diff options
| author | Pawel Dembicki <paweldembicki@gmail.com> | 2024-04-17 22:50:47 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-04-22 14:21:32 -0700 |
| commit | 6cc5280a08899e704336446c300af2ca80da9e5f (patch) | |
| tree | b9460b475bd90584aeddc1420b81ebe8a44d3935 /drivers/net/dsa/vitesse-vsc73xx.h | |
| parent | 12af94b2955fa74548001624839aadce505fe957 (diff) | |
net: dsa: vsc73xx: Add define for max num of ports
This patch introduces a new define: VSC73XX_MAX_NUM_PORTS, which can be
used in the future instead of a hardcoded value.
Currently, the only hardcoded value is vsc->ds->num_ports. It is being
replaced with the new define.
Suggested-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://lore.kernel.org/r/20240417205048.3542839-5-paweldembicki@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/dsa/vitesse-vsc73xx.h')
| -rw-r--r-- | drivers/net/dsa/vitesse-vsc73xx.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/net/dsa/vitesse-vsc73xx.h b/drivers/net/dsa/vitesse-vsc73xx.h index 30b1f0a36566..fee1378508b5 100644 --- a/drivers/net/dsa/vitesse-vsc73xx.h +++ b/drivers/net/dsa/vitesse-vsc73xx.h @@ -3,6 +3,17 @@ #include <linux/etherdevice.h> #include <linux/gpio/driver.h> +/* The VSC7395 switch chips have 5+1 ports which means 5 ordinary ports and + * a sixth CPU port facing the processor with an RGMII interface. These ports + * are numbered 0..4 and 6, so they leave a "hole" in the port map for port 5, + * which is invalid. + * + * The VSC7398 has 8 ports, port 7 is again the CPU port. + * + * We allocate 8 ports and avoid access to the nonexistent ports. + */ +#define VSC73XX_MAX_NUM_PORTS 8 + /** * struct vsc73xx - VSC73xx state container */ |