Allow modification of two additional Frame Manager parameters :
- FM Max Frame Size : Can be changed to a value other than 1522
(ie support Jumbo Frames)
- RX Extra Headroom
Signed-off-by: Fred Lefranc <hardware.evs@xxxxxxxxx>
---
drivers/net/ethernet/freescale/fman/fman.c | 26 ++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/drivers/net/ethernet/freescale/fman/fman.c b/drivers/net/ethernet/freescale/fman/fman.c
index 8f0db61cb1f6..bf4240eacf42 100644
--- a/drivers/net/ethernet/freescale/fman/fman.c
+++ b/drivers/net/ethernet/freescale/fman/fman.c
@@ -2862,6 +2862,32 @@ static struct fman *read_dts_node(struct platform_device *of_dev)
of_property_read_bool(fm_node, "fsl,erratum-a050385");
#endif
+ /* Get Max Frame Size */
+ err = of_property_read_u32(fm_node, "fsl,max-frm-sz", &val);
+ if (!err) {
+ if (val > FSL_FM_MAX_POSSIBLE_FRAME_SIZE)
+ fsl_fm_max_frm = FSL_FM_MAX_POSSIBLE_FRAME_SIZE;
+ else if (val < FSL_FM_MIN_POSSIBLE_FRAME_SIZE)
+ fsl_fm_max_frm = FSL_FM_MIN_POSSIBLE_FRAME_SIZE;
+ else
+ fsl_fm_max_frm = (int)val;
+ }
+ dev_dbg(&of_dev->dev, "Configured Max Frame Size: %d\n",
+ fsl_fm_max_frm);
+
+ /* Get RX Extra Headroom Value */
+ err = of_property_read_u32(fm_node, "fsl,rx-extra-headroom", &val);
+ if (!err) {
+ if (val > FSL_FM_RX_EXTRA_HEADROOM_MAX)
+ fsl_fm_rx_extra_headroom = FSL_FM_RX_EXTRA_HEADROOM_MAX;
+ else if (val < FSL_FM_RX_EXTRA_HEADROOM_MIN)
+ fsl_fm_rx_extra_headroom = FSL_FM_RX_EXTRA_HEADROOM_MIN;
+ else
+ fsl_fm_rx_extra_headroom = (int)val;
+ }
+ dev_dbg(&of_dev->dev, "Configured RX Extra Headroom: %d\n",
+ fsl_fm_rx_extra_headroom);
+
return fman;
fman_node_put:
--
2.25.1
