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| author | Rafał Miłecki <rafal@milecki.pl> | 2021-03-12 13:41:08 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-03-13 04:06:37 +0300 |
| commit | a9349f08ec6c1251d41ef167d27a15cc39bc5b97 (patch) | |
| tree | 9d311a1da7f58735d27dbba426d3b87ee2f2ebb8 /drivers/net/dsa/bcm_sf2_regs.h | |
| parent | 01488a0ccd9abe15565bed50a45afcddbb0fe199 (diff) | |
| download | linux-a9349f08ec6c1251d41ef167d27a15cc39bc5b97.tar.xz | |
net: dsa: bcm_sf2: setup BCM4908 internal crossbar
On some SoCs (e.g. BCM4908, BCM631[345]8) SF2 has an integrated
crossbar. It allows connecting its selected external ports to internal
ports. It's used by vendors to handle custom Ethernet setups.
BCM4908 has following 3x2 crossbar. On Asus GT-AC5300 rgmii is used for
connecting external BCM53134S switch. GPHY4 is usually used for WAN
port. More fancy devices use SerDes for 2.5 Gbps Ethernet.
┌──────────┐
SerDes ─── 0 ─┤ │
│ 3x2 ├─ 0 ─── switch port 7
GPHY4 ─── 1 ─┤ │
│ crossbar ├─ 1 ─── runner (accelerator)
rgmii ─── 2 ─┤ │
└──────────┘
Use setup data based on DT info to configure BCM4908's switch port 7.
Right now only GPHY and rgmii variants are supported. Handling SerDes
can be implemented later.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/dsa/bcm_sf2_regs.h')
| -rw-r--r-- | drivers/net/dsa/bcm_sf2_regs.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/dsa/bcm_sf2_regs.h b/drivers/net/dsa/bcm_sf2_regs.h index 1d2d55c9f8aa..e297b09411f3 100644 --- a/drivers/net/dsa/bcm_sf2_regs.h +++ b/drivers/net/dsa/bcm_sf2_regs.h @@ -48,6 +48,13 @@ enum bcm_sf2_reg_offs { #define PHY_PHYAD_SHIFT 8 #define PHY_PHYAD_MASK 0x1F +/* Relative to REG_CROSSBAR */ +#define CROSSBAR_BCM4908_INT_P7 0 +#define CROSSBAR_BCM4908_INT_RUNNER 1 +#define CROSSBAR_BCM4908_EXT_SERDES 0 +#define CROSSBAR_BCM4908_EXT_GPHY4 1 +#define CROSSBAR_BCM4908_EXT_RGMII 2 + #define REG_RGMII_CNTRL_P(x) (REG_RGMII_0_CNTRL + (x)) /* Relative to REG_RGMII_CNTRL */ |