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cpsw: use phy-handle in FDT to find PHY address

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In r337703 DTS files were updated to Linux 4.18, including Linux commit
4d8b032d3c03f4e9788a18bbb51b10e6c9e8a56b which removed the `phy_id`
property from am335x-bone-common (as the property was deprecated).

Use `phy-handle` via fdt_get_phyaddr, keeping the existing code as a
fallback for old DTBs.

PR:		236624
Submitted by:	manu, Gerald Aryeetey <aryeeteygerald_rogers.com>
Reported by:	Gerald Aryeetey
Reviewed by:	manu
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D19814
This commit is contained in:
Ed Maste 2019-04-03 21:01:53 +00:00
parent 0a17b9e03e
commit 5eb264119e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=345855
2 changed files with 15 additions and 6 deletions
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18
sys/arm/ti/cpsw/if_cpsw.c
View File

@ -82,6 +82,8 @@ __FBSDID("$FreeBSD$");
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/fdt/fdt_common.h>
#ifdef CPSW_ETHERSWITCH
#include <dev/etherswitch/etherswitch.h>
@ -742,7 +744,7 @@ cpsw_get_fdt_data(struct cpsw_softc *sc, int port)
phandle_t child;
unsigned long mdio_child_addr;
/* Find any slave with phy_id */
/* Find any slave with phy-handle/phy_id */
phy = -1;
vlan = -1;
for (child = OF_child(sc->node); child != 0; child = OF_peer(child)) {
@ -756,11 +758,15 @@ cpsw_get_fdt_data(struct cpsw_softc *sc, int port)
if (mdio_child_addr != slave_mdio_addr[port])
continue;
len = OF_getproplen(child, "phy_id");
if (len / sizeof(pcell_t) == 2) {
/* Get phy address from fdt */
if (OF_getencprop(child, "phy_id", phy_id, len) > 0)
phy = phy_id[1];
if (fdt_get_phyaddr(child, NULL, &phy, NULL) != 0){
/* Users with old DTB will have phy_id instead */
phy = -1;
len = OF_getproplen(child, "phy_id");
if (len / sizeof(pcell_t) == 2) {
/* Get phy address from fdt */
if (OF_getencprop(child, "phy_id", phy_id, len) > 0)
phy = phy_id[1];
}
}
len = OF_getproplen(child, "dual_emac_res_vlan");

3
sys/dev/fdt/fdt_common.c
View File

@ -399,6 +399,9 @@ fdt_get_phyaddr(phandle_t node, device_t dev, int *phy_addr, void **phy_sc)
*phy_addr = phy_reg;
if (phy_sc == NULL)
return (0);
/*
* Search for softc used to communicate with phy.
*/