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 <s...@denx.de>
Cc: Roger Meier <r.me...@siemens.com>
Cc: Lukas Stockmann <lukas.stockm...@siemens.com>
Cc: Tom Rini <tr...@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)) */
--
1.8.5.5
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