The switch HW reset results in a disconnection of the switch port daisy- chain for a few seconds. This is not desired in the normal field use case. So lets remove this switch reset from the normal bootup sequence and move it into a board specific command. This way it can be executed in the development environment when really needed.

Signed-off-by: Stefan Roese sr@denx.de Cc: Roger Meier r.meier@siemens.com Cc: Lukas Stockmann lukas.stockmann@siemens.com Cc: Tom Rini trini@ti.com --- board/siemens/dxr2/board.c | 26 +++++++++++++++++++------- 1 file changed, 19 insertions(+), 7 deletions(-)

diff --git a/board/siemens/dxr2/board.c b/board/siemens/dxr2/board.c index 2172379..38ac93d 100644 --- a/board/siemens/dxr2/board.c +++ b/board/siemens/dxr2/board.c @@ -232,13 +232,6 @@ 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);

@@ -249,6 +242,25 @@ int board_eth_init(bd_t *bis) n += rv; return n; } + +static int do_switch_reset(cmd_tbl_t *cmdtp, int flag, int argc, + char *const argv[]) +{ + /* 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); + + return 0; +}; + +U_BOOT_CMD( + switch_rst, CONFIG_SYS_MAXARGS, 1, do_switch_reset, + "Reset LAN9303 switch via its reset pin", + "" +); #endif /* #if defined(CONFIG_DRIVER_TI_CPSW) */ #endif /* #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) */