[PATCH v3 0/2] Enable Renesas RZ/G3L GBETH0

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* [PATCH v3 0/2] Enable Renesas RZ/G3L GBETH0
@ 2026-03-26 11:19 Biju
  2026-03-26 11:19 ` [PATCH v3 1/2] arm64: dts: renesas: r9a08g046: Add GBETH nodes Biju
  0 siblings, 1 reply; 2+ messages in thread
From: Biju @ 2026-03-26 11:19 UTC (permalink / raw)
  To: Geert Uytterhoeven, Magnus Damm, Rob Herring, Krzysztof Kozlowski,
	Conor Dooley, Richard Cochran
  Cc: Biju Das, linux-renesas-soc, devicetree, linux-kernel, netdev,
	Prabhakar Mahadev Lad, Biju Das

From: Biju Das <biju.das.jz@bp.renesas.com>

Enable the Gigabit Ethernet Interface (GBETH0) populated on the RZ/G3L
SMARC EVK. The eth1, pincontrol definitions and hotplug support will be
added later.

This patch series depend upon [1]

v2->v3:
 * Rebased to boot series [1].
 * Dropped ethernet-phy-ieee802.3-c22 from compatible.
 * Fixed the typo txdv-skew-psec->txen-skew-psec.
v1->v2:
 * Separated ethernet dts patches from series [2]
 * Added rmii_{tx,rx) clocks.

[1] https://lore.kernel.org/all/20260324114329.268249-12-biju.das.jz@bp.renesas.com/
[2] https://lore.kernel.org/all/20260128125850.425264-1-biju.das.jz@bp.renesas.com/

Biju Das (2):
  arm64: dts: renesas: r9a08g046: Add GBETH nodes
  arm64: dts: renesas: rzg3l-smarc-som: Enable eth0 (GBETH0) interface

 arch/arm64/boot/dts/renesas/r9a08g046.dtsi    | 241 ++++++++++++++++++
 .../boot/dts/renesas/rzg3l-smarc-som.dtsi     |  34 +++
 2 files changed, 275 insertions(+)

-- 
2.43.0


^ permalink raw reply	[flat|nested] 2+ messages in thread

* [PATCH v3 1/2] arm64: dts: renesas: r9a08g046: Add GBETH nodes
  2026-03-26 11:19 [PATCH v3 0/2] Enable Renesas RZ/G3L GBETH0 Biju
@ 2026-03-26 11:19 ` Biju
  0 siblings, 0 replies; 2+ messages in thread
From: Biju @ 2026-03-26 11:19 UTC (permalink / raw)
  To: Geert Uytterhoeven, Magnus Damm, Rob Herring, Krzysztof Kozlowski,
	Conor Dooley, Richard Cochran
  Cc: Biju Das, linux-renesas-soc, devicetree, linux-kernel, netdev,
	Prabhakar Mahadev Lad, Biju Das

From: Biju Das <biju.das.jz@bp.renesas.com>

Renesas RZ/G3L SoC is equipped with 2x Synopsys DesignWare Ethernet
(10/100/1000 BASE) with TSN, IP block version 5.30. Add GBETH nodes
to R9A08G046 RZ/G3L SoC DTSI.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
v2->v3:
 * Rebased to boot series.
v1->v2:
 * Added rmii_{tx,rx) clocks.
---
 arch/arm64/boot/dts/renesas/r9a08g046.dtsi | 241 +++++++++++++++++++++
 1 file changed, 241 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r9a08g046.dtsi b/arch/arm64/boot/dts/renesas/r9a08g046.dtsi
index e030e785ea2a..0987c531ecf4 100644
--- a/arch/arm64/boot/dts/renesas/r9a08g046.dtsi
+++ b/arch/arm64/boot/dts/renesas/r9a08g046.dtsi
@@ -171,6 +171,240 @@ sdhi1: mmc@11c10000 {
 			/* placeholder */
 		};
 
+		eth0: ethernet@11c30000 {
+			compatible = "renesas,r9a08g046-gbeth", "snps,dwmac-5.30a";
+			reg = <0 0x11c30000 0 0x10000>;
+			interrupts = <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 80 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 79 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 85 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 86 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 87 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 88 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 81 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 82 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 83 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 84 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 89 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 90 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 91 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 92 IRQ_TYPE_EDGE_RISING>;
+			interrupt-names = "macirq", "eth_wake_irq", "eth_lpi",
+					  "rx-queue-0", "rx-queue-1", "rx-queue-2",
+					  "rx-queue-3", "tx-queue-0", "tx-queue-1",
+					  "tx-queue-2", "tx-queue-3", "ptp-pps-0",
+					  "ptp-pps-1", "ptp-pps-2", "ptp-pps-3";
+			clocks =  <&cpg CPG_MOD R9A08G046_ETH0_CLK_AXI>,
+				  <&cpg CPG_MOD R9A08G046_ETH0_CLK_CHI>,
+				  <&cpg CPG_MOD R9A08G046_ETH0_CLK_PTP_REF_I>,
+				  <&cpg CPG_MOD R9A08G046_ETH0_CLK_TX_I>,
+				  <&cpg CPG_MOD R9A08G046_ETH0_CLK_RX_I>,
+				  <&cpg CPG_MOD R9A08G046_ETH0_CLK_TX_180_I>,
+				  <&cpg CPG_MOD R9A08G046_ETH0_CLK_RX_180_I>,
+				  <&cpg CPG_MOD R9A08G046_ETH0_CLK_RMII_I>,
+				  <&cpg CPG_MOD R9A08G046_ETH0_CLK_TX_I_RMII>,
+				  <&cpg CPG_MOD R9A08G046_ETH0_CLK_RX_I_RMII>;
+			clock-names = "stmmaceth", "pclk", "ptp_ref",
+				      "tx", "rx", "tx-180", "rx-180",
+				      "rmii", "rmii_tx", "rmii_rx";
+			resets = <&cpg R9A08G046_ETH0_ARESET_N>;
+			power-domains = <&cpg>;
+			snps,multicast-filter-bins = <256>;
+			snps,perfect-filter-entries = <128>;
+			rx-fifo-depth = <8192>;
+			tx-fifo-depth = <8192>;
+			snps,fixed-burst;
+			snps,no-pbl-x8;
+			snps,force_thresh_dma_mode;
+			snps,axi-config = <&stmmac_axi_setup>;
+			snps,mtl-rx-config = <&mtl_rx_setup0>;
+			snps,mtl-tx-config = <&mtl_tx_setup0>;
+			snps,txpbl = <32>;
+			snps,rxpbl = <32>;
+			status = "disabled";
+
+			mdio0: mdio {
+				compatible = "snps,dwmac-mdio";
+				#address-cells = <1>;
+				#size-cells = <0>;
+			};
+
+			mtl_rx_setup0: rx-queues-config {
+				snps,rx-queues-to-use = <4>;
+				snps,rx-sched-sp;
+
+				queue0 {
+					snps,dcb-algorithm;
+					snps,priority = <0x1>;
+					snps,map-to-dma-channel = <0>;
+				};
+
+				queue1 {
+					snps,dcb-algorithm;
+					snps,priority = <0x2>;
+					snps,map-to-dma-channel = <1>;
+				};
+
+				queue2 {
+					snps,dcb-algorithm;
+					snps,priority = <0x4>;
+					snps,map-to-dma-channel = <2>;
+				};
+
+				queue3 {
+					snps,dcb-algorithm;
+					snps,priority = <0x8>;
+					snps,map-to-dma-channel = <3>;
+				};
+			};
+
+			mtl_tx_setup0: tx-queues-config {
+				snps,tx-queues-to-use = <4>;
+				snps,tx-sched-wrr;
+
+				queue0 {
+					snps,weight = <0x10>;
+					snps,dcb-algorithm;
+					snps,priority = <0x1>;
+				};
+
+				queue1 {
+					snps,weight = <0x12>;
+					snps,dcb-algorithm;
+					snps,priority = <0x2>;
+				};
+
+				queue2 {
+					snps,weight = <0x14>;
+					snps,dcb-algorithm;
+					snps,priority = <0x4>;
+				};
+
+				queue3 {
+					snps,weight = <0x18>;
+					snps,dcb-algorithm;
+					snps,priority = <0x8>;
+				};
+			};
+		};
+
+		eth1: ethernet@11c40000 {
+			compatible = "renesas,r9a08g046-gbeth", "snps,dwmac-5.30a";
+			reg = <0 0x11c40000 0 0x10000>;
+			interrupts = <GIC_SPI 93 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 100 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 101 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 102 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 103 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 96 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 97 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 98 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 99 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 104 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 105 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 106 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 107 IRQ_TYPE_EDGE_RISING>;
+			interrupt-names = "macirq", "eth_wake_irq", "eth_lpi",
+					  "rx-queue-0", "rx-queue-1", "rx-queue-2",
+					  "rx-queue-3", "tx-queue-0", "tx-queue-1",
+					  "tx-queue-2", "tx-queue-3", "ptp-pps-0",
+					  "ptp-pps-1", "ptp-pps-2", "ptp-pps-3";
+			clocks = <&cpg CPG_MOD R9A08G046_ETH1_CLK_AXI>,
+				 <&cpg CPG_MOD R9A08G046_ETH1_CLK_CHI>,
+				 <&cpg CPG_MOD R9A08G046_ETH1_CLK_PTP_REF_I>,
+				 <&cpg CPG_MOD R9A08G046_ETH1_CLK_TX_I>,
+				 <&cpg CPG_MOD R9A08G046_ETH1_CLK_RX_I>,
+				 <&cpg CPG_MOD R9A08G046_ETH1_CLK_TX_180_I>,
+				 <&cpg CPG_MOD R9A08G046_ETH1_CLK_RX_180_I>,
+				 <&cpg CPG_MOD R9A08G046_ETH1_CLK_RMII_I>,
+				 <&cpg CPG_MOD R9A08G046_ETH1_CLK_TX_I_RMII>,
+				 <&cpg CPG_MOD R9A08G046_ETH1_CLK_RX_I_RMII>;
+			clock-names = "stmmaceth", "pclk", "ptp_ref",
+				      "tx", "rx", "tx-180", "rx-180",
+				      "rmii", "rmii_tx", "rmii_rx";
+			resets = <&cpg R9A08G046_ETH1_ARESET_N>;
+			power-domains = <&cpg>;
+			snps,multicast-filter-bins = <256>;
+			snps,perfect-filter-entries = <128>;
+			rx-fifo-depth = <8192>;
+			tx-fifo-depth = <8192>;
+			snps,fixed-burst;
+			snps,no-pbl-x8;
+			snps,force_thresh_dma_mode;
+			snps,axi-config = <&stmmac_axi_setup>;
+			snps,mtl-rx-config = <&mtl_rx_setup1>;
+			snps,mtl-tx-config = <&mtl_tx_setup1>;
+			snps,txpbl = <32>;
+			snps,rxpbl = <32>;
+			status = "disabled";
+
+			mdio1: mdio {
+				compatible = "snps,dwmac-mdio";
+				#address-cells = <1>;
+				#size-cells = <0>;
+			};
+
+			mtl_rx_setup1: rx-queues-config {
+				snps,rx-queues-to-use = <4>;
+				snps,rx-sched-sp;
+
+				queue0 {
+					snps,dcb-algorithm;
+					snps,priority = <0x1>;
+					snps,map-to-dma-channel = <0>;
+				};
+
+				queue1 {
+					snps,dcb-algorithm;
+					snps,priority = <0x2>;
+					snps,map-to-dma-channel = <1>;
+				};
+
+				queue2 {
+					snps,dcb-algorithm;
+					snps,priority = <0x4>;
+					snps,map-to-dma-channel = <2>;
+				};
+
+				queue3 {
+					snps,dcb-algorithm;
+					snps,priority = <0x8>;
+					snps,map-to-dma-channel = <3>;
+				};
+			};
+
+			mtl_tx_setup1: tx-queues-config {
+				snps,tx-queues-to-use = <4>;
+				snps,tx-sched-wrr;
+
+				queue0 {
+					snps,weight = <0x10>;
+					snps,dcb-algorithm;
+					snps,priority = <0x1>;
+				};
+
+				queue1 {
+					snps,weight = <0x12>;
+					snps,dcb-algorithm;
+					snps,priority = <0x2>;
+				};
+
+				queue2 {
+					snps,weight = <0x14>;
+					snps,dcb-algorithm;
+					snps,priority = <0x4>;
+				};
+
+				queue3 {
+					snps,weight = <0x18>;
+					snps,dcb-algorithm;
+					snps,priority = <0x8>;
+				};
+			};
+		};
+
 		pcie: pcie@11e40000 {
 			reg = <0 0x11e40000 0 0x10000>;
 			ranges = <0x02000000 0 0x30000000 0 0x30000000 0 0x08000000>;
@@ -200,6 +434,13 @@ gic: interrupt-controller@12400000 {
 		};
 	};
 
+	stmmac_axi_setup: stmmac-axi-config {
+		snps,lpi_en;
+		snps,wr_osr_lmt = <0xf>;
+		snps,rd_osr_lmt = <0xf>;
+		snps,blen = <16 8 4 0 0 0 0>;
+	};
+
 	timer {
 		compatible = "arm,armv8-timer";
 		interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW>,
-- 
2.43.0


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