From 0f3d6b06ea06e5b0295e4a8222a25bc95a70c026 Mon Sep 17 00:00:00 2001 From: Nagabhushana Netagunte Date: Sat, 3 Sep 2011 22:21:04 -0400 Subject: da850: modifications for Logic PD Rev.3 AM18xx EVM AHCLKR/UART1_RTS/GP0[11] pin needs to be configured for NOR to work on Rev.3 EVM. When GP0[11] is low, the SD0 interface will not work, but NOR flash will. Signed-off-by: Rajashekhara, Sudhakar Signed-off-by: Nagabhushana Netagunte Signed-off-by: Sandeep Paulraj --- board/davinci/da8xxevm/da850evm.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'board') diff --git a/board/davinci/da8xxevm/da850evm.c b/board/davinci/da8xxevm/da850evm.c index 8c3d64e..2f950e7 100644 --- a/board/davinci/da8xxevm/da850evm.c +++ b/board/davinci/da8xxevm/da850evm.c @@ -109,6 +109,8 @@ const struct pinmux_config nand_pins[] = { #elif defined(CONFIG_USE_NOR) /* NOR pin muxer settings */ const struct pinmux_config nor_pins[] = { + /* GP0[11] is required for NOR to work on Rev 3 EVMs */ + { pinmux(0), 8, 4 }, /* GP0[11] */ { pinmux(5), 1, 6 }, { pinmux(6), 1, 6 }, { pinmux(7), 1, 0 }, @@ -278,6 +280,7 @@ u32 get_board_rev(void) int board_init(void) { + u32 val; #ifndef CONFIG_USE_IRQ irq_init(); #endif @@ -325,6 +328,16 @@ int board_init(void) if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes))) return 1; +#ifdef CONFIG_USE_NOR + /* Set the GPIO direction as output */ + clrbits_be32((u32 *)GPIO_BANK0_REG_DIR_ADDR, (0x01 << 11)); + + /* Set the output as low */ + val = readl(GPIO_BANK0_REG_SET_ADDR); + val |= (0x01 << 11); + writel(val, GPIO_BANK0_REG_CLR_ADDR); +#endif + #ifdef CONFIG_DRIVER_TI_EMAC if (davinci_configure_pin_mux(emac_pins, ARRAY_SIZE(emac_pins)) != 0) return 1; -- cgit v1.1