GPIO_DIRECTION_IN); + mx31_gpio_direction(14, MX31_GPIO_DIRECTION_IN); + mx31_gpio_set(15, 0); + +} + +int qong_nand_rdy(void *chip) +{ + udelay(1); + return mx31_gpio_get(16); +} + +void qong_nand_select_chip(struct mtd_info *mtd, int chip) +{ + if (chip >= 0) + mx31_gpio_set(15, 0); + else + mx31_gpio_set(15, 1); + +} + +void qong_nand_plat_init(void *chip) +{ + struct nand_chip *nand = (struct nand_chip *)chip; + nand->chip_delay = 20; + nand->select_chip = qong_nand_select_chip; + nand->options &= ~NAND_BUSWIDTH_16; + board_nand_setup(); +} + +#endif |