diff mbox series

[5.10.y-cip,09/47] net: ravb: Fix lack of register setting after system resumed for Gen3

Message ID 20240529081039.639010-10-claudiu.beznea.uj@bp.renesas.com (mailing list archive)
State New
Headers show
Series Add Ethernet support for Renesas RZ/G3S SoC | expand

Commit Message

Claudiu Beznea May 29, 2024, 8:10 a.m. UTC 
From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>

commit c2b6cdee1d13ffbb24baca3c9b8a572d6b541e4e upstream.

After system entered Suspend to RAM, registers setting of this
hardware is reset because the SoC will be turned off. On R-Car Gen3
(info->ccc_gac), ravb_ptp_init() is called in ravb_probe() only. So,
after system resumed, it lacks of the initial settings for ptp. So,
add ravb_ptp_{init,stop}() into ravb_{resume,suspend}().

Fixes: f5d7837f96e5 ("ravb: ptp: Add CONFIG mode support")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---
 drivers/net/ethernet/renesas/ravb_main.c | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index 23fb75b9ee0d..c15a4d56e79f 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -2994,6 +2994,9 @@  static int __maybe_unused ravb_suspend(struct device *dev)
 	else
 		ret = ravb_close(ndev);
 
+	if (priv->info->ccc_gac)
+		ravb_ptp_stop(ndev);
+
 	return ret;
 }
 
@@ -3032,6 +3035,9 @@  static int __maybe_unused ravb_resume(struct device *dev)
 	/* Restore descriptor base address table */
 	ravb_write(ndev, priv->desc_bat_dma, DBAT);
 
+	if (priv->info->ccc_gac)
+		ravb_ptp_init(ndev, priv->pdev);
+
 	if (netif_running(ndev)) {
 		if (priv->wol_enabled) {
 			ret = ravb_wol_restore(ndev);