diff options
| author | Daire McNamara <daire.mcnamara@microchip.com> | 2023-05-12 13:20:32 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-05-13 20:46:38 +0100 |
| commit | 314cf958de2a784dd3984190311e15aa1fbf2717 (patch) | |
| tree | adcb38df3ce138f07ffb1d10dcedb126a6465f5b /drivers/net/ethernet/cadence/macb.h | |
| parent | f1b5dfe63f6a9eb17948cbaee4da4b66f51ac794 (diff) | |
net: macb: Shorten max_tx_len to 4KiB - 56 on mpfs
On mpfs, with SRAM configured for 4 queues, setting max_tx_len
to GEM_TX_MAX_LEN=0x3f0 results multiple AMBA errors.
Setting max_tx_len to (4KiB - 56) removes those errors.
The details are described in erratum 1686 by Cadence
The max jumbo frame size is also reduced for mpfs to (4KiB - 56).
Signed-off-by: Daire McNamara <daire.mcnamara@microchip.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/cadence/macb.h')
| -rw-r--r-- | drivers/net/ethernet/cadence/macb.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h index cfbdd0022764..b6d5bf8deb79 100644 --- a/drivers/net/ethernet/cadence/macb.h +++ b/drivers/net/ethernet/cadence/macb.h @@ -1181,6 +1181,7 @@ struct macb_config { struct clk **hclk, struct clk **tx_clk, struct clk **rx_clk, struct clk **tsu_clk); int (*init)(struct platform_device *pdev); + unsigned int max_tx_length; int jumbo_max_len; const struct macb_usrio_config *usrio; }; |