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net: fec: Add possibility to enable TXC delay 

This patch enables the possibility to set FEC_ENET_ENABLE_TXC_DELAY or
FEC_ENET_ENABLE_RXC_DELAY so one can via a define enable the RXC or TXC
delay in the MAC.

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
This commit is contained in:
Philippe Schenker 2020-03-11 11:52:58 +01:00 committed by Stefano Babic
parent f72e48ba4d
commit a1a34faef2
2 changed files with 12 additions and 0 deletions
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10
drivers/net/fec_mxc.c
View File

@ -503,6 +503,16 @@ static int fec_open(struct eth_device *edev)
writel(readl(&fec->eth->ecntrl) | FEC_ECNTRL_ETHER_EN,
&fec->eth->ecntrl);
#ifdef FEC_ENET_ENABLE_TXC_DELAY
writel(readl(&fec->eth->ecntrl) | FEC_ECNTRL_TXC_DLY,
&fec->eth->ecntrl);
#endif
#ifdef FEC_ENET_ENABLE_RXC_DELAY
writel(readl(&fec->eth->ecntrl) | FEC_ECNTRL_RXC_DLY,
&fec->eth->ecntrl);
#endif
#if defined(CONFIG_MX25) || defined(CONFIG_MX53) || defined(CONFIG_MX6SL)
udelay(100);

2
drivers/net/fec_mxc.h
View File

@ -188,6 +188,8 @@ struct ethernet_regs {
#define FEC_ECNTRL_ETHER_EN 0x00000002 /* enable the FEC */
#define FEC_ECNTRL_SPEED 0x00000020
#define FEC_ECNTRL_DBSWAP 0x00000100
#define FEC_ECNTRL_TXC_DLY 0x00010000 /* TXC delayed */
#define FEC_ECNTRL_RXC_DLY 0x00020000 /* RXC delayed */
#define FEC_X_WMRK_STRFWD 0x00000100