net: phy: micrel: Allow KSZ8xxx and KSZ90x1 to be used together

Commit d397f7c45b0b ("net: phy: micrel: Separate KSZ9000 drivers from
KSZ8000 drivers") separated the KSZ8xxx and KSZ90x1 drivers and warns
that you shouldn't select both of them due to a device ID clash between
the KSZ9021 and the KS8721, asserting that "it is highly unlikely for a
system to contain both a KSZ8000 and a KSZ9000 PHY". Unfortunately
boards like the SAMA5D3xEK do contain both types of PHY, but fortunately
the Linux Micrel PHY driver provides a solution by using different PHY
ID and mask values to distinguish these chips.

This commit contains the following changes:

- The PHY ID and mask values for the KSZ9021 and the KS8721 now match
those used by the Linux driver.
- The warnings about not enabling both drivers have been removed.
- The description for PHY_MICREL_KSZ8XXX has been corrected (these are
10/100 PHYs, not GbE PHYs).
- PHY_MICREL_KSZ9021 and PHY_MICREL_KSZ9031 no longer select PHY_GIGE
since this is selected by PHY_MICREL_KSZ90X1.
- All of the relevant defconfig files have been updated now that
PHY_MICREL_KSZ8XXX does not default to 'Y'.

Signed-off-by: James Byrne <james.byrne@origamienergy.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

36 files changed, 44 insertions, 18 deletions

diff --git a/configs/alt_defconfig b/configs/alt_defconfig
index a51c0d660a..a86ff906c8 100644
--- a/configs/alt_defconfig
+++ b/configs/alt_defconfig
@@ -70,6 +70,7 @@ CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_SPANSION=y
 CONFIG_SPI_FLASH_MTD=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_DM_ETH=y
 CONFIG_SH_ETHER=y
 CONFIG_PCI=y
diff --git a/configs/aristainetos_defconfig b/configs/aristainetos_defconfig
index 0e6317400b..44b30e33e8 100644
--- a/configs/aristainetos_defconfig
+++ b/configs/aristainetos_defconfig
@@ -47,6 +47,7 @@ CONFIG_MTD_UBI_FASTMAP=y
 CONFIG_MTD_UBI_FASTMAP_AUTOCONVERT=1
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_MII=y
 CONFIG_SPI=y
 CONFIG_MXC_SPI=y
diff --git a/configs/bk4r1_defconfig b/configs/bk4r1_defconfig
index 3dac2fd7c9..98423f2391 100644
--- a/configs/bk4r1_defconfig
+++ b/configs/bk4r1_defconfig
@@ -67,6 +67,7 @@ CONFIG_SPI_FLASH_STMICRO=y
 CONFIG_SPI_FLASH_MTD=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_DM_ETH=y
 CONFIG_FEC_MXC=y
 CONFIG_MII=y
diff --git a/configs/colibri_imx6_defconfig b/configs/colibri_imx6_defconfig
index ba17ec0030..af74f35725 100644
--- a/configs/colibri_imx6_defconfig
+++ b/configs/colibri_imx6_defconfig
@@ -61,6 +61,7 @@ CONFIG_SUPPORT_EMMC_BOOT=y
 CONFIG_FSL_ESDHC=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_MII=y
 CONFIG_PINCTRL=y
 CONFIG_PINCTRL_IMX6=y
diff --git a/configs/colibri_imx7_defconfig b/configs/colibri_imx7_defconfig
index 58620ea68f..bfb84ecde8 100644
--- a/configs/colibri_imx7_defconfig
+++ b/configs/colibri_imx7_defconfig
@@ -57,6 +57,7 @@ CONFIG_NAND_MXS_DT=y
 CONFIG_MTD_UBI_FASTMAP=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_MII=y
 CONFIG_PINCTRL=y
 CONFIG_PINCTRL_IMX7=y
diff --git a/configs/colibri_imx7_emmc_defconfig b/configs/colibri_imx7_emmc_defconfig
index 0617b120a0..af3cf93946 100644
--- a/configs/colibri_imx7_emmc_defconfig
+++ b/configs/colibri_imx7_emmc_defconfig
@@ -49,6 +49,7 @@ CONFIG_SUPPORT_EMMC_BOOT=y
 CONFIG_FSL_ESDHC=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_MII=y
 CONFIG_PINCTRL=y
 CONFIG_PINCTRL_IMX7=y
diff --git a/configs/colibri_vf_defconfig b/configs/colibri_vf_defconfig
index d214a79d23..7334002df8 100644
--- a/configs/colibri_vf_defconfig
+++ b/configs/colibri_vf_defconfig
@@ -66,6 +66,7 @@ CONFIG_SYS_NAND_VF610_NFC_60_ECC_BYTES=y
 CONFIG_MTD_UBI_FASTMAP=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_DM_ETH=y
 CONFIG_FEC_MXC=y
 CONFIG_MII=y
diff --git a/configs/flea3_defconfig b/configs/flea3_defconfig
index 19c96768db..f6e8048b60 100644
--- a/configs/flea3_defconfig
+++ b/configs/flea3_defconfig
@@ -33,6 +33,7 @@ CONFIG_NAND=y
 CONFIG_NAND_MXC=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_MII=y
 CONFIG_SPI=y
 CONFIG_MXC_SPI=y
diff --git a/configs/gose_defconfig b/configs/gose_defconfig
index 428eab3921..f591bd845b 100644
--- a/configs/gose_defconfig
+++ b/configs/gose_defconfig
@@ -67,6 +67,7 @@ CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_SPANSION=y
 CONFIG_SPI_FLASH_MTD=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_DM_ETH=y
 CONFIG_SH_ETHER=y
 CONFIG_PCI=y
diff --git a/configs/imx6dl_mamoj_defconfig b/configs/imx6dl_mamoj_defconfig
index 09f33755f9..5ad49b38ec 100644
--- a/configs/imx6dl_mamoj_defconfig
+++ b/configs/imx6dl_mamoj_defconfig
@@ -36,6 +36,7 @@ CONFIG_SUPPORT_EMMC_BOOT=y
 CONFIG_FSL_ESDHC=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_FEC_MXC=y
 CONFIG_MII=y
 CONFIG_PINCTRL_IMX6=y
diff --git a/configs/imx6qdl_icore_rqs_defconfig b/configs/imx6qdl_icore_rqs_defconfig
index 45fddbeeea..83b926b699 100644
--- a/configs/imx6qdl_icore_rqs_defconfig
+++ b/configs/imx6qdl_icore_rqs_defconfig
@@ -45,6 +45,7 @@ CONFIG_SYS_I2C_MXC=y
 CONFIG_FSL_ESDHC=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_FEC_MXC=y
 CONFIG_MII=y
 CONFIG_PINCTRL=y
diff --git a/configs/k2g_evm_defconfig b/configs/k2g_evm_defconfig
index 0c554dfc7f..13cf9c9116 100644
--- a/configs/k2g_evm_defconfig
+++ b/configs/k2g_evm_defconfig
@@ -51,6 +51,7 @@ CONFIG_SPI_FLASH_STMICRO=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MARVELL=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_PHY_TI=y
 CONFIG_DM_ETH=y
 CONFIG_MII=y
diff --git a/configs/k2g_hs_evm_defconfig b/configs/k2g_hs_evm_defconfig
index 00138c0b66..e93fc001fa 100644
--- a/configs/k2g_hs_evm_defconfig
+++ b/configs/k2g_hs_evm_defconfig
@@ -45,6 +45,7 @@ CONFIG_SPI_FLASH_STMICRO=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MARVELL=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_DM_ETH=y
 CONFIG_MII=y
 CONFIG_DRIVER_TI_KEYSTONE_NET=y
diff --git a/configs/koelsch_defconfig b/configs/koelsch_defconfig
index 3484a17a44..23d11dfe0e 100644
--- a/configs/koelsch_defconfig
+++ b/configs/koelsch_defconfig
@@ -67,6 +67,7 @@ CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_SPANSION=y
 CONFIG_SPI_FLASH_MTD=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_DM_ETH=y
 CONFIG_SH_ETHER=y
 CONFIG_PCI=y
diff --git a/configs/lager_defconfig b/configs/lager_defconfig
index f158473121..c0560543a7 100644
--- a/configs/lager_defconfig
+++ b/configs/lager_defconfig
@@ -69,6 +69,7 @@ CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_SPANSION=y
 CONFIG_SPI_FLASH_MTD=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_DM_ETH=y
 CONFIG_SH_ETHER=y
 CONFIG_PCI=y
diff --git a/configs/m53menlo_defconfig b/configs/m53menlo_defconfig
index fe1a94e02f..e5f8c9e8dc 100644
--- a/configs/m53menlo_defconfig
+++ b/configs/m53menlo_defconfig
@@ -57,6 +57,7 @@ CONFIG_NAND=y
 CONFIG_NAND_MXC=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_RTC_M41T62=y
 CONFIG_USB=y
 CONFIG_USB_EHCI_MX5=y
diff --git a/configs/mx6ul_14x14_evk_defconfig b/configs/mx6ul_14x14_evk_defconfig
index 62563b93f9..2fc7119042 100644
--- a/configs/mx6ul_14x14_evk_defconfig
+++ b/configs/mx6ul_14x14_evk_defconfig
@@ -52,6 +52,7 @@ CONFIG_SF_DEFAULT_SPEED=40000000
 CONFIG_SPI_FLASH_STMICRO=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_DM_ETH=y
 CONFIG_MII=y
 CONFIG_PINCTRL=y
diff --git a/configs/mx6ul_9x9_evk_defconfig b/configs/mx6ul_9x9_evk_defconfig
index e8df625fb1..8816f6a4fd 100644
--- a/configs/mx6ul_9x9_evk_defconfig
+++ b/configs/mx6ul_9x9_evk_defconfig
@@ -52,6 +52,7 @@ CONFIG_SF_DEFAULT_SPEED=40000000
 CONFIG_SPI_FLASH_STMICRO=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_DM_ETH=y
 CONFIG_MII=y
 CONFIG_PINCTRL=y
diff --git a/configs/opos6uldev_defconfig b/configs/opos6uldev_defconfig
index 409bea88eb..badc4b0236 100644
--- a/configs/opos6uldev_defconfig
+++ b/configs/opos6uldev_defconfig
@@ -72,6 +72,7 @@ CONFIG_SUPPORT_EMMC_BOOT=y
 CONFIG_FSL_ESDHC=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_FEC_MXC=y
 CONFIG_MII=y
 CONFIG_PINCTRL=y
diff --git a/configs/pcm052_defconfig b/configs/pcm052_defconfig
index 87597f0c31..4002dbabe8 100644
--- a/configs/pcm052_defconfig
+++ b/configs/pcm052_defconfig
@@ -54,6 +54,7 @@ CONFIG_SPI_FLASH_STMICRO=y
 CONFIG_SPI_FLASH_MTD=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_DM_ETH=y
 CONFIG_FEC_MXC=y
 CONFIG_MII=y
diff --git a/configs/phycore_pcl063_defconfig b/configs/phycore_pcl063_defconfig
index 95f6d54076..a051a8da7a 100644
--- a/configs/phycore_pcl063_defconfig
+++ b/configs/phycore_pcl063_defconfig
@@ -42,6 +42,7 @@ CONFIG_NAND_MXS=y
 CONFIG_NAND_MXS_DT=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_FEC_MXC=y
 CONFIG_MII=y
 CONFIG_PINCTRL=y
diff --git a/configs/pico-hobbit-imx6ul_defconfig b/configs/pico-hobbit-imx6ul_defconfig
index 5481fffa0c..bb6a9e4335 100644
--- a/configs/pico-hobbit-imx6ul_defconfig
+++ b/configs/pico-hobbit-imx6ul_defconfig
@@ -49,6 +49,7 @@ CONFIG_SUPPORT_EMMC_BOOT=y
 CONFIG_FSL_ESDHC=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_MII=y
 CONFIG_PINCTRL=y
 CONFIG_PINCTRL_IMX6=y
diff --git a/configs/pico-imx6ul_defconfig b/configs/pico-imx6ul_defconfig
index af8267777a..3284680cf0 100644
--- a/configs/pico-imx6ul_defconfig
+++ b/configs/pico-imx6ul_defconfig
@@ -51,6 +51,7 @@ CONFIG_SUPPORT_EMMC_BOOT=y
 CONFIG_FSL_ESDHC=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_MII=y
 CONFIG_PINCTRL=y
 CONFIG_PINCTRL_IMX6=y
diff --git a/configs/pico-pi-imx6ul_defconfig b/configs/pico-pi-imx6ul_defconfig
index 295c822aa9..d52c09e605 100644
--- a/configs/pico-pi-imx6ul_defconfig
+++ b/configs/pico-pi-imx6ul_defconfig
@@ -49,6 +49,7 @@ CONFIG_SUPPORT_EMMC_BOOT=y
 CONFIG_FSL_ESDHC=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_MII=y
 CONFIG_PINCTRL=y
 CONFIG_PINCTRL_IMX6=y
diff --git a/configs/porter_defconfig b/configs/porter_defconfig
index 4bfdc55696..c42754b284 100644
--- a/configs/porter_defconfig
+++ b/configs/porter_defconfig
@@ -68,6 +68,7 @@ CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_SPANSION=y
 CONFIG_SPI_FLASH_MTD=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_DM_ETH=y
 CONFIG_SH_ETHER=y
 CONFIG_PCI=y
diff --git a/configs/silk_defconfig b/configs/silk_defconfig
index 70500cf081..e38f634371 100644
--- a/configs/silk_defconfig
+++ b/configs/silk_defconfig
@@ -70,6 +70,7 @@ CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_SPANSION=y
 CONFIG_SPI_FLASH_MTD=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_DM_ETH=y
 CONFIG_SH_ETHER=y
 CONFIG_PCI=y
diff --git a/configs/stout_defconfig b/configs/stout_defconfig
index 1db3f7669a..d6d9e690a0 100644
--- a/configs/stout_defconfig
+++ b/configs/stout_defconfig
@@ -68,6 +68,7 @@ CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_SPANSION=y
 CONFIG_SPI_FLASH_MTD=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_DM_ETH=y
 CONFIG_SH_ETHER=y
 CONFIG_PCI=y
diff --git a/configs/stv0991_defconfig b/configs/stv0991_defconfig
index 78810529c8..834a75fde3 100644
--- a/configs/stv0991_defconfig
+++ b/configs/stv0991_defconfig
@@ -26,6 +26,7 @@ CONFIG_ENV_IS_IN_SPI_FLASH=y
 CONFIG_SPI_FLASH_STMICRO=y
 CONFIG_SPI_FLASH_WINBOND=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_ETH_DESIGNWARE=y
 CONFIG_MII=y
 CONFIG_CADENCE_QSPI=y
diff --git a/configs/udoo_neo_defconfig b/configs/udoo_neo_defconfig
index 603d36794d..e8df11db66 100644
--- a/configs/udoo_neo_defconfig
+++ b/configs/udoo_neo_defconfig
@@ -31,5 +31,6 @@ CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
 CONFIG_FSL_ESDHC=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_MII=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/vf610twr_defconfig b/configs/vf610twr_defconfig
index 24f8243300..dc67ddc0bf 100644
--- a/configs/vf610twr_defconfig
+++ b/configs/vf610twr_defconfig
@@ -37,6 +37,7 @@ CONFIG_NAND_VF610_NFC=y
 CONFIG_SYS_NAND_BUSWIDTH_16BIT=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_MII=y
 CONFIG_DM_SERIAL=y
 CONFIG_FSL_LPUART=y
diff --git a/configs/vf610twr_nand_defconfig b/configs/vf610twr_nand_defconfig
index 4dc8b82e6a..7fcb630ff1 100644
--- a/configs/vf610twr_nand_defconfig
+++ b/configs/vf610twr_nand_defconfig
@@ -37,6 +37,7 @@ CONFIG_NAND_VF610_NFC=y
 CONFIG_SYS_NAND_BUSWIDTH_16BIT=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_MII=y
 CONFIG_DM_SERIAL=y
 CONFIG_FSL_LPUART=y
diff --git a/configs/woodburn_defconfig b/configs/woodburn_defconfig
index a5cc579ce5..bb74542b67 100644
--- a/configs/woodburn_defconfig
+++ b/configs/woodburn_defconfig
@@ -38,6 +38,7 @@ CONFIG_NAND=y
 CONFIG_NAND_MXC=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_MII=y
 CONFIG_SPI=y
 CONFIG_MXC_SPI=y
diff --git a/configs/woodburn_sd_defconfig b/configs/woodburn_sd_defconfig
index 087c83ad1c..4976a70194 100644
--- a/configs/woodburn_sd_defconfig
+++ b/configs/woodburn_sd_defconfig
@@ -50,6 +50,7 @@ CONFIG_NAND=y
 CONFIG_NAND_MXC=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
 CONFIG_MII=y
 CONFIG_SPI=y
 CONFIG_MXC_SPI=y
diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index 631b52b1cf..2a3da068c9 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -119,21 +119,19 @@ config PHY_MICREL
 	bool "Micrel Ethernet PHYs support"
 	help
 	  Enable support for the GbE PHYs manufactured by Micrel (now
-	  a part of Microchip). This includes drivers for the KSZ804,
-	  KSZ8031, KSZ8051, KSZ8081, KSZ8895, KSZ886x, KSZ8721
-	  either/or KSZ9021 (see the "Micrel KSZ9021 family support"
-	  config option for details), and KSZ9031 (if configured).
+	  a part of Microchip). This includes drivers for the KSZ804, KSZ8031,
+	  KSZ8051, KSZ8081, KSZ8895, KSZ886x and KSZ8721 (if "Micrel KSZ8xxx
+	  family support" is selected) and the KSZ9021 and KSZ9031 (if "Micrel
+	  KSZ90x1 family support" is selected).
 
 if PHY_MICREL
 
 config PHY_MICREL_KSZ9021
 	bool
-	select PHY_GIGE
 	select PHY_MICREL_KSZ90X1
 
 config PHY_MICREL_KSZ9031
 	bool
-	select PHY_GIGE
 	select PHY_MICREL_KSZ90X1
 
 config PHY_MICREL_KSZ90X1
@@ -146,20 +144,13 @@ config PHY_MICREL_KSZ90X1
 	  delays configured in the device tree will be applied to the
 	  PHY during initialization.
 
-	  This should not be enabled at the same time with PHY_MICREL_KSZ8XXX
-	  as the KSZ9021 and KS8721 share the same ID.
-
 config PHY_MICREL_KSZ8XXX
 	bool "Micrel KSZ8xxx family support"
-	default y if !PHY_MICREL_KSZ90X1
 	help
-	  Enable support for the 8000 series GbE PHYs manufactured by Micrel
+	  Enable support for the 8000 series 10/100 PHYs manufactured by Micrel
 	  (now a part of Microchip). This includes drivers for the KSZ804,
 	  KSZ8031, KSZ8051, KSZ8081, KSZ8895, KSZ886x, and KSZ8721.
 
-	  This should not be enabled at the same time with PHY_MICREL_KSZ90X1
-	  as the KSZ9021 and KS8721 share the same ID.
-
 endif # PHY_MICREL
 
 config PHY_MSCC
diff --git a/drivers/net/phy/micrel_ksz8xxx.c b/drivers/net/phy/micrel_ksz8xxx.c
index 3411150ab9..daa57ce33c 100644
--- a/drivers/net/phy/micrel_ksz8xxx.c
+++ b/drivers/net/phy/micrel_ksz8xxx.c
@@ -147,11 +147,13 @@ static struct phy_driver ksz8895_driver = {
 	.shutdown = &genphy_shutdown,
 };
 
-/* Micrel used the exact same part number for the KSZ9021. */
+/* Micrel used the exact same model number for the KSZ9021,
+ * so the revision number is used to distinguish them.
+ */
 static struct phy_driver KS8721_driver = {
 	.name = "Micrel KS8721BL",
-	.uid = 0x221610,
-	.mask = 0xfffff0,
+	.uid = 0x221618,
+	.mask = 0xfffffc,
 	.features = PHY_BASIC_FEATURES,
 	.config = &genphy_config,
 	.startup = &genphy_startup,
diff --git a/drivers/net/phy/micrel_ksz90x1.c b/drivers/net/phy/micrel_ksz90x1.c
index 8dec9f2367..f18e40a2fe 100644
--- a/drivers/net/phy/micrel_ksz90x1.c
+++ b/drivers/net/phy/micrel_ksz90x1.c
@@ -285,7 +285,7 @@ static int ksz9021_config(struct phy_device *phydev)
 static struct phy_driver ksz9021_driver = {
 	.name = "Micrel ksz9021",
 	.uid  = 0x221610,
-	.mask = 0xfffff0,
+	.mask = 0xfffffe,
 	.features = PHY_GBIT_FEATURES,
 	.config = &ksz9021_config,
 	.startup = &ksz90xx_startup,