diff options
| author | Stefan Roese <sr@denx.de> | 2014-02-25 11:07:22 +0100 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2014-03-04 09:42:07 -0500 |
| commit | cc07294bc704694ae33db75b25ac557e5917a83f (patch) | |
| tree | 3cfb394522762122a581203fdd7a861c2018d8bd | |
| parent | b56b9a0884afab53f7c93cd3c90648437ca7e35e (diff) | |
arm: am335x: DXR2: Reset SMSC LAN9303 switch via GPIO upon bootup
Since the switch may be re-configured for VLAN usage in Linux (or any
other OS), lets reset the switch to its default register values upon
power-up. Otherwise network might not be available in U-Boot.
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Roger Meier <r.meier@siemens.com>
Cc: Lukas Stockmann <lukas.stockmann@siemens.com>
Cc: Tom Rini <trini@ti.com>
| -rw-r--r-- | board/siemens/dxr2/board.c | 7 | ||||
| -rw-r--r-- | board/siemens/dxr2/mux.c | 2 | ||||
| -rw-r--r-- | include/configs/dxr2.h | 1 |
3 files changed, 10 insertions, 0 deletions
diff --git a/board/siemens/dxr2/board.c b/board/siemens/dxr2/board.c index 9b8f538312..217237900e 100644 --- a/board/siemens/dxr2/board.c +++ b/board/siemens/dxr2/board.c @@ -232,6 +232,13 @@ int board_eth_init(bd_t *bis) factoryset_setenv(); + /* Reset SMSC LAN9303 switch for default configuration */ + gpio_request(GPIO_LAN9303_NRST, "nRST"); + gpio_direction_output(GPIO_LAN9303_NRST, 0); + /* assert active low reset for 200us */ + udelay(200); + gpio_set_value(GPIO_LAN9303_NRST, 1); + /* Set rgmii mode and enable rmii clock to be sourced from chip */ writel((RMII_MODE_ENABLE | RMII_CHIPCKL_ENABLE), &cdev->miisel); diff --git a/board/siemens/dxr2/mux.c b/board/siemens/dxr2/mux.c index 5c22999bb8..f2314b5d3e 100644 --- a/board/siemens/dxr2/mux.c +++ b/board/siemens/dxr2/mux.c @@ -221,6 +221,8 @@ static struct module_pin_mux gpios_pin_mux[] = { {OFFSET(ain0), MODE(7) | RXACTIVE | PULLUDDIS}, {OFFSET(vrefp), MODE(7) | RXACTIVE | PULLUDDIS}, {OFFSET(vrefn), MODE(7) | RXACTIVE | PULLUDDIS}, + /* nRST for SMSC LAN9303 switch - GPIO2_24 */ + {OFFSET(lcd_pclk), MODE(7) }, /* LAN9303 nRST */ {-1}, }; diff --git a/include/configs/dxr2.h b/include/configs/dxr2.h index e95d74c04c..75f7812e7d 100644 --- a/include/configs/dxr2.h +++ b/include/configs/dxr2.h @@ -26,6 +26,7 @@ #define BOARD_DFU_BUTTON_GPIO 27 #define BOARD_DFU_BUTTON_LED 64 +#define GPIO_LAN9303_NRST 88 /* GPIO2_24 = gpio88 */ #undef CONFIG_DOS_PARTITION #undef CONFIG_CMD_FAT |