linux-kernel - [PATCHv2 1/2] arm64: dts: stratix10: Support Ethernet Jumbo frame

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Message-Id: <1540246946-12784-1-git-send-email-thor.thayer@linux.intel.com>
Date:   Mon, 22 Oct 2018 17:22:25 -0500
From:   thor.thayer@...ux.intel.com
To:     peppe.cavallaro@...com, alexandre.torgue@...com,
        joabreu@...opsys.com, davem@...emloft.net, dinguyen@...nel.org,
        robh+dt@...nel.org, mark.rutland@....com
Cc:     devicetree@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Thor Thayer <thor.thayer@...ux.intel.com>
Subject: [PATCHv2 1/2] arm64: dts: stratix10: Support Ethernet Jumbo frame

From: Thor Thayer <thor.thayer@...ux.intel.com>

Properly specify the RX and TX FIFO size which is important
for Jumbo frames.
Update the max-frame-size to support Jumbo frames.

Signed-off-by: Thor Thayer <thor.thayer@...ux.intel.com>
---
v2 Shorten title. No change to DTS.
---
 arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi      | 6 ++++++
 arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi b/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi
index d033da401c26..8a2641c742ae 100644
--- a/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi
+++ b/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi
@@ -137,6 +137,8 @@
 			reset-names = "stmmaceth", "stmmaceth-ocp";
 			clocks = <&clkmgr STRATIX10_EMAC0_CLK>;
 			clock-names = "stmmaceth";
+			tx-fifo-depth = <16384>;
+			rx-fifo-depth = <16384>;
 			status = "disabled";
 		};
 
@@ -150,6 +152,8 @@
 			reset-names = "stmmaceth", "stmmaceth-ocp";
 			clocks = <&clkmgr STRATIX10_EMAC1_CLK>;
 			clock-names = "stmmaceth";
+			tx-fifo-depth = <16384>;
+			rx-fifo-depth = <16384>;
 			status = "disabled";
 		};
 
@@ -163,6 +167,8 @@
 			reset-names = "stmmaceth", "stmmaceth-ocp";
 			clocks = <&clkmgr STRATIX10_EMAC2_CLK>;
 			clock-names = "stmmaceth";
+			tx-fifo-depth = <16384>;
+			rx-fifo-depth = <16384>;
 			status = "disabled";
 		};
 
diff --git a/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts b/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts
index 6edc4fa9fd42..7c661753bfaf 100644
--- a/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts
+++ b/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts
@@ -76,7 +76,7 @@
 	phy-mode = "rgmii";
 	phy-handle = <&phy0>;
 
-	max-frame-size = <3800>;
+	max-frame-size = <9000>;
 
 	mdio0 {
 		#address-cells = <1>;
-- 
2.7.4