* [PATCH v3] arm64: dts: renesas: rzt2h-n2h-evk: Enable Ethernet support
@ 2025-11-10 20:39 Prabhakar
2025-11-13 15:46 ` Geert Uytterhoeven
0 siblings, 1 reply; 2+ messages in thread
From: Prabhakar @ 2025-11-10 20:39 UTC (permalink / raw)
To: Geert Uytterhoeven, Magnus Damm, Rob Herring, Krzysztof Kozlowski,
Conor Dooley
Cc: linux-renesas-soc, devicetree, linux-kernel, Prabhakar, Biju Das,
Fabrizio Castro, Lad Prabhakar
From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Enable Ethernet support on the RZ/T2H and RZ/N2H EVKs.
Configure the MIIC converter in mode 0x6:
Port 0 <-> ETHSW Port 0
Port 1 <-> ETHSW Port 1
Port 2 <-> GMAC2
Port 3 <-> GMAC1
Enable the ETHSS, GMAC1 and GMAC2 nodes. ETHSW support will be added
once the switch driver is available.
Configure the MIIC converters to map ports according to the selected
switching mode, with converters 0 and 1 mapped to switch ports and
converters 2 and 3 mapped to GMAC ports.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
Note, as rest of the patches of series [0] has been already reviewed and
queued sending this lone patch for v3 review.
[0] https://lore.kernel.org/all/20251028175458.1037397-1-prabhakar.mahadev-lad.rj@bp.renesas.com/
v2->v3:
- Split comments
- Renamed ETHX_{MDC,MDIO} to GMACX_{MDC,MDIO}
- Updated commnet for SW2[8] to drop P27_2 and
P35_3-P35_5 as they are not used for GMAC1
- Renamed eth2 to gmac2 and eth3 to gmac1 in pinctrl nodes
- Corrected pin for ETH2_RXER
- Corrected the aliases to match the board schematics
- For led0 switched to use VSC8531_ACTIVITY instead of
VSC8531_LINK_ACTIVITY.
- Renamed phy3 to mdio1_phy and phy2 to mdio2_phy
v1->v2:
- Dropped *skew-psec properties which are not needed for
VSC8541 PHYs.
---
.../dts/renesas/r9a09g077m44-rzt2h-evk.dts | 70 +++++++++++++++++
.../dts/renesas/r9a09g087m44-rzn2h-evk.dts | 78 +++++++++++++++++++
.../dts/renesas/rzt2h-n2h-evk-common.dtsi | 70 +++++++++++++++++
3 files changed, 218 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts b/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts
index 799c58afd6fe..b7706d0bc3aa 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts
+++ b/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts
@@ -149,7 +149,77 @@ &i2c1 {
status = "okay";
};
+&mdio1_phy {
+ reset-gpios = <&pinctrl RZT2H_GPIO(32, 3) GPIO_ACTIVE_LOW>;
+};
+
+&mdio2_phy {
+ /*
+ * PHY2 Reset Configuration:
+ *
+ * SW6[1] OFF; SW6[2] ON; SW6[3] OFF - use pin P17_5 for GMAC_RESETOUT2#
+ */
+ reset-gpios = <&pinctrl RZT2H_GPIO(17, 5) GPIO_ACTIVE_LOW>;
+};
+
&pinctrl {
+ /*
+ * GMAC2 Pin Configuration:
+ *
+ * SW2[6] OFF - connect MDC/MDIO of Ethernet port 2 to GMAC2
+ * SW2[7] ON - use pins P29_1-P29_7, P30_0-P30_4, and P31_2-P31_5
+ * for Ethernet port 2
+ */
+ gmac2_pins: gmac2-pins {
+ pinmux = <RZT2H_PORT_PINMUX(29, 1, 0xf)>, /* ETH2_TXCLK */
+ <RZT2H_PORT_PINMUX(29, 2, 0xf)>, /* ETH2_TXD0 */
+ <RZT2H_PORT_PINMUX(29, 3, 0xf)>, /* ETH2_TXD1 */
+ <RZT2H_PORT_PINMUX(29, 4, 0xf)>, /* ETH2_TXD2 */
+ <RZT2H_PORT_PINMUX(29, 5, 0xf)>, /* ETH2_TXD3 */
+ <RZT2H_PORT_PINMUX(29, 6, 0xf)>, /* ETH2_TXEN */
+ <RZT2H_PORT_PINMUX(29, 7, 0xf)>, /* ETH2_RXCLK */
+ <RZT2H_PORT_PINMUX(30, 0, 0xf)>, /* ETH2_RXD0 */
+ <RZT2H_PORT_PINMUX(30, 1, 0xf)>, /* ETH2_RXD1 */
+ <RZT2H_PORT_PINMUX(30, 2, 0xf)>, /* ETH2_RXD2 */
+ <RZT2H_PORT_PINMUX(30, 3, 0xf)>, /* ETH2_RXD3 */
+ <RZT2H_PORT_PINMUX(30, 4, 0xf)>, /* ETH2_RXDV */
+ <RZT2H_PORT_PINMUX(31, 2, 0xf)>, /* ETH2_TXER */
+ <RZT2H_PORT_PINMUX(31, 3, 0xf)>, /* ETH2_RXER */
+ <RZT2H_PORT_PINMUX(31, 4, 0xf)>, /* ETH2_CRS */
+ <RZT2H_PORT_PINMUX(31, 5, 0xf)>, /* ETH2_COL */
+ <RZT2H_PORT_PINMUX(30, 5, 0x10)>, /* GMAC2_MDC */
+ <RZT2H_PORT_PINMUX(30, 6, 0x10)>, /* GMAC2_MDIO */
+ <RZT2H_PORT_PINMUX(31, 0, 0x2)>; /* ETH2_REFCLK */
+ };
+
+ /*
+ * GMAC1 Pin Configuration:
+ *
+ * SW2[8] ON - use pins P33_2-P33_7, P34_0-P34_5, P34_7 and
+ * P35_0-P35_2 for Ethernet port 3
+ */
+ gmac1_pins: gmac1-pins {
+ pinmux = <RZT2H_PORT_PINMUX(33, 2, 0xf)>, /* ETH3_TXCLK */
+ <RZT2H_PORT_PINMUX(33, 3, 0xf)>, /* ETH3_TXD0 */
+ <RZT2H_PORT_PINMUX(33, 4, 0xf)>, /* ETH3_TXD1 */
+ <RZT2H_PORT_PINMUX(33, 5, 0xf)>, /* ETH3_TXD2 */
+ <RZT2H_PORT_PINMUX(33, 6, 0xf)>, /* ETH3_TXD3 */
+ <RZT2H_PORT_PINMUX(33, 7, 0xf)>, /* ETH3_TXEN */
+ <RZT2H_PORT_PINMUX(34, 0, 0xf)>, /* ETH3_RXCLK */
+ <RZT2H_PORT_PINMUX(34, 1, 0xf)>, /* ETH3_RXD0 */
+ <RZT2H_PORT_PINMUX(34, 2, 0xf)>, /* ETH3_RXD1 */
+ <RZT2H_PORT_PINMUX(34, 3, 0xf)>, /* ETH3_RXD2 */
+ <RZT2H_PORT_PINMUX(34, 4, 0xf)>, /* ETH3_RXD3 */
+ <RZT2H_PORT_PINMUX(34, 5, 0xf)>, /* ETH3_RXDV */
+ <RZT2H_PORT_PINMUX(34, 7, 0xf)>, /* ETH3_TXER */
+ <RZT2H_PORT_PINMUX(35, 0, 0xf)>, /* ETH3_RXER */
+ <RZT2H_PORT_PINMUX(35, 1, 0xf)>, /* ETH3_CRS */
+ <RZT2H_PORT_PINMUX(35, 2, 0xf)>, /* ETH3_COL */
+ <RZT2H_PORT_PINMUX(26, 1, 0x10)>, /* GMAC1_MDC */
+ <RZT2H_PORT_PINMUX(26, 2, 0x10)>, /* GMAC1_MDIO */
+ <RZT2H_PORT_PINMUX(34, 6, 0x2)>; /* ETH3_REFCLK */
+ };
+
/*
* I2C0 Pin Configuration:
* ------------------------
diff --git a/arch/arm64/boot/dts/renesas/r9a09g087m44-rzn2h-evk.dts b/arch/arm64/boot/dts/renesas/r9a09g087m44-rzn2h-evk.dts
index d698b6368ee7..17c0c79fbd96 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g087m44-rzn2h-evk.dts
+++ b/arch/arm64/boot/dts/renesas/r9a09g087m44-rzn2h-evk.dts
@@ -186,7 +186,85 @@ &i2c1 {
status = "okay";
};
+&mdio1_phy {
+ /*
+ * PHY3 Reset Configuration:
+ *
+ * DSW12[5] OFF; DSW12[6] ON - use pin P03_2 for GMAC_RESETOUT3#
+ */
+ reset-gpios = <&pinctrl RZT2H_GPIO(3, 2) GPIO_ACTIVE_LOW>;
+};
+
+&mdio2_phy {
+ /*
+ * PHY2 Reset Configuration:
+ *
+ * DSW8[1] ON; DSW8[2] OFF; DSW12[7] OFF; DSW12[8] ON - use pin
+ * P03_1 for GMAC_RESETOUT2#
+ */
+ reset-gpios = <&pinctrl RZT2H_GPIO(3, 1) GPIO_ACTIVE_LOW>;
+};
+
&pinctrl {
+ /*
+ * GMAC2 Pin Configuration:
+ *
+ * DSW5[6] OFF - connect MDC/MDIO of Ethernet port 2 to GMAC2
+ * DSW5[7] ON - use pins P29_1-P29_7, P30_0-P30_4, P30_7,
+ * P31_2, P31_4 and P31_5 are used for Ethernet port 2
+ */
+ gmac2_pins: gmac2-pins {
+ pinmux = <RZT2H_PORT_PINMUX(29, 1, 0xf)>, /* ETH2_TXCLK */
+ <RZT2H_PORT_PINMUX(29, 2, 0xf)>, /* ETH2_TXD0 */
+ <RZT2H_PORT_PINMUX(29, 3, 0xf)>, /* ETH2_TXD1 */
+ <RZT2H_PORT_PINMUX(29, 4, 0xf)>, /* ETH2_TXD2 */
+ <RZT2H_PORT_PINMUX(29, 5, 0xf)>, /* ETH2_TXD3 */
+ <RZT2H_PORT_PINMUX(29, 6, 0xf)>, /* ETH2_TXEN */
+ <RZT2H_PORT_PINMUX(29, 7, 0xf)>, /* ETH2_RXCLK */
+ <RZT2H_PORT_PINMUX(30, 0, 0xf)>, /* ETH2_RXD0 */
+ <RZT2H_PORT_PINMUX(30, 1, 0xf)>, /* ETH2_RXD1 */
+ <RZT2H_PORT_PINMUX(30, 2, 0xf)>, /* ETH2_RXD2 */
+ <RZT2H_PORT_PINMUX(30, 3, 0xf)>, /* ETH2_RXD3 */
+ <RZT2H_PORT_PINMUX(30, 4, 0xf)>, /* ETH2_RXDV */
+ <RZT2H_PORT_PINMUX(31, 2, 0xf)>, /* ETH2_TXER */
+ <RZT2H_PORT_PINMUX(31, 1, 0xf)>, /* ETH2_RXER */
+ <RZT2H_PORT_PINMUX(31, 4, 0xf)>, /* ETH2_CRS */
+ <RZT2H_PORT_PINMUX(31, 5, 0xf)>, /* ETH2_COL */
+ <RZT2H_PORT_PINMUX(30, 5, 0x10)>, /* GMAC2_MDC */
+ <RZT2H_PORT_PINMUX(30, 6, 0x10)>, /* GMAC2_MDIO */
+ <RZT2H_PORT_PINMUX(31, 0, 0x2)>; /* ETH2_REFCLK */
+
+ };
+
+ /*
+ * GMAC2 Pin Configuration:
+ *
+ * DSW5[8] ON - use pins P00_0-P00_2, P33_2-P33_7, P34_0-P34_6
+ * for Ethernet port 3
+ * DSW12[1] OFF; DSW12[2] ON - use pin P00_3 for Ethernet port 3
+ */
+ gmac1_pins: gmac1-pins {
+ pinmux = <RZT2H_PORT_PINMUX(33, 2, 0xf)>, /* ETH3_TXCLK */
+ <RZT2H_PORT_PINMUX(33, 3, 0xf)>, /* ETH3_TXD0 */
+ <RZT2H_PORT_PINMUX(33, 4, 0xf)>, /* ETH3_TXD0 */
+ <RZT2H_PORT_PINMUX(33, 5, 0xf)>, /* ETH3_TXD2 */
+ <RZT2H_PORT_PINMUX(33, 6, 0xf)>, /* ETH3_TXD3 */
+ <RZT2H_PORT_PINMUX(33, 7, 0xf)>, /* ETH3_TXEN */
+ <RZT2H_PORT_PINMUX(34, 0, 0xf)>, /* ETH3_RXCLK */
+ <RZT2H_PORT_PINMUX(34, 1, 0xf)>, /* ETH3_RXD0 */
+ <RZT2H_PORT_PINMUX(34, 2, 0xf)>, /* ETH3_RXD1 */
+ <RZT2H_PORT_PINMUX(34, 3, 0xf)>, /* ETH3_RXD2 */
+ <RZT2H_PORT_PINMUX(34, 4, 0xf)>, /* ETH3_RXD3 */
+ <RZT2H_PORT_PINMUX(34, 5, 0xf)>, /* ETH3_RXDV */
+ <RZT2H_PORT_PINMUX(0, 0, 0xf)>, /* ETH3_TXER */
+ <RZT2H_PORT_PINMUX(0, 1, 0xf)>, /* ETH3_RXER */
+ <RZT2H_PORT_PINMUX(0, 2, 0xf)>, /* ETH3_CRS */
+ <RZT2H_PORT_PINMUX(0, 3, 0xf)>, /* ETH3_COL */
+ <RZT2H_PORT_PINMUX(26, 1, 0x10)>, /* GMAC1_MDC */
+ <RZT2H_PORT_PINMUX(26, 2, 0x10)>, /* GMAC1_MDIO */
+ <RZT2H_PORT_PINMUX(34, 6, 0x2)>; /* ETH3_REFCLK */
+ };
+
/*
* I2C0 Pin Configuration:
* ------------------------
diff --git a/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi b/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi
index 924a38c6cb0f..3eed1f3948e8 100644
--- a/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi
@@ -7,10 +7,14 @@
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/leds/common.h>
+#include <dt-bindings/net/mscc-phy-vsc8531.h>
+#include <dt-bindings/net/renesas,r9a09g077-pcs-miic.h>
#include <dt-bindings/pinctrl/renesas,r9a09g077-pinctrl.h>
/ {
aliases {
+ ethernet3 = &gmac1;
+ ethernet2 = &gmac2;
i2c0 = &i2c0;
i2c1 = &i2c1;
mmc0 = &sdhi0;
@@ -70,10 +74,34 @@ &ehci {
status = "okay";
};
+ðss {
+ status = "okay";
+
+ renesas,miic-switch-portin = <ETHSS_GMAC0_PORT>;
+};
+
&extal_clk {
clock-frequency = <25000000>;
};
+&gmac1 {
+ pinctrl-0 = <&gmac1_pins>;
+ pinctrl-names = "default";
+ phy-handle = <&mdio1_phy>;
+ phy-mode = "rgmii-id";
+ pcs-handle = <&mii_conv3>;
+ status = "okay";
+};
+
+&gmac2 {
+ pinctrl-0 = <&gmac2_pins>;
+ pinctrl-names = "default";
+ phy-handle = <&mdio2_phy>;
+ phy-mode = "rgmii-id";
+ pcs-handle = <&mii_conv2>;
+ status = "okay";
+};
+
&hsusb {
dr_mode = "otg";
status = "okay";
@@ -87,6 +115,48 @@ eeprom: eeprom@50 {
};
};
+&mdio1 {
+ mdio1_phy: ethernet-phy@3 {
+ compatible = "ethernet-phy-id0007.0772", "ethernet-phy-ieee802.3-c22";
+ reg = <3>;
+ vsc8531,led-0-mode = <VSC8531_ACTIVITY>;
+ vsc8531,led-1-mode = <VSC8531_LINK_ACTIVITY>;
+ reset-assert-us = <2000>;
+ reset-deassert-us = <15000>;
+ };
+};
+
+&mdio2 {
+ mdio2_phy: ethernet-phy@2 {
+ compatible = "ethernet-phy-id0007.0772", "ethernet-phy-ieee802.3-c22";
+ reg = <2>;
+ vsc8531,led-0-mode = <VSC8531_ACTIVITY>;
+ vsc8531,led-1-mode = <VSC8531_LINK_ACTIVITY>;
+ reset-assert-us = <2000>;
+ reset-deassert-us = <15000>;
+ };
+};
+
+&mii_conv0 {
+ renesas,miic-input = <ETHSS_ETHSW_PORT0>;
+ status = "okay";
+};
+
+&mii_conv1 {
+ renesas,miic-input = <ETHSS_ETHSW_PORT1>;
+ status = "okay";
+};
+
+&mii_conv2 {
+ renesas,miic-input = <ETHSS_GMAC2_PORT>;
+ status = "okay";
+};
+
+&mii_conv3 {
+ renesas,miic-input = <ETHSS_GMAC1_PORT>;
+ status = "okay";
+};
+
&ohci {
dr_mode = "otg";
status = "okay";
--
2.43.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH v3] arm64: dts: renesas: rzt2h-n2h-evk: Enable Ethernet support
2025-11-10 20:39 [PATCH v3] arm64: dts: renesas: rzt2h-n2h-evk: Enable Ethernet support Prabhakar
@ 2025-11-13 15:46 ` Geert Uytterhoeven
0 siblings, 0 replies; 2+ messages in thread
From: Geert Uytterhoeven @ 2025-11-13 15:46 UTC (permalink / raw)
To: Prabhakar
Cc: Magnus Damm, Rob Herring, Krzysztof Kozlowski, Conor Dooley,
linux-renesas-soc, devicetree, linux-kernel, Biju Das,
Fabrizio Castro, Lad Prabhakar
On Mon, 10 Nov 2025 at 21:39, Prabhakar <prabhakar.csengg@gmail.com> wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
>
> Enable Ethernet support on the RZ/T2H and RZ/N2H EVKs.
>
> Configure the MIIC converter in mode 0x6:
> Port 0 <-> ETHSW Port 0
> Port 1 <-> ETHSW Port 1
> Port 2 <-> GMAC2
> Port 3 <-> GMAC1
>
> Enable the ETHSS, GMAC1 and GMAC2 nodes. ETHSW support will be added
> once the switch driver is available.
>
> Configure the MIIC converters to map ports according to the selected
> switching mode, with converters 0 and 1 mapped to switch ports and
> converters 2 and 3 mapped to GMAC ports.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v6.19.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
^ permalink raw reply [flat|nested] 2+ messages in thread
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2025-11-10 20:39 [PATCH v3] arm64: dts: renesas: rzt2h-n2h-evk: Enable Ethernet support Prabhakar
2025-11-13 15:46 ` Geert Uytterhoeven
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