[PATCH v6 7/7] arm64: dts: ti: hummingboard-t: add overlays for m.2 pci-e and usb-3

From: Josua Mayer <josua@solid-run.com>
To: Nishanth Menon <nm@ti.com>, Vignesh Raghavendra <vigneshr@ti.com>,
	 Tero Kristo <kristo@kernel.org>,
	Rob Herring <robh+dt@kernel.org>,
	 Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	 Conor Dooley <conor+dt@kernel.org>,
	Alessandro Zummo <a.zummo@towertech.it>,
	 Alexandre Belloni <alexandre.belloni@bootlin.com>,
	 Jonathan Cameron <jic23@kernel.org>,
	Lars-Peter Clausen <lars@metafoo.de>,
	 Eugene Zaikonnikov <ez@norophonic.com>,
	 Tudor Ambarus <tudor.ambarus@linaro.org>,
	 Pratyush Yadav <pratyush@kernel.org>,
	Michael Walle <mwalle@kernel.org>,
	 Miquel Raynal <miquel.raynal@bootlin.com>,
	 Richard Weinberger <richard@nod.at>
Cc: Yazan Shhady <yazan.shhady@solid-run.com>,
	 linux-arm-kernel@lists.infradead.org,
	devicetree@vger.kernel.org,  linux-kernel@vger.kernel.org,
	linux-rtc@vger.kernel.org,  linux-iio@vger.kernel.org,
	Rob Herring <robh@kernel.org>,
	 linux-mtd@lists.infradead.org, Josua Mayer <josua@solid-run.com>
Subject: [PATCH v6 7/7] arm64: dts: ti: hummingboard-t: add overlays for m.2 pci-e and usb-3
Date: Mon, 12 Feb 2024 18:38:14 +0100	[thread overview]
Message-ID: <20240212-add-am64-som-v6-7-b59edb2bc8c3@solid-run.com> (raw)
In-Reply-To: <20240212-add-am64-som-v6-0-b59edb2bc8c3@solid-run.com>

HummingBoard-T features two M.2 connectors labeled "M1" and "M2".
The single SerDes lane of the SoC can be routed to either M1 pci-e
signals, or M2 usb-3 signals by a gpio-controlled mux.

Add overlays for each configuration.

Signed-off-by: Josua Mayer <josua@solid-run.com>
---
 arch/arm64/boot/dts/ti/Makefile                    |  6 +++
 .../boot/dts/ti/k3-am642-hummingboard-t-pcie.dtso  | 45 ++++++++++++++++++++++
 .../boot/dts/ti/k3-am642-hummingboard-t-usb3.dtso  | 44 +++++++++++++++++++++
 3 files changed, 95 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index bd73ce06acba..cd12720638c7 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -37,8 +37,14 @@ dtb-$(CONFIG_ARCH_K3) += k3-am62x-sk-csi2-imx219.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-am62x-sk-hdmi-audio.dtbo
 
 # Boards with AM64x SoC
+k3-am642-hummingboard-t-pcie-dtbs := \
+	k3-am642-hummingboard-t.dtb k3-am642-hummingboard-t-pcie.dtbo
+k3-am642-hummingboard-t-usb3-dtbs := \
+	k3-am642-hummingboard-t.dtb k3-am642-hummingboard-t-usb3.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-am642-evm.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am642-hummingboard-t.dtb
+dtb-$(CONFIG_ARCH_K3) += k3-am642-hummingboard-t-pcie.dtb
+dtb-$(CONFIG_ARCH_K3) += k3-am642-hummingboard-t-usb3.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am642-phyboard-electra-rdk.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am642-sk.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am642-tqma64xxl-mbax4xxl.dtb
diff --git a/arch/arm64/boot/dts/ti/k3-am642-hummingboard-t-pcie.dtso b/arch/arm64/boot/dts/ti/k3-am642-hummingboard-t-pcie.dtso
new file mode 100644
index 000000000000..bd9a5caf20da
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am642-hummingboard-t-pcie.dtso
@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2023 Josua Mayer <josua@solid-run.com>
+ *
+ * Overlay for SolidRun AM642 HummingBoard-T to enable PCI-E.
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/phy/phy.h>
+
+#include "k3-serdes.h"
+
+&pcie0_rc {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie0_default_pins>;
+	reset-gpios = <&main_gpio1 15 GPIO_ACTIVE_HIGH>;
+	phys = <&serdes0_link>;
+	phy-names = "pcie-phy";
+	num-lanes = <1>;
+	status = "okay";
+};
+
+&serdes0 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	serdes0_link: phy@0 {
+		reg = <0>;
+		cdns,num-lanes = <1>;
+		cdns,phy-type = <PHY_TYPE_PCIE>;
+		#phy-cells = <0>;
+		resets = <&serdes_wiz0 1>;
+	};
+};
+
+&serdes_ln_ctrl {
+	idle-states = <AM64_SERDES0_LANE0_PCIE0>;
+};
+
+&serdes_mux {
+	idle-state = <1>;
+};
diff --git a/arch/arm64/boot/dts/ti/k3-am642-hummingboard-t-usb3.dtso b/arch/arm64/boot/dts/ti/k3-am642-hummingboard-t-usb3.dtso
new file mode 100644
index 000000000000..ffcc3bd3c7bc
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am642-hummingboard-t-usb3.dtso
@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2023 Josua Mayer <josua@solid-run.com>
+ *
+ * Overlay for SolidRun AM642 HummingBoard-T to enable USB-3.1.
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/phy/phy.h>
+
+#include "k3-serdes.h"
+
+&serdes0 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	serdes0_link: phy@0 {
+		reg = <0>;
+		cdns,num-lanes = <1>;
+		cdns,phy-type = <PHY_TYPE_USB3>;
+		#phy-cells = <0>;
+		resets = <&serdes_wiz0 1>;
+	};
+};
+
+&serdes_ln_ctrl {
+	idle-states = <AM64_SERDES0_LANE0_USB>;
+};
+
+&serdes_mux {
+	idle-state = <0>;
+};
+
+&usbss0 {
+	/delete-property/ ti,usb2-only;
+};
+
+&usb0 {
+	maximum-speed = "super-speed";
+	phys = <&serdes0_link>;
+	phy-names = "cdns3,usb3-phy";
+};

-- 
2.35.3

