openwrt/target/linux/ipq40xx/patches-5.15/706-arm-dts-ipq4019-add-switch-node.patch
Robert Marko b1f21329d4 ipq40xx: add DSA switch driver
Qualcomm IPQ40xx SoC-s have a variant of QCA8337N switch built-in.

It shares most of the stuff with its external counterpart, however it is
modified for the SoC.
Namely, it doesn't have second CPU port (Port 6), so it has 6 ports
instead of 7.
It also has no built-in PHY-s but rather requires external PSGMII based
companion PHY-s (QCA8072 and QCA8075) for which it first needs to carry
out calibration before using them.
PSGMII has a SoC built-in PHY that is used to connect to the PHY-s which
unfortunately requires some magic values as the datasheet doesnt document
the bits that are being set or the register at all.

Since its built-in it is MMIO like other peripherals and doesn't have its
own MDIO bus but depends on the SoC provided one.

CPU connection is at Port 0 and it uses some kind of a internal connection
and no traditional RGMII/SGMII.
It also doesn't use in-band tagging like other qca8k switches so a shinfo
based tagger is used.

This is based on the current OpenWrt qca8k version that has been imported
from generic target.

Signed-off-by: Robert Marko <robert.marko@sartura.hr>
2022-10-02 23:04:38 +02:00

99 lines
2.1 KiB
Diff

From ebb62523990a27b3a25e422fa575619f7f725a20 Mon Sep 17 00:00:00 2001
From: Robert Marko <robert.marko@sartura.hr>
Date: Mon, 1 Nov 2021 18:15:04 +0100
Subject: [PATCH] arm: dts: ipq4019: add switch node
Since the built-in IPQ40xx switch now has a driver, add the required node
for it to work.
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
---
arch/arm/boot/dts/qcom-ipq4019.dtsi | 78 +++++++++++++++++++++++++++++
1 file changed, 78 insertions(+)
--- a/arch/arm/boot/dts/qcom-ipq4019.dtsi
+++ b/arch/arm/boot/dts/qcom-ipq4019.dtsi
@@ -590,6 +590,82 @@
status = "disabled";
};
+ switch: switch@c000000 {
+ compatible = "qca,ipq4019-qca8337n";
+ reg = <0xc000000 0x80000>, <0x98000 0x800>;
+ reg-names = "base", "psgmii_phy";
+ resets = <&gcc ESS_PSGMII_ARES>;
+ reset-names = "psgmii_rst";
+ mdio = <&mdio>;
+ psgmii-ethphy = <&psgmiiphy>;
+
+ status = "disabled";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 { /* MAC0 */
+ reg = <0>;
+ label = "cpu";
+ ethernet = <&gmac>;
+ phy-mode = "internal";
+
+ fixed-link {
+ speed = <1000>;
+ full-duplex;
+ pause;
+ asym-pause;
+ };
+ };
+
+ swport1: port@1 { /* MAC1 */
+ reg = <1>;
+ label = "lan1";
+ phy-handle = <&ethphy0>;
+ phy-mode = "psgmii";
+
+ status = "disabled";
+ };
+
+ swport2: port@2 { /* MAC2 */
+ reg = <2>;
+ label = "lan2";
+ phy-handle = <&ethphy1>;
+ phy-mode = "psgmii";
+
+ status = "disabled";
+ };
+
+ swport3: port@3 { /* MAC3 */
+ reg = <3>;
+ label = "lan3";
+ phy-handle = <&ethphy2>;
+ phy-mode = "psgmii";
+
+ status = "disabled";
+ };
+
+ swport4: port@4 { /* MAC4 */
+ reg = <4>;
+ label = "lan4";
+ phy-handle = <&ethphy3>;
+ phy-mode = "psgmii";
+
+ status = "disabled";
+ };
+
+ swport5: port@5 { /* MAC5 */
+ reg = <5>;
+ label = "wan";
+ phy-handle = <&ethphy4>;
+ phy-mode = "psgmii";
+
+ status = "disabled";
+ };
+ };
+ };
+
gmac: ethernet@c080000 {
compatible = "qcom,ipq4019-ess-edma";
reg = <0xc080000 0x8000>;