From db40c1aa1c100d8a9e33206575efd8b3678f31db Mon Sep 17 00:00:00 2001 From: Hannes Schmelzer Date: Thu, 23 Mar 2017 15:11:43 +0100 Subject: drivers/net/phy: add fixed-phy / fixed-link support This patch adds support for having a "fixed-link" to some other MAC (like some embedded switch-device). For this purpose we introduce a new phy-driver, called "Fixed PHY". Fixed PHY works only with CONFIG_DM_ETH enabled, since the fixed-link is described with a subnode below ethernet interface. Most ethernet drivers (unfortunately not all are following same scheme for searching/attaching phys) are calling "phy_connect(...)" for getting a phy-device. At this point we link in, we search here for a subnode called "fixed- link", once found we start phy_device_create(...) with the special phy- id PHY_FIXED_ID (0xa5a55a5a). During init the "Fixed PHY" driver has registered with this id and now gets probed, during probe we get all the details about fixed-link out of dts, later on the phy reports this values. Signed-off-by: Hannes Schmelzer Signed-off-by: Hannes Schmelzer Acked-by: Joe Hershberger Reviewed-by: Christian Gmeiner --- include/phy.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include') diff --git a/include/phy.h b/include/phy.h index 5477496e0e4..f5fdc04b6ed 100644 --- a/include/phy.h +++ b/include/phy.h @@ -15,6 +15,8 @@ #include #include +#define PHY_FIXED_ID 0xa5a55a5a + #define PHY_MAX_ADDR 32 #define PHY_FLAG_BROKEN_RESET (1 << 0) /* soft reset not supported */ @@ -267,6 +269,7 @@ int phy_ti_init(void); int phy_vitesse_init(void); int phy_xilinx_init(void); int phy_mscc_init(void); +int phy_fixed_init(void); int board_phy_config(struct phy_device *phydev); int get_phy_id(struct mii_dev *bus, int addr, int devad, u32 *phy_id); -- cgit v1.2.3