This adds basic USB support for port 0. The other port is not supported yet.
Tegra2 (SeaBoard) # usb start (Re)start USB... USB: Register 10011 NbrPorts 1 USB EHCI 1.00 scanning bus for devices... 5 USB Device(s) found scanning bus for storage devices... 1 Storage Device(s) found Tegra2 (SeaBoard) # ext2load usb 0:3 10000000 /boot/vmlinuz Loading file "/boot/vmlinuz" from usb device 0:3 (ROOT-A) 2932976 bytes read
Signed-off-by: Simon Glass sjg@chromium.org --- Changes in v2: - Add setting of pinmux for USB VBUS GPIO
Changes in v5: - Put pinmux setting into a board-specific function
board/nvidia/common/board.c | 12 ++++++++++++ board/nvidia/common/board.h | 6 ++++++ board/nvidia/seaboard/seaboard.c | 6 ++++++ 3 files changed, 24 insertions(+), 0 deletions(-)
diff --git a/board/nvidia/common/board.c b/board/nvidia/common/board.c index e8253a0..72d8630 100644 --- a/board/nvidia/common/board.c +++ b/board/nvidia/common/board.c @@ -33,6 +33,7 @@ #include <asm/arch/pinmux.h> #include <asm/arch/uart.h> #include <spi.h> +#include <asm/arch/usb.h> #include "board.h"
DECLARE_GLOBAL_DATA_PTR; @@ -50,6 +51,12 @@ int timer_init(void) return 0; }
+void __pin_mux_usb(void) +{ +} + +void pin_mux_usb(void) __attribute__((weak, alias("__pin_mux_usb"))); + /* * Routine: board_init * Description: Early hardware init. @@ -69,6 +76,11 @@ int board_init(void) /* boot param addr */ gd->bd->bi_boot_params = (NV_PA_SDRAM_BASE + 0x100);
+#ifdef CONFIG_USB_EHCI_TEGRA + pin_mux_usb(); + board_usb_init(gd->fdt_blob); +#endif + return 0; }
diff --git a/board/nvidia/common/board.h b/board/nvidia/common/board.h index a638af2..09fb158 100644 --- a/board/nvidia/common/board.h +++ b/board/nvidia/common/board.h @@ -27,4 +27,10 @@ void gpio_config_uart(void); void gpio_early_init_uart(void);
+/* + * Set up any pin muxing needed for USB (for now, since fdt doesn't support + * it). Boards can overwrite the default fucction which does nothing. + */ +void pin_mux_usb(void); + #endif /* BOARD_H */ diff --git a/board/nvidia/seaboard/seaboard.c b/board/nvidia/seaboard/seaboard.c index 9ab6825..94efb1e 100644 --- a/board/nvidia/seaboard/seaboard.c +++ b/board/nvidia/seaboard/seaboard.c @@ -90,3 +90,9 @@ int board_mmc_init(bd_t *bd) return 0; } #endif + +void pin_mux_usb(void) +{ + /* For USB's GPIO PD0. For now, since we have no pinmux in fdt */ + pinmux_tristate_disable(PINGRP_SLXK); +}