define FEC_ENET_ENABLE_TXC_DELAY to enable the delay on TXC line on the MAC. This has to be done in order to meet RGMII specs. According to RGMII specs the clock should get delayed so the edges of the clock are preferrably in the middle of the edges of data-lines so they can be sampled properly. Our PHY expects the MAC to delay TXC line, as it is also written in the spec. This patch makes sure the TXC delay on the FEC is enabled
Signed-off-by: Philippe Schenker philippe.schenker@toradex.com Reviewed-by: Oleksandr Suvorov oleksandr.suvorov@toradex.com
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Changes in v3: - Add Olek's revied-by tag
Changes in v2: - Entered a 'why' description in patch 'config: apalis-imx8: Enable FEC TXC delay'
include/configs/apalis-imx8.h | 1 + 1 file changed, 1 insertion(+)
diff --git a/include/configs/apalis-imx8.h b/include/configs/apalis-imx8.h index bea035c3e23..40037157339 100644 --- a/include/configs/apalis-imx8.h +++ b/include/configs/apalis-imx8.h @@ -24,6 +24,7 @@
/* Networking */ #define FEC_QUIRK_ENET_MAC +#define FEC_ENET_ENABLE_TXC_DELAY
#define CONFIG_TFTP_TSIZE