netdev - [PATCH net-next] ravb: Remove checks for unsupported internal delay modes

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Date:   Wed, 11 Aug 2021 17:49:00 +0200
From:   Geert Uytterhoeven <geert+renesas@...der.be>
To:     Sergey Shtylyov <s.shtylyov@....ru>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
Cc:     netdev@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH net-next] ravb: Remove checks for unsupported internal delay modes

The EtherAVB instances on the R-Car E3/D3 and RZ/G2E SoCs do not support
TX clock internal delay modes, and the EtherAVB driver prints a warning
if an unsupported "rgmii-*id" PHY mode is specified, to catch buggy
DTBs.

Commit a6f51f2efa742df0 ("ravb: Add support for explicit internal
clock delay configuration") deprecated deriving the internal delay mode
from the PHY mode, in favor of explicit configuration using the now
mandatory "rx-internal-delay-ps" and "tx-internal-delay-ps" properties,
thus delegating the warning to the legacy fallback code.

Since explicit configuration of a (valid) internal clock delay
configuration is enforced by validating device tree source files against
DT binding files, and all upstream DTS files have been converted as of
commit a5200e63af57d05e ("arm64: dts: renesas: rzg2: Convert EtherAVB to
explicit delay handling"), the checks in the legacy fallback code can be
removed.

Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
---
 drivers/net/ethernet/renesas/ravb_main.c | 15 ++-------------
 1 file changed, 2 insertions(+), 13 deletions(-)

diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index f4dfe9f71d067533..62b0605f02ff786e 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -1973,13 +1973,6 @@ static void ravb_set_config_mode(struct net_device *ndev)
 	}
 }

-static const struct soc_device_attribute ravb_delay_mode_quirk_match[] = {
-	{ .soc_id = "r8a774c0" },
-	{ .soc_id = "r8a77990" },
-	{ .soc_id = "r8a77995" },
-	{ /* sentinel */ }
-};
-
 /* Set tx and rx clock internal delay modes */
 static void ravb_parse_delay_mode(struct device_node *np, struct net_device *ndev)
 {
@@ -2010,12 +2003,8 @@ static void ravb_parse_delay_mode(struct device_node *np, struct net_device *nde

 	if (priv->phy_interface == PHY_INTERFACE_MODE_RGMII_ID ||
 	    priv->phy_interface == PHY_INTERFACE_MODE_RGMII_TXID) {
-		if (!WARN(soc_device_match(ravb_delay_mode_quirk_match),
-			  "phy-mode %s requires TX clock internal delay mode which is not supported by this hardware revision. Please update device tree",
-			  phy_modes(priv->phy_interface))) {
-			priv->txcidm = 1;
-			priv->rgmii_override = 1;
-		}
+		priv->txcidm = 1;
+		priv->rgmii_override = 1;
 	}
 }

-- 
2.25.1