On 01/27/2017 07:51 PM, Simon Horman wrote:
From: Kazuya Mizuguchi <kazuya.mizuguchi.ks@xxxxxxxxxxx>
This patch enables tx and rx clock internal delay modes (TDM and RDM).
This is to address a failure in the case of 1Gbps communication using the
by salvator-x board with the KSZ9031RNX phy. This has been reported to
occur with both the r8a7795 (H3) and r8a7796 (M3-W) SoCs.
With this change APSR internal delay modes are enabled for
"rgmii-id", "rgmii-rxid" and "rgmii-txid" phy modes as follows:
phy mode | ASPR delay mode
-----------+----------------
rgmii-id | TDM and RDM
rgmii-rxid | RDM
rgmii-txid | TDM
Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@xxxxxxxxxxx>
Signed-off-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>
---
v1 [Simon Horman]
- Combined patches
- Reworded changelog
v0 [Kazuya Mizuguchi]
[...]
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index 89ac1e3f6175..9fb4c04c5885 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
[...]
@@ -2016,6 +2039,9 @@ static int ravb_probe(struct platform_device *pdev)
/* Request GTI loading */
ravb_modify(ndev, GCCR, GCCR_LTI, GCCR_LTI);
+ /* Set APSR */
+ ravb_set_delay_mode(ndev);
+
/* Allocate descriptor base address table */
priv->desc_bat_size = sizeof(struct ravb_desc) * DBAT_ENTRY_NUM;
priv->desc_bat = dma_alloc_coherent(ndev->dev.parent, priv->desc_bat_size,
@@ -2152,6 +2178,9 @@ static int __maybe_unused ravb_resume(struct device *dev)
/* Request GTI loading */
ravb_modify(ndev, GCCR, GCCR_LTI, GCCR_LTI);
+ /* Set APSR */
+ ravb_set_delay_mode(ndev);
+
So far the pattern was to first check if gen != 2, then calling a gen3
specific function. I'd like to keep it, rather than checking in the function
itself.
So you would like something like?
/* Set APSR */
if (priv->chip_id != RCAR_GEN2)
ravb_set_delay_mode(ndev);
Yes (except the comment).
That does not seem better to me but I can make it so if that is your
preference.
Yes, not better code-wise but more consistent.
MBR, Sergei
