Thread (26 messages) 26 messages, 4 authors, 2025-07-03

Re: [PATCH v7 07/14] arm64: dts: mediatek: mt7988: add basic ethernet-nodes

From: Daniel Golle <daniel@makrotopia.org>
Date: 2025-06-29 14:47:12
Also in: linux-arm-kernel, linux-devicetree, linux-mediatek, linux-pm, lkml

On Sat, Jun 28, 2025 at 06:54:42PM +0200, Frank Wunderlich wrote:
quoted hunk ↗ jump to hunk
From: Frank Wunderlich <redacted>

Add basic ethernet related nodes.

Mac1+2 needs pcs (sgmii+usxgmii) to work correctly which will be linked
later when driver is merged.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Frank Wunderlich <redacted>
---
v6:
- fix whitespace-errors for pdma irqs (spaces vs. tabs)
- move sram from eth reg to own sram node (needs CONFIG_SRAM)

v5:
- add reserved irqs and change names to fe0..fe3
- change rx-ringX to pdmaX to be closer to documentation

v4:
- comment for fixed-link on gmac0
- update 2g5 phy node
  - unit-name dec instead of hex to match reg property
  - move compatible before reg
  - drop phy-mode
- add interrupts for RSS
- add interrupt-names and drop reserved irqs for ethernet
- some reordering
- eth-reg and clock whitespace-fix based on angelos review
---
 arch/arm64/boot/dts/mediatek/mt7988a.dtsi | 137 +++++++++++++++++++++-
 1 file changed, 134 insertions(+), 3 deletions(-)
diff --git a/arch/arm64/boot/dts/mediatek/mt7988a.dtsi b/arch/arm64/boot/dts/mediatek/mt7988a.dtsi
index 560ec86dbec0..cf765a6b1fa8 100644
--- a/arch/arm64/boot/dts/mediatek/mt7988a.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7988a.dtsi
@@ -680,7 +680,28 @@ xphyu3port0: usb-phy@11e13000 {
 			};
 		};
 
-		clock-controller@11f40000 {
+		xfi_tphy0: phy@11f20000 {
+			compatible = "mediatek,mt7988-xfi-tphy";
+			reg = <0 0x11f20000 0 0x10000>;
+			clocks = <&xfi_pll CLK_XFIPLL_PLL_EN>,
+				 <&topckgen CLK_TOP_XFI_PHY_0_XTAL_SEL>;
+			clock-names = "xfipll", "topxtal";
+			resets = <&watchdog 14>;
+			mediatek,usxgmii-performance-errata;
+			#phy-cells = <0>;
+		};
+
+		xfi_tphy1: phy@11f30000 {
+			compatible = "mediatek,mt7988-xfi-tphy";
+			reg = <0 0x11f30000 0 0x10000>;
+			clocks = <&xfi_pll CLK_XFIPLL_PLL_EN>,
+				 <&topckgen CLK_TOP_XFI_PHY_1_XTAL_SEL>;
+			clock-names = "xfipll", "topxtal";
+			resets = <&watchdog 15>;
+			#phy-cells = <0>;
+		};
+
+		xfi_pll: clock-controller@11f40000 {
 			compatible = "mediatek,mt7988-xfi-pll";
 			reg = <0 0x11f40000 0 0x1000>;
 			resets = <&watchdog 16>;
@@ -714,19 +735,129 @@ phy_calibration_p3: calib@97c {
 			};
 		};
 
-		clock-controller@15000000 {
+		ethsys: clock-controller@15000000 {
 			compatible = "mediatek,mt7988-ethsys", "syscon";
 			reg = <0 0x15000000 0 0x1000>;
 			#clock-cells = <1>;
 			#reset-cells = <1>;
 		};
 
-		clock-controller@15031000 {
+		ethwarp: clock-controller@15031000 {
 			compatible = "mediatek,mt7988-ethwarp";
 			reg = <0 0x15031000 0 0x1000>;
 			#clock-cells = <1>;
 			#reset-cells = <1>;
 		};
+
+		eth: ethernet@15100000 {
+			compatible = "mediatek,mt7988-eth";
+			reg = <0 0x15100000 0 0x80000>;
I think this should be

reg = <0 0x15100000 0 0x40000>;

as the range from 15140000 ~ 1517ffff is used as SRAM on MT7981/MT7986 and
doesn't seem to be used at all on MT7988.

root@OpenWrt:~# devmem 0x15140000 32
0xDEADBEEF
...
root@OpenWrt:~# devmem 0x1517fffc 32
0xDEADBEEF
(with 0xDEADBEEF all that range)
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