[PATCH v2 2/5] arm64: dts: renesas: r9a09g087: Add ETHSS node

Prabhakar posted 5 patches 3 months, 2 weeks ago
[PATCH v2 2/5] arm64: dts: renesas: r9a09g087: Add ETHSS node
Posted by Prabhakar 3 months, 2 weeks ago
From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Add an Ethernet Switch Subsystem (ETHSS) device node to the RZ/N2H
(R9A09G087) SoC. The ETHSS IP block is responsible for handling MII
pass-through or conversion to RMII/RGMII.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
v1->v2 changes:
- No changes.
---
 arch/arm64/boot/dts/renesas/r9a09g087.dtsi | 37 ++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r9a09g087.dtsi b/arch/arm64/boot/dts/renesas/r9a09g087.dtsi
index 3ece794fb0a7..fe0087a7d4b4 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g087.dtsi
+++ b/arch/arm64/boot/dts/renesas/r9a09g087.dtsi
@@ -270,6 +270,43 @@ i2c2: i2c@81008000 {
 			status = "disabled";
 		};
 
+		ethss: ethss@80110000 {
+			compatible = "renesas,r9a09g087-miic", "renesas,r9a09g077-miic";
+			reg =  <0 0x80110000 0 0x10000>;
+			clocks = <&cpg CPG_CORE R9A09G087_ETCLKE>,
+				 <&cpg CPG_CORE R9A09G087_ETCLKB>,
+				 <&cpg CPG_CORE R9A09G087_ETCLKD>,
+				 <&cpg CPG_MOD 403>;
+			clock-names = "mii_ref", "rgmii_ref", "rmii_ref", "hclk";
+			resets = <&cpg 405>, <&cpg 406>;
+			reset-names = "rst", "crst";
+			power-domains = <&cpg>;
+			status = "disabled";
+
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			mii_conv0: mii-conv@0 {
+				reg = <0>;
+				status = "disabled";
+			};
+
+			mii_conv1: mii-conv@1 {
+				reg = <1>;
+				status = "disabled";
+			};
+
+			mii_conv2: mii-conv@2 {
+				reg = <2>;
+				status = "disabled";
+			};
+
+			mii_conv3: mii-conv@3 {
+				reg = <3>;
+				status = "disabled";
+			};
+		};
+
 		cpg: clock-controller@80280000 {
 			compatible = "renesas,r9a09g087-cpg-mssr";
 			reg = <0 0x80280000 0 0x1000>,
-- 
2.43.0
Re: [PATCH v2 2/5] arm64: dts: renesas: r9a09g087: Add ETHSS node
Posted by Geert Uytterhoeven 3 months ago
On Tue, 28 Oct 2025 at 18:55, Prabhakar <prabhakar.csengg@gmail.com> wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
>
> Add an Ethernet Switch Subsystem (ETHSS) device node to the RZ/N2H
> (R9A09G087) SoC. The ETHSS IP block is responsible for handling MII
> pass-through or conversion to RMII/RGMII.
>
> 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