From 0783b16509a1e6d9821084ec64f5be1cc091c7f9 Mon Sep 17 00:00:00 2001 From: Vladimir Oltean Date: Wed, 29 Sep 2021 18:04:38 +0300 Subject: net: dsa: allow drivers to get the port OF node In the current DSA switch driver API, only the udevice of the switch (belonging to UCLASS_DSA) is exposed, as well as an "int port" argument. So drivers do not have access to the udevice of individual ports (belonging to UCLASS_ETH), one of the reasons being that not all ports have an associated UCLASS_ETH udevice. However, all DSA ports have an OF node, and in some cases the driver needs a handle to it, for all ports including the CPU port. Example: the following Linux per-port device tree property: managed = "in-band-status"; states whether a port should operate with clause 37 in-band autoneg enabled or not. This patch exposes a function which can be called by individual drivers as needed. Signed-off-by: Vladimir Oltean Reviewed-by: Ramon Fried --- include/net/dsa.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/net/dsa.h') diff --git a/include/net/dsa.h b/include/net/dsa.h index a339a497303..1b1068cd88c 100644 --- a/include/net/dsa.h +++ b/include/net/dsa.h @@ -6,6 +6,7 @@ #ifndef __DSA_H__ #define __DSA_H__ +#include #include #include @@ -145,6 +146,17 @@ int dsa_set_tagging(struct udevice *dev, ushort headroom, ushort tailroom); */ struct udevice *dsa_get_master(struct udevice *dev); +/** + * dsa_port_get_ofnode() - Return a reference to the given port's OF node + * + * Can be called at driver probe time or later. + * + * @dev: DSA switch udevice pointer + * @port: Port index + * @return OF node reference if OK, NULL on error + */ +ofnode dsa_port_get_ofnode(struct udevice *dev, int port); + /** * dsa_port_get_pdata() - Helper that returns the platdata of an active * (non-CPU) DSA port device. -- cgit v1.2.3