[PATCH 0/1] Introduce Lemans EVK Peripheral Mezzanine

[PATCH 0/1] Introduce Lemans EVK Peripheral Mezzanine

[Umang Chheda]

Introduce device tree support for the Mezzanine peripheral expansion
card used with the Qualcomm Lemans Evaluation Kit (EVK).

The Lemans Mezzanine is an additional add-on card which can be stacked
on top of Lemans-evk board to extend peripheral capabilities of
Lemans-evk used for industrial applications.

It connects via expansion headers on the lemans-evk and provides
following peripherals :
- 4x Type A USB ports in host mode.
- TC9563 PCIe switch, which has following three downstream ports (DSP) :
   - 1st DSP connects M.2 E-key connector for connecting WLAN endpoints.
   - 2nd DSP connect M.2 B-key connector for connecting cellular modems.
   - 3rd DSP with support for Dual Ethernet ports.
- eMMC.
- Additional 2.5GbE Ethernet PHY connected to native EMAC with support
  for
  MAC Address configuration via NVMEM.
- EEPROM.
- LVDS Display.
- 2*mini DP.

Umang Chheda (1):
  arm64: dts: qcom: lemans-evk: Add Mezzanine

 arch/arm64/boot/dts/qcom/Makefile             |   4 +
 .../boot/dts/qcom/lemans-evk-mezzanine.dtso   | 301 ++++++++++++++++++
 2 files changed, 305 insertions(+)
 create mode 100644 arch/arm64/boot/dts/qcom/lemans-evk-mezzanine.dtso

--
2.34.1

[PATCH 1/1] arm64: dts: qcom: lemans-evk: Add Mezzanine

[Umang Chheda]

The Mezzanine is an hardware expansion add-on board designed
to be stacked on top of Lemans EVK.

It has following peripherals :

- 4x Type A USB ports in host mode.
- TC9563 PCIe switch, which has following three downstream ports (DSP) :
   - 1st DSP connects M.2 E-key connector for connecting WLAN endpoints.
   - 2nd DSP connects M.2 B-key connector for connecting cellular modems.
   - 3rd DSP with support for Dual Ethernet ports.
- eMMC.
- Additional 2.5GbE Ethernet PHY connected to native EMAC with support for
  MAC Address configuration via NVMEM.
- EEPROM.
- LVDS Display.
- 2*mini DP.

Add support for following peripherals :
- TC9563 PCIe Switch.
- Additional 2.5GbE Ethernet Port.
- EEPROM.

Written with inputs from :
    Mohd Ayaan Anwar <mohd.anwar@oss.qualcomm.com> - Ethernet.
    Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com> - PCIe
    Monish Chunara <monish.chunara@oss.qualcomm.com> - EEPROM.

Signed-off-by: Umang Chheda <umang.chheda@oss.qualcomm.com>
---
 arch/arm64/boot/dts/qcom/Makefile             |   4 +
 .../boot/dts/qcom/lemans-evk-mezzanine.dtso   | 301 ++++++++++++++++++
 2 files changed, 305 insertions(+)
 create mode 100644 arch/arm64/boot/dts/qcom/lemans-evk-mezzanine.dtso

diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index f80b5d9cf1e8..79449004adfd 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -43,6 +43,10 @@ dtb-$(CONFIG_ARCH_QCOM)	+= lemans-evk-camera.dtb
 lemans-evk-el2-dtbs := lemans-evk.dtb lemans-el2.dtbo

 dtb-$(CONFIG_ARCH_QCOM)	+= lemans-evk-el2.dtb
+
+lemans-evk-mezzanine-dtbs	:= lemans-evk.dtb lemans-evk-mezzanine.dtbo
+
+dtb-$(CONFIG_ARCH_QCOM)	+= lemans-evk-mezzanine.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= milos-fairphone-fp6.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= monaco-evk.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8216-samsung-fortuna3g.dtb
diff --git a/arch/arm64/boot/dts/qcom/lemans-evk-mezzanine.dtso b/arch/arm64/boot/dts/qcom/lemans-evk-mezzanine.dtso
new file mode 100644
index 000000000000..a0dc6daec754
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/lemans-evk-mezzanine.dtso
@@ -0,0 +1,301 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+&{/} {
+	model = "Qualcomm Technologies, Inc. Lemans-evk Mezzanine";
+
+	vreg_sys_pwr: regulator-vreg-sys-pwr {
+		compatible = "regulator-fixed";
+		regulator-name = "VREG_SYS_PWR";
+
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <24000000>;
+		regulator-max-microvolt = <24000000>;
+	};
+
+	vreg_4p2: regulator-vreg-4p2 {
+		compatible = "regulator-fixed";
+		regulator-name = "VREG_4P2";
+
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <4200000>;
+		regulator-max-microvolt = <4200000>;
+
+		vin-supply = <&vreg_sys_pwr>;
+	};
+
+	vreg_1p8: regulator-vreg-1p8 {
+		compatible = "regulator-fixed";
+		regulator-name = "VREG_1P8";
+
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+
+		vin-supply = <&vreg_4p2>;
+	};
+
+	vreg_3p3: regulator-vreg-3p3 {
+		compatible = "regulator-fixed";
+		regulator-name = "VREG_3P3";
+
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+
+		vin-supply = <&vreg_4p2>;
+	};
+
+	vreg_0p9: regulator-vreg-0p9 {
+		compatible = "regulator-fixed";
+		regulator-name = "VREG_0P9";
+
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <900000>;
+		regulator-max-microvolt = <900000>;
+
+		vin-supply = <&vreg_3p3>;
+	};
+};
+
+&ethernet1 {
+	phy-handle = <&hsgmii_phy1>;
+	phy-mode = "2500base-x";
+
+	pinctrl-0 = <&ethernet1_default>;
+	pinctrl-names = "default";
+
+	snps,mtl-rx-config = <&mtl_rx_setup1>;
+	snps,mtl-tx-config = <&mtl_tx_setup1>;
+
+	nvmem-cells = <&mac_addr1>;
+	nvmem-cell-names = "mac-address";
+
+	status = "okay";
+
+	mdio {
+		compatible = "snps,dwmac-mdio";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		hsgmii_phy1: ethernet-phy@18 {
+			compatible = "ethernet-phy-id004d.d101";
+			reg = <0x18>;
+			reset-gpios = <&pmm8654au_2_gpios 9 GPIO_ACTIVE_LOW>;
+			reset-assert-us = <11000>;
+			reset-deassert-us = <70000>;
+		};
+	};
+
+	mtl_rx_setup1: rx-queues-config {
+		snps,rx-queues-to-use = <4>;
+		snps,rx-sched-sp;
+
+		queue0 {
+			snps,dcb-algorithm;
+			snps,map-to-dma-channel = <0x0>;
+			snps,route-up;
+			snps,priority = <0x1>;
+		};
+
+		queue1 {
+			snps,dcb-algorithm;
+			snps,map-to-dma-channel = <0x1>;
+			snps,route-ptp;
+		};
+
+		queue2 {
+			snps,avb-algorithm;
+			snps,map-to-dma-channel = <0x2>;
+			snps,route-avcp;
+		};
+
+		queue3 {
+			snps,avb-algorithm;
+			snps,map-to-dma-channel = <0x3>;
+			snps,priority = <0xc>;
+		};
+	};
+
+	mtl_tx_setup1: tx-queues-config {
+		snps,tx-queues-to-use = <4>;
+
+		queue0 {
+			snps,dcb-algorithm;
+		};
+
+		queue1 {
+			snps,dcb-algorithm;
+		};
+
+		queue2 {
+			snps,avb-algorithm;
+			snps,send_slope = <0x1000>;
+			snps,idle_slope = <0x1000>;
+			snps,high_credit = <0x3e800>;
+			snps,low_credit = <0xffc18000>;
+		};
+
+		queue3 {
+			snps,avb-algorithm;
+			snps,send_slope = <0x1000>;
+			snps,idle_slope = <0x1000>;
+			snps,high_credit = <0x3e800>;
+			snps,low_credit = <0xffc18000>;
+		};
+	};
+};
+
+&i2c18 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	eeprom@52 {
+		compatible = "giantec,gt24c256c", "atmel,24c256";
+		reg = <0x52>;
+		pagesize = <64>;
+
+		nvmem-layout {
+			compatible = "fixed-layout";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			mac_addr1: mac-addr@0 {
+				reg = <0x0 0x6>;
+			};
+		};
+	};
+};
+
+&pcie0 {
+	iommu-map = <0x0 &pcie_smmu 0x0 0x1>,
+		    <0x100 &pcie_smmu 0x1 0x1>,
+		    <0x208 &pcie_smmu 0x2 0x1>,
+		    <0x210 &pcie_smmu 0x3 0x1>,
+		    <0x218 &pcie_smmu 0x4 0x1>,
+		    <0x300 &pcie_smmu 0x5 0x1>,
+		    <0x400 &pcie_smmu 0x6 0x1>,
+		    <0x500 &pcie_smmu 0x7 0x1>,
+		    <0x501 &pcie_smmu 0x8 0x1>;
+};
+
+&pcieport0 {
+	#address-cells = <3>;
+	#size-cells = <2>;
+
+	pcie@0,0 {
+		compatible = "pci1179,0623";
+		reg = <0x10000 0x0 0x0 0x0 0x0>;
+		#address-cells = <3>;
+		#size-cells = <2>;
+
+		device_type = "pci";
+		ranges;
+		bus-range = <0x2 0xff>;
+
+		vddc-supply = <&vreg_0p9>;
+		vdd18-supply = <&vreg_1p8>;
+		vdd09-supply = <&vreg_0p9>;
+		vddio1-supply = <&vreg_1p8>;
+		vddio2-supply = <&vreg_1p8>;
+		vddio18-supply = <&vreg_1p8>;
+
+		i2c-parent = <&i2c18 0x77>;
+
+		resx-gpios = <&tlmm 140 GPIO_ACTIVE_LOW>;
+
+		pinctrl-0 = <&tc9563_resx_n>;
+		pinctrl-names = "default";
+
+		pcie@1,0 {
+			reg = <0x20800 0x0 0x0 0x0 0x0>;
+			#address-cells = <3>;
+			#size-cells = <2>;
+
+			device_type = "pci";
+			ranges;
+			bus-range = <0x3 0xff>;
+		};
+
+		pcie@2,0 {
+			reg = <0x21000 0x0 0x0 0x0 0x0>;
+			#address-cells = <3>;
+			#size-cells = <2>;
+
+			device_type = "pci";
+			ranges;
+			bus-range = <0x4 0xff>;
+		};
+
+		pcie@3,0 {
+			reg = <0x21800 0x0 0x0 0x0 0x0>;
+			#address-cells = <3>;
+			#size-cells = <2>;
+			device_type = "pci";
+			ranges;
+			bus-range = <0x5 0xff>;
+
+			pci@0,0 {
+				reg = <0x50000 0x0 0x0 0x0 0x0>;
+				#address-cells = <3>;
+				#size-cells = <2>;
+				device_type = "pci";
+				ranges;
+			};
+
+			pci@0,1 {
+				reg = <0x50100 0x0 0x0 0x0 0x0>;
+				#address-cells = <3>;
+				#size-cells = <2>;
+				device_type = "pci";
+				ranges;
+			};
+		};
+	};
+};
+
+&serdes1 {
+	phy-supply = <&vreg_l5a>;
+
+	status = "okay";
+};
+
+&tlmm {
+	ethernet1_default: ethernet1-default-state {
+		ethernet1_mdc: ethernet1-mdc-pins {
+			pins = "gpio20";
+			function = "emac1_mdc";
+			drive-strength = <16>;
+			bias-pull-up;
+		};
+
+		ethernet1_mdio: ethernet1-mdio-pins {
+			pins = "gpio21";
+			function = "emac1_mdio";
+			drive-strength = <16>;
+			bias-pull-up;
+		};
+	};
+
+	tc9563_resx_n: tc9563-resx-state {
+		pins = "gpio140";
+		function = "gpio";
+
+		bias-disable;
+		input-disable;
+		output-enable;
+		power-source = <0>;
+	};
+};
--
2.34.1

Re: [PATCH 1/1] arm64: dts: qcom: lemans-evk: Add Mezzanine

[Konrad Dybcio]

On 1/29/26 6:28 PM, Umang Chheda wrote:
> The Mezzanine is an hardware expansion add-on board designed
> to be stacked on top of Lemans EVK.
> 
> It has following peripherals :
> 
> - 4x Type A USB ports in host mode.
> - TC9563 PCIe switch, which has following three downstream ports (DSP) :
>    - 1st DSP connects M.2 E-key connector for connecting WLAN endpoints.
>    - 2nd DSP connects M.2 B-key connector for connecting cellular modems.
>    - 3rd DSP with support for Dual Ethernet ports.
> - eMMC.
> - Additional 2.5GbE Ethernet PHY connected to native EMAC with support for
>   MAC Address configuration via NVMEM.
> - EEPROM.
> - LVDS Display.
> - 2*mini DP.
> 
> Add support for following peripherals :
> - TC9563 PCIe Switch.
> - Additional 2.5GbE Ethernet Port.
> - EEPROM.
> 
> Written with inputs from :
>     Mohd Ayaan Anwar <mohd.anwar@oss.qualcomm.com> - Ethernet.
>     Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com> - PCIe
>     Monish Chunara <monish.chunara@oss.qualcomm.com> - EEPROM.
> 
> Signed-off-by: Umang Chheda <umang.chheda@oss.qualcomm.com>
> ---
>  arch/arm64/boot/dts/qcom/Makefile             |   4 +
>  .../boot/dts/qcom/lemans-evk-mezzanine.dtso   | 301 ++++++++++++++++++
>  2 files changed, 305 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/qcom/lemans-evk-mezzanine.dtso
> 
> diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
> index f80b5d9cf1e8..79449004adfd 100644
> --- a/arch/arm64/boot/dts/qcom/Makefile
> +++ b/arch/arm64/boot/dts/qcom/Makefile
> @@ -43,6 +43,10 @@ dtb-$(CONFIG_ARCH_QCOM)	+= lemans-evk-camera.dtb
>  lemans-evk-el2-dtbs := lemans-evk.dtb lemans-el2.dtbo
> 
>  dtb-$(CONFIG_ARCH_QCOM)	+= lemans-evk-el2.dtb
> +
> +lemans-evk-mezzanine-dtbs	:= lemans-evk.dtb lemans-evk-mezzanine.dtbo
> +
> +dtb-$(CONFIG_ARCH_QCOM)	+= lemans-evk-mezzanine.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= milos-fairphone-fp6.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= monaco-evk.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= msm8216-samsung-fortuna3g.dtb
> diff --git a/arch/arm64/boot/dts/qcom/lemans-evk-mezzanine.dtso b/arch/arm64/boot/dts/qcom/lemans-evk-mezzanine.dtso
> new file mode 100644
> index 000000000000..a0dc6daec754
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/lemans-evk-mezzanine.dtso
> @@ -0,0 +1,301 @@
> +// SPDX-License-Identifier: BSD-3-Clause
> +/*
> + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
> + */
> +
> +/dts-v1/;
> +/plugin/;
> +
> +#include <dt-bindings/gpio/gpio.h>
> +
> +&{/} {
> +	model = "Qualcomm Technologies, Inc. Lemans-evk Mezzanine";
> +
> +	vreg_sys_pwr: regulator-vreg-sys-pwr {
> +		compatible = "regulator-fixed";
> +		regulator-name = "VREG_SYS_PWR";
> +
> +		regulator-always-on;
> +		regulator-boot-on;

nit: usually we put these at the end

[...]

> +&tlmm {
> +	ethernet1_default: ethernet1-default-state {
> +		ethernet1_mdc: ethernet1-mdc-pins {

You can drop the labels for these inner entries, as you never
reference them

Konrad

Re: [PATCH 1/1] arm64: dts: qcom: lemans-evk: Add Mezzanine

[Konrad Dybcio]

On 1/29/26 6:28 PM, Umang Chheda wrote:
> The Mezzanine is an hardware expansion add-on board designed
> to be stacked on top of Lemans EVK.

[...]

> +&ethernet1 {
> +	phy-handle = <&hsgmii_phy1>;
> +	phy-mode = "2500base-x";

+Andrew could you please take a look at the eth setup?

Konrad

> +
> +	pinctrl-0 = <&ethernet1_default>;
> +	pinctrl-names = "default";
> +
> +	snps,mtl-rx-config = <&mtl_rx_setup1>;
> +	snps,mtl-tx-config = <&mtl_tx_setup1>;
> +
> +	nvmem-cells = <&mac_addr1>;
> +	nvmem-cell-names = "mac-address";
> +
> +	status = "okay";
> +
> +	mdio {
> +		compatible = "snps,dwmac-mdio";
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		hsgmii_phy1: ethernet-phy@18 {
> +			compatible = "ethernet-phy-id004d.d101";
> +			reg = <0x18>;
> +			reset-gpios = <&pmm8654au_2_gpios 9 GPIO_ACTIVE_LOW>;
> +			reset-assert-us = <11000>;
> +			reset-deassert-us = <70000>;
> +		};
> +	};
> +
> +	mtl_rx_setup1: rx-queues-config {
> +		snps,rx-queues-to-use = <4>;
> +		snps,rx-sched-sp;
> +
> +		queue0 {
> +			snps,dcb-algorithm;
> +			snps,map-to-dma-channel = <0x0>;
> +			snps,route-up;
> +			snps,priority = <0x1>;
> +		};
> +
> +		queue1 {
> +			snps,dcb-algorithm;
> +			snps,map-to-dma-channel = <0x1>;
> +			snps,route-ptp;
> +		};
> +
> +		queue2 {
> +			snps,avb-algorithm;
> +			snps,map-to-dma-channel = <0x2>;
> +			snps,route-avcp;
> +		};
> +
> +		queue3 {
> +			snps,avb-algorithm;
> +			snps,map-to-dma-channel = <0x3>;
> +			snps,priority = <0xc>;
> +		};
> +	};
> +
> +	mtl_tx_setup1: tx-queues-config {
> +		snps,tx-queues-to-use = <4>;
> +
> +		queue0 {
> +			snps,dcb-algorithm;
> +		};
> +
> +		queue1 {
> +			snps,dcb-algorithm;
> +		};
> +
> +		queue2 {
> +			snps,avb-algorithm;
> +			snps,send_slope = <0x1000>;
> +			snps,idle_slope = <0x1000>;
> +			snps,high_credit = <0x3e800>;
> +			snps,low_credit = <0xffc18000>;
> +		};
> +
> +		queue3 {
> +			snps,avb-algorithm;
> +			snps,send_slope = <0x1000>;
> +			snps,idle_slope = <0x1000>;
> +			snps,high_credit = <0x3e800>;
> +			snps,low_credit = <0xffc18000>;
> +		};
> +	};
> +};
> +
> +&i2c18 {
> +	#address-cells = <1>;
> +	#size-cells = <0>;
> +
> +	eeprom@52 {
> +		compatible = "giantec,gt24c256c", "atmel,24c256";
> +		reg = <0x52>;
> +		pagesize = <64>;
> +
> +		nvmem-layout {
> +			compatible = "fixed-layout";
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +
> +			mac_addr1: mac-addr@0 {
> +				reg = <0x0 0x6>;
> +			};
> +		};
> +	};
> +};
> +
> +&pcie0 {
> +	iommu-map = <0x0 &pcie_smmu 0x0 0x1>,
> +		    <0x100 &pcie_smmu 0x1 0x1>,
> +		    <0x208 &pcie_smmu 0x2 0x1>,
> +		    <0x210 &pcie_smmu 0x3 0x1>,
> +		    <0x218 &pcie_smmu 0x4 0x1>,
> +		    <0x300 &pcie_smmu 0x5 0x1>,
> +		    <0x400 &pcie_smmu 0x6 0x1>,
> +		    <0x500 &pcie_smmu 0x7 0x1>,
> +		    <0x501 &pcie_smmu 0x8 0x1>;
> +};
> +
> +&pcieport0 {
> +	#address-cells = <3>;
> +	#size-cells = <2>;
> +
> +	pcie@0,0 {
> +		compatible = "pci1179,0623";
> +		reg = <0x10000 0x0 0x0 0x0 0x0>;
> +		#address-cells = <3>;
> +		#size-cells = <2>;
> +
> +		device_type = "pci";
> +		ranges;
> +		bus-range = <0x2 0xff>;
> +
> +		vddc-supply = <&vreg_0p9>;
> +		vdd18-supply = <&vreg_1p8>;
> +		vdd09-supply = <&vreg_0p9>;
> +		vddio1-supply = <&vreg_1p8>;
> +		vddio2-supply = <&vreg_1p8>;
> +		vddio18-supply = <&vreg_1p8>;
> +
> +		i2c-parent = <&i2c18 0x77>;
> +
> +		resx-gpios = <&tlmm 140 GPIO_ACTIVE_LOW>;
> +
> +		pinctrl-0 = <&tc9563_resx_n>;
> +		pinctrl-names = "default";
> +
> +		pcie@1,0 {
> +			reg = <0x20800 0x0 0x0 0x0 0x0>;
> +			#address-cells = <3>;
> +			#size-cells = <2>;
> +
> +			device_type = "pci";
> +			ranges;
> +			bus-range = <0x3 0xff>;
> +		};
> +
> +		pcie@2,0 {
> +			reg = <0x21000 0x0 0x0 0x0 0x0>;
> +			#address-cells = <3>;
> +			#size-cells = <2>;
> +
> +			device_type = "pci";
> +			ranges;
> +			bus-range = <0x4 0xff>;
> +		};
> +
> +		pcie@3,0 {
> +			reg = <0x21800 0x0 0x0 0x0 0x0>;
> +			#address-cells = <3>;
> +			#size-cells = <2>;
> +			device_type = "pci";
> +			ranges;
> +			bus-range = <0x5 0xff>;
> +
> +			pci@0,0 {
> +				reg = <0x50000 0x0 0x0 0x0 0x0>;
> +				#address-cells = <3>;
> +				#size-cells = <2>;
> +				device_type = "pci";
> +				ranges;
> +			};
> +
> +			pci@0,1 {
> +				reg = <0x50100 0x0 0x0 0x0 0x0>;
> +				#address-cells = <3>;
> +				#size-cells = <2>;
> +				device_type = "pci";
> +				ranges;
> +			};
> +		};
> +	};
> +};
> +
> +&serdes1 {
> +	phy-supply = <&vreg_l5a>;
> +
> +	status = "okay";
> +};
> +
> +&tlmm {
> +	ethernet1_default: ethernet1-default-state {
> +		ethernet1_mdc: ethernet1-mdc-pins {
> +			pins = "gpio20";
> +			function = "emac1_mdc";
> +			drive-strength = <16>;
> +			bias-pull-up;
> +		};
> +
> +		ethernet1_mdio: ethernet1-mdio-pins {
> +			pins = "gpio21";
> +			function = "emac1_mdio";
> +			drive-strength = <16>;
> +			bias-pull-up;
> +		};
> +	};
> +
> +	tc9563_resx_n: tc9563-resx-state {
> +		pins = "gpio140";
> +		function = "gpio";
> +
> +		bias-disable;
> +		input-disable;
> +		output-enable;
> +		power-source = <0>;
> +	};
> +};
> --
> 2.34.1
> 
> 

Re: [PATCH 1/1] arm64: dts: qcom: lemans-evk: Add Mezzanine

[Andrew Lunn]

On Fri, Jan 30, 2026 at 11:53:09AM +0100, Konrad Dybcio wrote:
> On 1/29/26 6:28 PM, Umang Chheda wrote:
> > The Mezzanine is an hardware expansion add-on board designed
> > to be stacked on top of Lemans EVK.
> 
> [...]
> 
> > +&ethernet1 {
> > +	phy-handle = <&hsgmii_phy1>;
> > +	phy-mode = "2500base-x";
> 
> +Andrew could you please take a look at the eth setup?

Looks reasonable.

      Andrew

      

Re: [PATCH 1/1] arm64: dts: qcom: lemans-evk: Add Mezzanine

[Konrad Dybcio]

On 1/30/26 9:11 PM, Andrew Lunn wrote:
> On Fri, Jan 30, 2026 at 11:53:09AM +0100, Konrad Dybcio wrote:
>> On 1/29/26 6:28 PM, Umang Chheda wrote:
>>> The Mezzanine is an hardware expansion add-on board designed
>>> to be stacked on top of Lemans EVK.
>>
>> [...]
>>
>>> +&ethernet1 {
>>> +	phy-handle = <&hsgmii_phy1>;
>>> +	phy-mode = "2500base-x";
>>
>> +Andrew could you please take a look at the eth setup?
> 
> Looks reasonable.

Thanks!

Konrad

Re: [PATCH 1/1] arm64: dts: qcom: lemans-evk: Add Mezzanine

[Umang Chheda]

Hello Konrad,

On 1/30/2026 4:21 PM, Konrad Dybcio wrote:
> On 1/29/26 6:28 PM, Umang Chheda wrote:
>> The Mezzanine is an hardware expansion add-on board designed
>> to be stacked on top of Lemans EVK.
>>
>> It has following peripherals :
>>
>> - 4x Type A USB ports in host mode.
>> - TC9563 PCIe switch, which has following three downstream ports (DSP) :
>>    - 1st DSP connects M.2 E-key connector for connecting WLAN endpoints.
>>    - 2nd DSP connects M.2 B-key connector for connecting cellular modems.
>>    - 3rd DSP with support for Dual Ethernet ports.
>> - eMMC.
>> - Additional 2.5GbE Ethernet PHY connected to native EMAC with support for
>>   MAC Address configuration via NVMEM.
>> - EEPROM.
>> - LVDS Display.
>> - 2*mini DP.
>>
>> Add support for following peripherals :
>> - TC9563 PCIe Switch.
>> - Additional 2.5GbE Ethernet Port.
>> - EEPROM.
>>
>> Written with inputs from :
>>     Mohd Ayaan Anwar <mohd.anwar@oss.qualcomm.com> - Ethernet.
>>     Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com> - PCIe
>>     Monish Chunara <monish.chunara@oss.qualcomm.com> - EEPROM.
>>
>> Signed-off-by: Umang Chheda <umang.chheda@oss.qualcomm.com>
>> ---
>>  arch/arm64/boot/dts/qcom/Makefile             |   4 +
>>  .../boot/dts/qcom/lemans-evk-mezzanine.dtso   | 301 ++++++++++++++++++
>>  2 files changed, 305 insertions(+)
>>  create mode 100644 arch/arm64/boot/dts/qcom/lemans-evk-mezzanine.dtso
>>
>> diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
>> index f80b5d9cf1e8..79449004adfd 100644
>> --- a/arch/arm64/boot/dts/qcom/Makefile
>> +++ b/arch/arm64/boot/dts/qcom/Makefile
>> @@ -43,6 +43,10 @@ dtb-$(CONFIG_ARCH_QCOM)	+= lemans-evk-camera.dtb
>>  lemans-evk-el2-dtbs := lemans-evk.dtb lemans-el2.dtbo
>>
>>  dtb-$(CONFIG_ARCH_QCOM)	+= lemans-evk-el2.dtb
>> +
>> +lemans-evk-mezzanine-dtbs	:= lemans-evk.dtb lemans-evk-mezzanine.dtbo
>> +
>> +dtb-$(CONFIG_ARCH_QCOM)	+= lemans-evk-mezzanine.dtb
>>  dtb-$(CONFIG_ARCH_QCOM)	+= milos-fairphone-fp6.dtb
>>  dtb-$(CONFIG_ARCH_QCOM)	+= monaco-evk.dtb
>>  dtb-$(CONFIG_ARCH_QCOM)	+= msm8216-samsung-fortuna3g.dtb
>> diff --git a/arch/arm64/boot/dts/qcom/lemans-evk-mezzanine.dtso b/arch/arm64/boot/dts/qcom/lemans-evk-mezzanine.dtso
>> new file mode 100644
>> index 000000000000..a0dc6daec754
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/qcom/lemans-evk-mezzanine.dtso
>> @@ -0,0 +1,301 @@
>> +// SPDX-License-Identifier: BSD-3-Clause
>> +/*
>> + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
>> + */
>> +
>> +/dts-v1/;
>> +/plugin/;
>> +
>> +#include <dt-bindings/gpio/gpio.h>
>> +
>> +&{/} {
>> +	model = "Qualcomm Technologies, Inc. Lemans-evk Mezzanine";
>> +
>> +	vreg_sys_pwr: regulator-vreg-sys-pwr {
>> +		compatible = "regulator-fixed";
>> +		regulator-name = "VREG_SYS_PWR";
>> +
>> +		regulator-always-on;
>> +		regulator-boot-on;
> nit: usually we put these at the end
Ack
>
> [...]
>
>> +&tlmm {
>> +	ethernet1_default: ethernet1-default-state {
>> +		ethernet1_mdc: ethernet1-mdc-pins {
> You can drop the labels for these inner entries, as you never
> reference them

Ack

>
> Konrad

Thanks,
Umang