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phy: add support for backplane kr mode 

Add generic support for backplane kr modes currently available:
10gbase-kr, 40gbase-kr4. Remove platform generic fixups
(armv8/layerscape and powerpc) for ethernet interfaces specified
in device tree as supported backplane modes.

Signed-off-by: Florinel Iordache <florinel.iordache@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
This commit is contained in:
Florinel Iordache 2020-03-16 15:35:59 +02:00 committed by Priyanka Jain
parent 316fc6ff76
commit 5d3bcdb12f
3 changed files with 41 additions and 0 deletions
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9
arch/arm/cpu/armv8/fsl-layerscape/fdt.c
View File

@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2014-2015 Freescale Semiconductor, Inc.
* Copyright 2020 NXP
*/
#include <common.h>
@ -31,6 +32,14 @@
int fdt_fixup_phy_connection(void *blob, int offset, phy_interface_t phyc)
{
const char *conn;
/* Do NOT apply fixup for backplane modes specified in DT */
if (phyc == PHY_INTERFACE_MODE_XGMII) {
conn = fdt_getprop(blob, offset, "phy-connection-type", NULL);
if (is_backplane_mode(conn))
return 0;
}
return fdt_setprop_string(blob, offset, "phy-connection-type",
phy_string_for_interface(phyc));
}

9
arch/powerpc/cpu/mpc8xxx/fdt.c
View File

@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2009-2014 Freescale Semiconductor, Inc.
* Copyright 2020 NXP
*
* This file is derived from arch/powerpc/cpu/mpc85xx/cpu.c and
* arch/powerpc/cpu/mpc86xx/cpu.c. Basically this file contains
@ -76,6 +77,14 @@ void ft_fixup_num_cores(void *blob) {
int fdt_fixup_phy_connection(void *blob, int offset, phy_interface_t phyc)
{
const char *conn;
/* Do NOT apply fixup for backplane modes specified in DT */
if (phyc == PHY_INTERFACE_MODE_XGMII) {
conn = fdt_getprop(blob, offset, "phy-connection-type", NULL);
if (is_backplane_mode(conn))
return 0;
}
return fdt_setprop_string(blob, offset, "phy-connection-type",
phy_string_for_interface(phyc));
}

23
include/phy_interface.h
View File

@ -1,6 +1,7 @@
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright 2011 Freescale Semiconductor, Inc.
* Copyright 2020 NXP
* Andy Fleming <afleming@gmail.com>
*
* This file pretty much stolen from Linux's mii.h/ethtool.h/phy.h
@ -67,6 +68,15 @@ static const char * const phy_interface_strings[] = {
[PHY_INTERFACE_MODE_NONE] = "",
};
/* Backplane modes:
* are considered a sub-type of phy_interface_t: XGMII
* and are specified in "phy-connection-type" with one of the following strings
*/
static const char * const backplane_mode_strings[] = {
"10gbase-kr",
"40gbase-kr4",
};
static inline const char *phy_string_for_interface(phy_interface_t i)
{
/* Default to unknown */
@ -76,4 +86,17 @@ static inline const char *phy_string_for_interface(phy_interface_t i)
return phy_interface_strings[i];
}
static inline bool is_backplane_mode(const char *phyconn)
{
int i;
if (!phyconn)
return false;
for (i = 0; i < ARRAY_SIZE(backplane_mode_strings); i++) {
if (!strcmp(phyconn, backplane_mode_strings[i]))
return true;
}
return false;
}
#endif /* _PHY_INTERFACE_H */