ARM: imx: stm32: Test whether ethernet node is enabled before reading MAC EEPROM on DHSOM
Check whether the ethernet interface is enabled at all before reading
MAC EEPROM. As a cost saving measure, it can happen that the MAC EEPROM
is not populated on SoMs which do not use ethernet.
Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
diff --git a/board/dhelectronics/common/dh_common.c b/board/dhelectronics/common/dh_common.c
index 67e3d59..34094a0 100644
--- a/board/dhelectronics/common/dh_common.c
+++ b/board/dhelectronics/common/dh_common.c
@@ -18,6 +18,19 @@
return eth_env_get_enetaddr(env, enetaddr);
}
+int dh_get_mac_is_enabled(const char *alias)
+{
+ ofnode node = ofnode_path(alias);
+
+ if (!ofnode_valid(node))
+ return -EINVAL;
+
+ if (!ofnode_is_enabled(node))
+ return -ENODEV;
+
+ return 0;
+}
+
int dh_get_mac_from_eeprom(unsigned char *enetaddr, const char *alias)
{
struct udevice *dev;
@@ -57,6 +70,9 @@
if (dh_mac_is_in_env("ethaddr"))
return 0;
+ if (dh_get_mac_is_enabled("ethernet0"))
+ return 0;
+
if (!dh_get_mac_from_eeprom(enetaddr, "eeprom0"))
return eth_env_set_enetaddr("ethaddr", enetaddr);
diff --git a/board/dhelectronics/common/dh_common.h b/board/dhelectronics/common/dh_common.h
index 2b24637..a2de5b1 100644
--- a/board/dhelectronics/common/dh_common.h
+++ b/board/dhelectronics/common/dh_common.h
@@ -12,6 +12,14 @@
bool dh_mac_is_in_env(const char *env);
/*
+ * dh_get_mac_is_enabled - Test if ethernet MAC is enabled in DT
+ *
+ * @alias: alias for ethernet MAC device tree node
+ * Return: 0 if OK, other value on error
+ */
+int dh_get_mac_is_enabled(const char *alias);
+
+/*
* dh_get_mac_from_eeprom - Get MAC address from eeprom and write it to enetaddr
*
* @enetaddr: buffer where address is to be stored
diff --git a/board/dhelectronics/dh_imx6/dh_imx6.c b/board/dhelectronics/dh_imx6/dh_imx6.c
index 07fc9b1..0676587 100644
--- a/board/dhelectronics/dh_imx6/dh_imx6.c
+++ b/board/dhelectronics/dh_imx6/dh_imx6.c
@@ -92,6 +92,9 @@
if (dh_mac_is_in_env("ethaddr"))
return 0;
+ if (dh_get_mac_is_enabled("ethernet0"))
+ return 0;
+
if (!dh_imx_get_mac_from_fuse(enetaddr))
goto out;
diff --git a/board/dhelectronics/dh_imx8mp/imx8mp_dhcom_pdk2.c b/board/dhelectronics/dh_imx8mp/imx8mp_dhcom_pdk2.c
index 5f12d78..ff2c0e8 100644
--- a/board/dhelectronics/dh_imx8mp/imx8mp_dhcom_pdk2.c
+++ b/board/dhelectronics/dh_imx8mp/imx8mp_dhcom_pdk2.c
@@ -47,6 +47,9 @@
if (dh_mac_is_in_env("ethaddr"))
return 0;
+ if (dh_get_mac_is_enabled("ethernet0"))
+ return 0;
+
if (!dh_imx_get_mac_from_fuse(enetaddr))
goto out;
@@ -66,6 +69,9 @@
if (dh_mac_is_in_env("eth1addr"))
return 0;
+ if (dh_get_mac_is_enabled("ethernet1"))
+ return 0;
+
if (!dh_imx_get_mac_from_fuse(enetaddr))
goto increment_out;
diff --git a/board/dhelectronics/dh_stm32mp1/board.c b/board/dhelectronics/dh_stm32mp1/board.c
index d1f662d..079dfff 100644
--- a/board/dhelectronics/dh_stm32mp1/board.c
+++ b/board/dhelectronics/dh_stm32mp1/board.c
@@ -128,6 +128,9 @@
if (dh_mac_is_in_env("ethaddr"))
return 0;
+ if (dh_get_mac_is_enabled("ethernet0"))
+ return 0;
+
if (!dh_get_mac_from_eeprom(enetaddr, "eeprom0"))
return eth_env_set_enetaddr("ethaddr", enetaddr);
@@ -141,6 +144,9 @@
if (dh_mac_is_in_env("eth1addr"))
return 0;
+ if (dh_get_mac_is_enabled("ethernet1"))
+ return 0;
+
if (dh_stm32_mac_is_in_ks8851())
return 0;