From: Peng Fan <peng.fan@nxp.com>
Date: Fri, 1 May 2020 14:08:37 +0000 (+0800)
Subject: net: fec: add fuse check
X-Git-Tag: v2020.07-rc2~3^2~63
X-Git-Url: https://git.librecmc.org/?p=oweals%2Fu-boot.git;a=commitdiff_plain;h=3b26d527d355c00eb9a0b2b0c11536e4e62c10aa

net: fec: add fuse check

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@nxp.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
---

diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c
index 345d37be4e..3046305cfb 100644
--- a/drivers/net/fec_mxc.c
+++ b/drivers/net/fec_mxc.c
@@ -1204,6 +1204,13 @@ int fecmxc_initialize_multi(bd_t *bd, int dev_id, int phy_id, uint32_t addr)
 #endif
 	int ret;
 
+	if (CONFIG_IS_ENABLED(IMX_MODULE_FUSE)) {
+		if (enet_fused((ulong)addr)) {
+			printf("SoC fuse indicates Ethernet@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.
@@ -1342,6 +1349,13 @@ static int fecmxc_probe(struct udevice *dev)
 	uint32_t start;
 	int ret;
 
+	if (CONFIG_IS_ENABLED(IMX_MODULE_FUSE)) {
+		if (enet_fused((ulong)priv->eth)) {
+			printf("SoC fuse indicates Ethernet@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) {