diff mbox series

[U-Boot,V2,4/4] net: fec: add fuse check

Message ID 20190723073445.23864-4-peng.fan@nxp.com
State Superseded
Delegated to: Stefano Babic
Headers show
Series [U-Boot,V2,1/4] imx: add module fuse support | expand

Commit Message

Peng Fan July 23, 2019, 7:19 a.m. UTC 
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>
---

V2:
 Update commit and debug info

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

Comments

Joe Hershberger July 23, 2019, 7:36 a.m. UTC | #1 
On Tue, Jul 23, 2019 at 2:21 AM Peng Fan <peng.fan@nxp.com> wrote:
>
> 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 mbox series

Patch

diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c
index 96e3ad9a1a..c666874b98 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(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.
@@ -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((u32)priv->eth)) {
+			printf("SoC fuse indicates Ethernet@0x%x is unavailable.\n", (u32)priv->eth);
+			return -ENODEV;
+		}
+	}
+
 	if (IS_ENABLED(CONFIG_IMX8)) {
 		ret = clk_get_by_name(dev, "ipg", &priv->ipg_clk);
 		if (ret < 0) {