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net: phy: micrel: Separate KSZ9000 drivers from KSZ8000 drivers

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The KS8721BL and KSZ9021 PHYs are software-incompatible, yet they
share the same ID. Drivers for bothe PHYs cannot safely coexist, so
the solution was to use #ifdefs to select between the two drivers.

As a result KSZ9031, which has a unique ID, is now caught in the
crossfire. Unless CONFIG_PHY_MICREL_KSZ9031 is defined, the KSZ9031
will not function properly, as some essential configuration code is
ifdef'd-out.

To prevent such situations, move the KSZ9000 drivers to a separate
file, and place them under a separate Kconfig option. While it is
possible to enable both KSZ8000 and KSZ9000 drivers at the same time,
the assumption is that it is highly unlikely for a system to contain
both a KSZ8000 and a KSZ9000 PHY, and that only one of the drivers
will be enabled at any given time.

Signed-off-by: Alexandru Gagniuc <alex.g@adaptrum.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
Alexandru Gagniuc 2017-07-07 11:36:57 -07:00 • committed by Joe Hershberger
parent cb543d30df
commit d397f7c45b
6 changed files with 408 additions and 8 deletions
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3
include/phy.h
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@ -266,7 +266,8 @@ int phy_davicom_init(void);
int phy_et1011c_init(void);
int phy_lxt_init(void);
int phy_marvell_init(void);
int phy_micrel_init(void);
int phy_micrel_ksz8xxx_init(void);
int phy_micrel_ksz90x1_init(void);
int phy_natsemi_init(void);
int phy_realtek_init(void);
int phy_smsc_init(void);