On 06.08.21 06:49, Tony Dinh wrote:
Add include header file include/fdt_support_net.h
Signed-off-by: Tony Dinh <mibo...@gmail.com>
---
include/fdt_support_net.h | 39 +++++++++++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)
create mode 100644 include/fdt_support_net.h
diff --git a/include/fdt_support_net.h b/include/fdt_support_net.h
new file mode 100644
index 0000000000..4fe447f803
--- /dev/null
+++ b/include/fdt_support_net.h
@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: GPL-2.0+
+ *
+ * Copyright (C) 2021 Tony Dinh <mibo...@gmail.com>
+ */
+
+#ifndef __fdt_support_net_h
+#define __fdt_support_net_h
+
+/**
+ * This file contains convenience functions for decoding network related
+ * information from FDTs. It is intended to be used by board-specific code
+ * within U-Boot.
+ */
+
+/*
+ * fdt_get_phy_addr - Return the Ethernet PHY address
+ *
+ * Convenience function to return the PHY address of an
+ * ethernet device given its full path as defined in the device tree
+ *
+ * @path full path to the network device node
+ * @return PHY address, or -1 if it does not exist
Please change from "-1" to some meaningful error return code.
Other than that:
Reviewed-by: Stefan Roese <s...@denx.de>
Thanks,
Stefan
+ *
+ * Usage examples:
+ *
+ * Get PHY address of eth0 for a Kirkwood board as defined in kirkwood.dtsi
+ * int phyaddr;
+ * char *eth0_path = "/ocp@f1000000/ethernet-controller@72000";
+ * phyaddr = fdt_get_phy_addr(eth0_path);
+ *
+ * Get PHY address of eth1 for a Armada 38x board as defined
+ * in armada-38x.dtsi
+ * int phyaddr;
+ * char *eth1_path = "/soc/ethernet@30000";
+ * phyaddr = fdt_get_phy_addr(eth1_path);
+ */
+int fdt_get_phy_addr(const char *path);
+
+#endif
Viele Grüße,
Stefan
--
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Phone: (+49)-8142-66989-51 Fax: (+49)-8142-66989-80 Email: s...@denx.de
