diff options
| author | Egil Hjelmeland <privat@egil-hjelmeland.no> | 2017-07-30 19:58:54 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-30 19:23:29 -0700 |
| commit | ab78acb152e3f0ded13a13fd27df46448d34a4b7 (patch) | |
| tree | c667fd14e68af053ab56517cad99a9fed7204187 /drivers/net/dsa/lan9303-core.c | |
| parent | d329ac88eb217fef1516a1dcfda27b7f5a8eb07b (diff) | |
| download | linux-ab78acb152e3f0ded13a13fd27df46448d34a4b7.tar.gz linux-ab78acb152e3f0ded13a13fd27df46448d34a4b7.tar.bz2 linux-ab78acb152e3f0ded13a13fd27df46448d34a4b7.zip | |
net: dsa: lan9303: Multiply by 4 to get MDIO register
lan9303_mdio_write()/_read() must multiply register number by 4 to get
offset.
Added some commments to the register definitions.
Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/dsa/lan9303-core.c')
| -rw-r--r-- | drivers/net/dsa/lan9303-core.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c index 9d0ab77edb4a..96ebeb9bd59a 100644 --- a/drivers/net/dsa/lan9303-core.c +++ b/drivers/net/dsa/lan9303-core.c @@ -20,6 +20,9 @@ #include "lan9303.h" +/* 13.2 System Control and Status Registers + * Multiply register number by 4 to get address offset. + */ #define LAN9303_CHIP_REV 0x14 # define LAN9303_CHIP_ID 0x9303 #define LAN9303_IRQ_CFG 0x15 @@ -53,6 +56,9 @@ #define LAN9303_VIRT_PHY_BASE 0x70 #define LAN9303_VIRT_SPECIAL_CTRL 0x77 +/*13.4 Switch Fabric Control and Status Registers + * Accessed indirectly via SWITCH_CSR_CMD, SWITCH_CSR_DATA. + */ #define LAN9303_SW_DEV_ID 0x0000 #define LAN9303_SW_RESET 0x0001 #define LAN9303_SW_RESET_RESET BIT(0) |