[v3,4/4] arm64: dts: freescale: Add support for LX2162 SoM & Clearfog Board

  Add support for the SolidRun LX2162A System on Module (SoM), and the
Clearfog evaluation board.

The SoM has few software-controllable features:
- AR8035 Ethernet PHY
- eMMC
- SPI Flash
- fan controller
- various eeproms

The Clearfog evaluation board provides:
- microSD connector
- USB-A
- 2x 10Gbps SFP+
- 2x 25Gbps SFP+ with a retimer
- 8x 2.5Gbps RJ45
- 2x mPCI (assembly option / disables 2xRJ45)

The 8x RJ45 ports are connected with an 8-port PHY: Marvell 88E2580
supporting up to 5Gbps, while SoC and magnetics are limited to 2.5Gbps.

However 2500 speed is untested due to documentation and drivier
limitations. To avoid confusion the phy nodes have been explicitly
limited to 1000 for now.

The PCI nodes are disabled, but explicitly added to mark that this board
can have pci.
It is expected that the bootloader will patch the status property
"okay" and disable 2x RJ45 ports, according to active serdes configuration.

Signed-off-by: Josua Mayer <josua@solid-run.com>
---
V1 -> V2: reordered "compatible" and "reg" properties
V1 -> V2: replaced chip-specific DT node names with generic ones
V1 -> V2: removed dead code from fspi node
V2 -> V3: dropped deprecated address-cells, address-size props from flash node

 arch/arm64/boot/dts/freescale/Makefile        |   1 +
 .../dts/freescale/fsl-lx2162a-clearfog.dts    | 371 ++++++++++++++++++
 .../dts/freescale/fsl-lx2162a-sr-som.dtsi     |  73 ++++
 3 files changed, 445 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/fsl-lx2162a-clearfog.dts
 create mode 100644 arch/arm64/boot/dts/freescale/fsl-lx2162a-sr-som.dtsi
  

On Mon, Jun 19, 2023 at 12:00:26PM +0300, Josua Mayer wrote:
> Add support for the SolidRun LX2162A System on Module (SoM), and the
> Clearfog evaluation board.
> 
> The SoM has few software-controllable features:
> - AR8035 Ethernet PHY
> - eMMC
> - SPI Flash
> - fan controller
> - various eeproms
> 
> The Clearfog evaluation board provides:
> - microSD connector
> - USB-A
> - 2x 10Gbps SFP+
> - 2x 25Gbps SFP+ with a retimer
> - 8x 2.5Gbps RJ45
> - 2x mPCI (assembly option / disables 2xRJ45)
> 
> The 8x RJ45 ports are connected with an 8-port PHY: Marvell 88E2580
> supporting up to 5Gbps, while SoC and magnetics are limited to 2.5Gbps.
> 
> However 2500 speed is untested due to documentation and drivier
> limitations. To avoid confusion the phy nodes have been explicitly
> limited to 1000 for now.
> 
> The PCI nodes are disabled, but explicitly added to mark that this board
> can have pci.
> It is expected that the bootloader will patch the status property
> "okay" and disable 2x RJ45 ports, according to active serdes configuration.
> 
> Signed-off-by: Josua Mayer <josua@solid-run.com>
> ---
> V1 -> V2: reordered "compatible" and "reg" properties
> V1 -> V2: replaced chip-specific DT node names with generic ones
> V1 -> V2: removed dead code from fspi node
> V2 -> V3: dropped deprecated address-cells, address-size props from flash node
> 
>  arch/arm64/boot/dts/freescale/Makefile        |   1 +
>  .../dts/freescale/fsl-lx2162a-clearfog.dts    | 371 ++++++++++++++++++
>  .../dts/freescale/fsl-lx2162a-sr-som.dtsi     |  73 ++++
>  3 files changed, 445 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/freescale/fsl-lx2162a-clearfog.dts
>  create mode 100644 arch/arm64/boot/dts/freescale/fsl-lx2162a-sr-som.dtsi
> 
> diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
> index ef7d17aef58f..b4fb5044d1c7 100644
> --- a/arch/arm64/boot/dts/freescale/Makefile
> +++ b/arch/arm64/boot/dts/freescale/Makefile
> @@ -34,6 +34,7 @@ dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-lx2160a-honeycomb.dtb
>  dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-lx2160a-qds.dtb
>  dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-lx2160a-rdb.dtb
>  dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-lx2162a-qds.dtb
> +dtb-$(CONFIG_ARCH_LAYERSCAPE) += fsl-lx2162a-clearfog.dtb
>  
>  fsl-ls1028a-qds-13bb-dtbs := fsl-ls1028a-qds.dtb fsl-ls1028a-qds-13bb.dtbo
>  fsl-ls1028a-qds-65bb-dtbs := fsl-ls1028a-qds.dtb fsl-ls1028a-qds-65bb.dtbo
> diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2162a-clearfog.dts b/arch/arm64/boot/dts/freescale/fsl-lx2162a-clearfog.dts
> new file mode 100644
> index 000000000000..57d8c93bfc57
> --- /dev/null
> +++ b/arch/arm64/boot/dts/freescale/fsl-lx2162a-clearfog.dts
> @@ -0,0 +1,371 @@
> +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> +//
> +// Device Tree file for LX2162A Clearfog
> +//
> +// Copyright 2023 Josua Mayer <josua@solid-run.com>
> +
> +/dts-v1/;
> +
> +#include "fsl-lx2160a.dtsi"
> +#include "fsl-lx2162a-sr-som.dtsi"
> +
> +/ {
> +	model = "SolidRun LX2162A Clearfog";
> +	compatible = "solidrun,lx2162a-clearfog", "solidrun,lx2162a-som", "fsl,lx2160a";
> +
> +	aliases {
> +		crypto = &crypto;
> +		i2c0 = &i2c0;
> +		i2c1 = &i2c2;
> +		i2c2 = &i2c4;
> +		i2c3 = &sfp_i2c0;
> +		i2c4 = &sfp_i2c1;
> +		i2c5 = &sfp_i2c2;
> +		i2c6 = &sfp_i2c3;
> +		i2c7 = &mpcie1_i2c;
> +		i2c8 = &mpcie0_i2c;
> +		i2c9 = &pcieclk_i2c;
> +		mmc0 = &esdhc0;
> +		mmc1 = &esdhc1;
> +		serial0 = &uart0;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial0:115200n8";
> +	};
> +
> +	leds {
> +		compatible = "gpio-leds";
> +
> +		led_sfp_at: led-sfp-at {
> +			gpios = <&gpio2 5 GPIO_ACTIVE_HIGH>; /* PROC_IRQ5 */
> +			default-state = "off";
> +		};
> +		led_sfp_ab: led-sfp-ab {
> +			gpios = <&gpio2 11 GPIO_ACTIVE_HIGH>; /* PROC_IRQ11 */
> +			default-state = "off";
> +		};
> +		led_sfp_bt: led-sfp-bt {
> +			gpios = <&gpio2 13 GPIO_ACTIVE_HIGH>; /* EVT1_B */
> +			default-state = "off";
> +		};
> +		led_sfp_bb: led-sfp-bb {
> +			gpios = <&gpio2 14 GPIO_ACTIVE_HIGH>; /* EVT2_B */
> +			default-state = "off";
> +		};
> +	};
> +
> +	sfp_at: sfp-at {
> +		compatible = "sff,sfp";
> +		i2c-bus = <&sfp_i2c0>;
> +		mod-def0-gpios = <&gpio2 16 GPIO_ACTIVE_LOW>; /* EVT4_B */
> +		maximum-power-milliwatt = <2000>;
> +	};
> +
> +	sfp_ab: sfp-ab {
> +		compatible = "sff,sfp";
> +		i2c-bus = <&sfp_i2c1>;
> +		mod-def0-gpios = <&gpio2 1 GPIO_ACTIVE_LOW>; /* PROC_IRQ1 */
> +		maximum-power-milliwatt = <2000>;
> +	};
> +
> +	sfp_bt: sfp-bt {
> +		compatible = "sff,sfp";
> +		i2c-bus = <&sfp_i2c2>;
> +		mod-def0-gpios = <&gpio2 10 GPIO_ACTIVE_LOW>; /* PROC_IRQ10 */
> +		maximum-power-milliwatt = <2000>;
> +	};
> +
> +	sfp_bb: sfp-bb {
> +		compatible = "sff,sfp";
> +		i2c-bus = <&sfp_i2c3>;
> +		mod-def0-gpios = <&gpio2 15 GPIO_ACTIVE_LOW>; /* EVT3_B */
> +		maximum-power-milliwatt = <2000>;
> +	};
> +};
> +
> +&i2c2 {
> +	status = "okay";
> +
> +	/* retimer@18 */
> +
> +	i2c-mux@70 {
> +		compatible = "nxp,pca9546";
> +		reg = <0x70>;
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		i2c-mux-idle-disconnect;
> +
> +		sfp_i2c0: i2c@0 {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			reg = <0>;
> +		};
> +
> +		sfp_i2c1: i2c@1 {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			reg = <1>;
> +		};
> +
> +		sfp_i2c2: i2c@2 {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			reg = <2>;
> +		};
> +
> +		sfp_i2c3: i2c@3 {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			reg = <3>;
> +		};
> +	};
> +
> +	i2c-mux@71 {
> +		compatible = "nxp,pca9546";
> +		reg = <0x71>;
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		i2c-mux-idle-disconnect;
> +
> +		mpcie1_i2c: i2c@0 {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			reg = <0>;
> +		};
> +
> +		mpcie0_i2c: i2c@1 {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			reg = <1>;
> +		};
> +
> +		pcieclk_i2c: i2c@2 {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			reg = <2>;
> +
> +			/* clock-controller@6b */
> +		};
> +	};
> +};
> +
> +&dpmac3 {
> +	sfp = <&sfp_at>;
> +	managed = "in-band-status";
> +	phys = <&serdes_1 7>;
> +};
> +
> +&dpmac4 {
> +	sfp = <&sfp_ab>;
> +	managed = "in-band-status";
> +	phys = <&serdes_1 6>;
> +};
> +
> +&dpmac5 {
> +	sfp = <&sfp_bt>;
> +	managed = "in-band-status";
> +	phys = <&serdes_1 5>;
> +};
> +
> +&dpmac6 {
> +	sfp = <&sfp_bb>;
> +	managed = "in-band-status";
> +	phys = <&serdes_1 4>;
> +};
> +
> +&dpmac11 {
> +	status = "okay";

We generally end property list with 'status'.

Shawn

> +	phys = <&serdes_2 0>;
> +	phy-handle = <&ethernet_phy2>;
> +	phy-connection-type = "sgmii";
> +};
> +
> +&dpmac12 {
> +	status = "okay";
> +	phys = <&serdes_2 1>;
> +	phy-handle = <&ethernet_phy0>;
> +	phy-connection-type = "sgmii";
> +};
> +
> +&dpmac13 {
> +	status = "okay";
> +	phys = <&serdes_2 6>;
> +	phy-handle = <&ethernet_phy5>;
> +	phy-connection-type = "sgmii";
> +};
> +
> +&dpmac14 {
> +	status = "okay";
> +	phys = <&serdes_2 7>;
> +	phy-handle = <&ethernet_phy7>;
> +	phy-connection-type = "sgmii";
> +};
> +
> +&dpmac15 {
> +	status = "okay";
> +	phys = <&serdes_2 4>;
> +	phy-handle = <&ethernet_phy3>;
> +	phy-connection-type = "sgmii";
> +};
> +
> +&dpmac16 {
> +	status = "okay";
> +	phys = <&serdes_2 5>;
> +	phy-handle = <&ethernet_phy1>;
> +	phy-connection-type = "sgmii";
> +};
> +
> +&dpmac17 {
> +	/* override connection to on-SoM phy */
> +	/delete-property/ phy-handle;
> +	/delete-property/ phy-connection-type;
> +
> +	status = "okay";
> +	phys = <&serdes_2 2>;
> +	phy-handle = <&ethernet_phy4>;
> +	phy-connection-type = "sgmii";
> +};
> +
> +&dpmac18 {
> +	status = "okay";
> +	phys = <&serdes_2 3>;
> +	phy-handle = <&ethernet_phy6>;
> +	phy-connection-type = "sgmii";
> +};
> +
> +&emdio1 {
> +	/*
> +	 * SoM has a phy at address 1 connected to SoC Ethernet Controller 1.
> +	 * It competes for WRIOP MAC17, and no connector has been wired.
> +	 */
> +	/delete-node/ ethernet-phy@1;
> +
> +	ethernet_phy0: ethernet-phy@8 {
> +		compatible = "ethernet-phy-ieee802.3-c45";
> +		reg = <8>;
> +		max-speed = <1000>;
> +	};
> +
> +	ethernet_phy1: ethernet-phy@9 {
> +		compatible = "ethernet-phy-ieee802.3-c45";
> +		reg = <9>;
> +		max-speed = <1000>;
> +	};
> +
> +	ethernet_phy2: ethernet-phy@10 {
> +		compatible = "ethernet-phy-ieee802.3-c45";
> +		reg = <10>;
> +		max-speed = <1000>;
> +	};
> +
> +	ethernet_phy3: ethernet-phy@11 {
> +		compatible = "ethernet-phy-ieee802.3-c45";
> +		reg = <11>;
> +		max-speed = <1000>;
> +	};
> +
> +	ethernet_phy4: ethernet-phy@12 {
> +		compatible = "ethernet-phy-ieee802.3-c45";
> +		reg = <12>;
> +		max-speed = <1000>;
> +	};
> +
> +	ethernet_phy5: ethernet-phy@13 {
> +		compatible = "ethernet-phy-ieee802.3-c45";
> +		reg = <13>;
> +		max-speed = <1000>;
> +	};
> +
> +	ethernet_phy6: ethernet-phy@14 {
> +		compatible = "ethernet-phy-ieee802.3-c45";
> +		reg = <14>;
> +		max-speed = <1000>;
> +	};
> +
> +	ethernet_phy7: ethernet-phy@15 {
> +		compatible = "ethernet-phy-ieee802.3-c45";
> +		reg = <15>;
> +		max-speed = <1000>;
> +	};
> +};
> +
> +&esdhc0 {
> +	status = "okay";
> +	sd-uhs-sdr104;
> +	sd-uhs-sdr50;
> +	sd-uhs-sdr25;
> +	sd-uhs-sdr12;
> +};
> +
> +&pcie3 {
> +	status = "disabled";
> +};
> +
> +&pcie4 {
> +	status = "disabled";
> +};
> +
> +&pcs_mdio3 {
> +	status = "okay";
> +};
> +
> +&pcs_mdio4 {
> +	status = "okay";
> +};
> +
> +&pcs_mdio5 {
> +	status = "okay";
> +};
> +
> +&pcs_mdio6 {
> +	status = "okay";
> +};
> +
> +&pcs_mdio11 {
> +	status = "okay";
> +};
> +
> +&pcs_mdio12 {
> +	status = "okay";
> +};
> +
> +&pcs_mdio13 {
> +	status = "okay";
> +};
> +
> +&pcs_mdio14 {
> +	status = "okay";
> +};
> +
> +&pcs_mdio15 {
> +	status = "okay";
> +};
> +
> +&pcs_mdio16 {
> +	status = "okay";
> +};
> +
> +&pcs_mdio17 {
> +	status = "okay";
> +};
> +
> +&pcs_mdio18 {
> +	status = "okay";
> +};
> +
> +&serdes_1 {
> +	status = "okay";
> +};
> +
> +&serdes_2 {
> +	status = "okay";
> +};
> +
> +&uart0 {
> +	status = "okay";
> +};
> +
> +&usb0 {
> +	status = "okay";
> +};
> diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2162a-sr-som.dtsi b/arch/arm64/boot/dts/freescale/fsl-lx2162a-sr-som.dtsi
> new file mode 100644
> index 000000000000..ac3f9bc60265
> --- /dev/null
> +++ b/arch/arm64/boot/dts/freescale/fsl-lx2162a-sr-som.dtsi
> @@ -0,0 +1,73 @@
> +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> +//
> +// Device Tree file for LX2162A-SOM
> +//
> +// Copyright 2021 Rabeeh Khoury <rabeeh@solid-run.com>
> +// Copyright 2023 Josua Mayer <josua@solid-run.com>
> +
> +&crypto {
> +	status = "okay";
> +};
> +
> +&dpmac17 {
> +	phy-handle = <&ethernet_phy0>;
> +	phy-connection-type = "rgmii-id";
> +};
> +
> +&emdio1 {
> +	status = "okay";
> +
> +	ethernet_phy0: ethernet-phy@1 {
> +		reg = <1>;
> +	};
> +};
> +
> +&esdhc1 {
> +	status = "okay";
> +	bus-width = <8>;
> +	mmc-hs200-1_8v;
> +	mmc-hs400-1_8v;
> +};
> +
> +&fspi {
> +	status = "okay";
> +
> +	flash@0 {
> +		compatible = "jedec,spi-nor";
> +		reg = <0>;
> +		m25p,fast-read;
> +		spi-max-frequency = <50000000>;
> +		/* The following setting enables 1-1-8 (CMD-ADDR-DATA) mode */
> +		spi-rx-bus-width = <8>;
> +		spi-tx-bus-width = <1>;
> +	};
> +};
> +
> +&i2c0 {
> +	status = "okay";
> +
> +	fan-controller@18 {
> +		compatible = "ti,amc6821";
> +		reg = <0x18>;
> +	};
> +
> +	ddr_spd: eeprom@51 {
> +		compatible = "st,24c02", "atmel,24c02";
> +		reg = <0x51>;
> +		read-only;
> +	};
> +
> +	config_eeprom: eeprom@57 {
> +		compatible = "st,24c02", "atmel,24c02";
> +		reg = <0x57>;
> +	};
> +};
> +
> +&i2c4 {
> +	status = "okay";
> +
> +	variable_eeprom: eeprom@54 {
> +		compatible = "st,24c2048", "atmel,24c2048";
> +		reg = <0x54>;
> +	};
> +};
> -- 
> 2.35.3
>
  

Hi Shawn,

Thank you for reviewing.

Note I have added a general question inline below.

Am 18.07.23 um 04:46 schrieb Shawn Guo:
> On Mon, Jun 19, 2023 at 12:00:26PM +0300, Josua Mayer wrote:
>> Add support for the SolidRun LX2162A System on Module (SoM), and the
>> Clearfog evaluation board.

>> +&dpmac11 {
>> +	status = "okay";
> We generally end property list with 'status'.
Okay, I will change the order for v4.
>
> Shawn
>
>> +	phys = <&serdes_2 0>;
>> +	phy-handle = <&ethernet_phy2>;
>> +	phy-connection-type = "sgmii";
>> +};
>> +
>> +&emdio1 {
>> +	/*
>> +	 * SoM has a phy at address 1 connected to SoC Ethernet Controller 1.
>> +	 * It competes for WRIOP MAC17, and no connector has been wired.
>> +	 */
>> +	/delete-node/ ethernet-phy@1;
Perhaps somebody can help here on what is best practice:
As outlined in the comment the SoM includes an ethernet phy at address 
1, which is not used at all by the Clearfog carrier.

What is the best practice for unused but available components?

The phy can still communicate on mdio - just it will never receive rgmii 
signals from ether cpu or carrier.
I am leaning towards just keeping it with status okay, if only for the 
prospect that a smart driver might put it in a power-saving mode.

>> +
>> +	ethernet_phy0: ethernet-phy@8 {
>> +		compatible = "ethernet-phy-ieee802.3-c45";
>> +		reg = <8>;
>> +		max-speed = <1000>;
>> +	};
>> +


- Josua Mayer
  

On Sun, Jul 23, 2023 at 12:37:38PM +0200, Josua Mayer wrote:
> Hi Shawn,
> 
> Thank you for reviewing.
> 
> Note I have added a general question inline below.
> 
> Am 18.07.23 um 04:46 schrieb Shawn Guo:
> > On Mon, Jun 19, 2023 at 12:00:26PM +0300, Josua Mayer wrote:
> > > Add support for the SolidRun LX2162A System on Module (SoM), and the
> > > Clearfog evaluation board.
> 
> > > +&dpmac11 {
> > > +	status = "okay";
> > We generally end property list with 'status'.
> Okay, I will change the order for v4.
> > 
> > Shawn
> > 
> > > +	phys = <&serdes_2 0>;
> > > +	phy-handle = <&ethernet_phy2>;
> > > +	phy-connection-type = "sgmii";
> > > +};
> > > +
> > > +&emdio1 {
> > > +	/*
> > > +	 * SoM has a phy at address 1 connected to SoC Ethernet Controller 1.
> > > +	 * It competes for WRIOP MAC17, and no connector has been wired.
> > > +	 */
> > > +	/delete-node/ ethernet-phy@1;
> Perhaps somebody can help here on what is best practice:
> As outlined in the comment the SoM includes an ethernet phy at address 1,
> which is not used at all by the Clearfog carrier.
> 
> What is the best practice for unused but available components?

If you are saying the connector is not wired on Clearfog, it might make
more sense to give it a disabled status in clearfog dts, IMO.

Shawn

> 
> The phy can still communicate on mdio - just it will never receive rgmii
> signals from ether cpu or carrier.
> I am leaning towards just keeping it with status okay, if only for the
> prospect that a smart driver might put it in a power-saving mode.
> 
> > > +
> > > +	ethernet_phy0: ethernet-phy@8 {
> > > +		compatible = "ethernet-phy-ieee802.3-c45";
> > > +		reg = <8>;
> > > +		max-speed = <1000>;
> > > +	};
> > > +