board: stm32f746-disco: Get MII/RMII phy_mode from DT
This is needed to make ethernet work on stm32f746-eval which
uses MII mode.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/board/st/stm32f746-disco/stm32f746-disco.c b/board/st/stm32f746-disco/stm32f746-disco.c
index 7c9b1ad..e89ed21 100644
--- a/board/st/stm32f746-disco/stm32f746-disco.c
+++ b/board/st/stm32f746-disco/stm32f746-disco.c
@@ -7,6 +7,8 @@
#include <common.h>
#include <dm.h>
#include <lcd.h>
+#include <miiphy.h>
+#include <phy_interface.h>
#include <ram.h>
#include <spl.h>
#include <splash.h>
@@ -123,8 +125,25 @@
gd->bd->bi_boot_params = gd->bd->bi_dram[0].start + 0x100;
#ifdef CONFIG_ETH_DESIGNWARE
- /* Set >RMII mode */
- STM32_SYSCFG->pmc |= SYSCFG_PMC_MII_RMII_SEL;
+ const char *phy_mode;
+ int node;
+
+ node = fdt_node_offset_by_compatible(gd->fdt_blob, 0, "st,stm32-dwmac");
+ if (node < 0)
+ return -1;
+
+ phy_mode = fdt_getprop(gd->fdt_blob, node, "phy-mode", NULL);
+
+ switch (phy_get_interface_by_name(phy_mode)) {
+ case PHY_INTERFACE_MODE_RMII:
+ STM32_SYSCFG->pmc |= SYSCFG_PMC_MII_RMII_SEL;
+ break;
+ case PHY_INTERFACE_MODE_MII:
+ STM32_SYSCFG->pmc &= ~SYSCFG_PMC_MII_RMII_SEL;
+ break;
+ default:
+ printf("PHY interface %s not supported !\n", phy_mode);
+ }
#endif
#if defined(CONFIG_CMD_BMP)