[U-Boot] [PATCH v2 4/4] net: fec: add fuse check

[Peng Fan]

Add fuse check for fec. If the fuse indicates the module
will not work in the SoC, let's fail the initialization.

Signed-off-by: Peng Fan <peng.fan at nxp.com>
Acked-by: Joe Hershberger <joe.hershberger at ni.com>
---

V2:
 Fix build for aarch64
 Add ACK tag

 drivers/net/fec_mxc.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c
index 96e3ad9a1a..afc82dd08a 100644
--- a/drivers/net/fec_mxc.c
+++ b/drivers/net/fec_mxc.c
@@ -1185,6 +1185,13 @@ int fecmxc_initialize_multi(bd_t *bd, int dev_id, int phy_id, uint32_t addr)
 #endif
 	int ret;
 
+	if (IS_ENABLED(CONFIG_IMX_MODULE_FUSE)) {
+		if (enet_fused((ulong)addr)) {
+			printf("SoC fuse indicates Ethernet at 0x%x is unavailable.\n", addr);
+			return -ENODEV;
+		}
+	}
+
 #ifdef CONFIG_FEC_MXC_MDIO_BASE
 	/*
 	 * The i.MX28 has two ethernet interfaces, but they are not equal.
@@ -1323,6 +1330,13 @@ static int fecmxc_probe(struct udevice *dev)
 	uint32_t start;
 	int ret;
 
+	if (IS_ENABLED(CONFIG_IMX_MODULE_FUSE)) {
+		if (enet_fused((ulong)priv->eth)) {
+			printf("SoC fuse indicates Ethernet at 0x%lx is unavailable.\n", (ulong)priv->eth);
+			return -ENODEV;
+		}
+	}
+
 	if (IS_ENABLED(CONFIG_IMX8)) {
 		ret = clk_get_by_name(dev, "ipg", &priv->ipg_clk);
 		if (ret < 0) {
-- 
2.16.4