Re: [PATCH net 2/2] net: dsa: mt7530: fix port mirroring for MT7988 SoC switch

From: Daniel Golle
Date: Sat Apr 13 2024 - 23:41:42 EST


On Sat, Apr 13, 2024 at 04:01:40PM +0300, Arınç ÜNAL via B4 Relay wrote:
> From: Arınç ÜNAL <arinc.unal@xxxxxxxxxx>
>
> The "MT7988A Wi-Fi 7 Generation Router Platform: Datasheet (Open Version)
> v0.1" document shows bits 16 to 18 as the MIRROR_PORT field of the CPU
> forward control register. Currently, the MT7530 DSA subdriver configures
> bits 0 to 2 of the CPU forward control register which breaks the port
> mirroring feature for the MT7988 SoC switch.
>
> Fix this by using the MT7531_MIRROR_PORT_GET() and MT7531_MIRROR_PORT_SET()
> macros which utilise the correct bits.
>
> Fixes: 110c18bfed41 ("net: dsa: mt7530: introduce driver for MT7988 built-in switch")
> Signed-off-by: Arınç ÜNAL <arinc.unal@xxxxxxxxxx>

Acked-by: Daniel Golle <daniel@xxxxxxxxxxxxxx>

> ---
> drivers/net/dsa/mt7530.c | 10 ++++++----
> 1 file changed, 6 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
> index b84e1845fa02..8090390edaf9 100644
> --- a/drivers/net/dsa/mt7530.c
> +++ b/drivers/net/dsa/mt7530.c
> @@ -1883,14 +1883,16 @@ mt7530_port_vlan_del(struct dsa_switch *ds, int port,
>
> static int mt753x_mirror_port_get(unsigned int id, u32 val)
> {
> - return (id == ID_MT7531) ? MT7531_MIRROR_PORT_GET(val) :
> - MIRROR_PORT(val);
> + return (id == ID_MT7531 || id == ID_MT7988) ?
> + MT7531_MIRROR_PORT_GET(val) :
> + MIRROR_PORT(val);
> }
>
> static int mt753x_mirror_port_set(unsigned int id, u32 val)
> {
> - return (id == ID_MT7531) ? MT7531_MIRROR_PORT_SET(val) :
> - MIRROR_PORT(val);
> + return (id == ID_MT7531 || id == ID_MT7988) ?
> + MT7531_MIRROR_PORT_SET(val) :
> + MIRROR_PORT(val);
> }
>
> static int mt753x_port_mirror_add(struct dsa_switch *ds, int port,
>
> --
> 2.40.1
>
>