Add eMMC support for Stratix 10 SoCDK

From: Ng Tze Yee <[email protected]>

Stratix 10 devkit support a separate eMMC daughter card. Document Stratix 10 eMMC daughter board compatible.

Signed-off-by Ng Tze Yee <[email protected]>

---
 Documentation/devicetree/bindings/arm/altera.yaml | 1 +
 1 file changed, 1 insertion(+)

Documentation/devicetree/bindings/arm/altera.yaml +1 -0

index db61537b7115..2a8bc85e9be9 100644
@@ -78,6 +78,7 @@ properties:
         items:
           - enum:
               - altr,socfpga-stratix10-socdk
+              - altr,socfpga-stratix10-socdk-emmc
               - altr,socfpga-stratix10-swvp
           - const: altr,socfpga-stratix10
 

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2.25.1

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Quoted 3 lines · Conor Dooley

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Hi Conor,

Just to confirm I understand correctly, would you like me to update both:

1. The binding schema (altera.yaml) to split the Stratix 10 boards into two patterns, with the eMMC variant having a fallback chain?

- description: Stratix 10 boards
items:
- enum:
- altr,socfpga-stratix10-socdk
- altr,socfpga-stratix10-swvp
- const: altr,socfpga-stratix10

- description: Stratix 10 SoCDK eMMC variant items:
- const: altr,socfpga-stratix10-socdk-emmc
- const: altr,socfpga-stratix10-socdk
- const: altr,socfpga-stratix10

2. The device tree (socfpga_stratix10_socdk_emmc.dts) to update the compatible property

from:
compatible = "altr,socfpga-stratix10-socdk-emmc", "altr,socfpga-stratix10";

to:
compatible = "altr,socfpga-stratix10-socdk-emmc",
"altr,socfpga-stratix10-socdk",
"altr,socfpga-stratix10";

Please let me know if this is the expected approach, or if you had something different in mind.

arch/arm64/boot/dts/altera/socfpga_stratix10_socdk_emmc.dts new file +45 -0

@@ -0,0 +1,155 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright Altera Corporation (C) 2026. All rights reserved.
+ */
+
+#include "socfpga_stratix10.dtsi"
+
+/ {
+	model = "SoCFPGA Stratix 10 SoCDK eMMC daughter board";
+	compatible = "altr,socfpga-stratix10-socdk-emmc", "altr,socfpga-stratix10";
+
+	aliases {
+		serial0 = &uart0;
+		ethernet0 = &gmac0;
+		ethernet1 = &gmac1;
+		ethernet2 = &gmac2;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		led-hps0 {
+			label = "hps_led0";
+			gpios = <&portb 20 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-hps1 {
+			label = "hps_led1";
+			gpios = <&portb 19 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-hps2 {
+			label = "hps_led2";
+			gpios = <&portb 21 GPIO_ACTIVE_HIGH>;
+		};
+	};
+
+	memory@80000000 {
+		device_type = "memory";
+		/* We expect the bootloader to fill in the reg */
+		reg = <0 0x80000000 0 0>;
+	};

arch/arm64/boot/dts/altera/socfpga_stratix10_socdk_emmc.dts new file +100 -0

+			sdmmca-ecc@ff8c8c00 {
+				compatible = "altr,socfpga-s10-sdmmc-ecc",
+					     "altr,socfpga-sdmmc-ecc";
+				reg = <0xff8c8c00 0x100>;
+				altr,ecc-parent = <&mmc>;
+				interrupts = <14 4>,
+					     <15 4>;
+			};
+		};
+	};
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&gmac2 {
+	status = "okay";
+	/* PHY delays is configured via skew properties */
+	phy-mode = "rgmii";
+	phy-handle = <&phy0>;
+
+	max-frame-size = <9000>;
+
+	mdio0 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "snps,dwmac-mdio";
+		phy0: ethernet-phy@4 {
+			reg = <4>;
+
+			txd0-skew-ps = <0>; /* -420ps */
+			txd1-skew-ps = <0>; /* -420ps */
+			txd2-skew-ps = <0>; /* -420ps */
+			txd3-skew-ps = <0>; /* -420ps */
+			rxd0-skew-ps = <420>; /* 0ps */
+			rxd1-skew-ps = <420>; /* 0ps */
+			rxd2-skew-ps = <420>; /* 0ps */
+			rxd3-skew-ps = <420>; /* 0ps */
+			txen-skew-ps = <0>; /* -420ps */
+			txc-skew-ps = <900>; /* 0ps */
+			rxdv-skew-ps = <420>; /* 0ps */
+			rxc-skew-ps = <1680>; /* 780ps */
+		};
+	};
+};
+
+&mmc {
+	status = "okay";
+	cap-mmc-highspeed;
+	broken-cd;
+	bus-width = <4>;
+	clk-phase-sd-hs = <0>, <135>;
+};
+
+&osc1 {
+	clock-frequency = <25000000>;
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&usb0 {
+	status = "okay";
+	disable-over-current;
+};
+
+&watchdog0 {
+	status = "okay";
+};
+
+&i2c2 {
+	status = "okay";
+	clock-frequency = <100000>;
+	i2c-sda-falling-time-ns = <890>;  /* hcnt */
+	i2c-scl-falling-time-ns = <890>;  /* lcnt */
+
+	adc@14 {
+		compatible = "lltc,ltc2497";
+		reg = <0x14>;
+		vref-supply = <&ref_033v>;
+	};
+
+	temp@4c {
+		compatible = "maxim,max1619";
+		reg = <0x4c>;
+	};
+
+	eeprom@51 {
+		compatible = "atmel,24c32";
+		reg = <0x51>;
+		pagesize = <32>;
+	};
+
+	rtc@68 {
+		compatible = "dallas,ds1339";
+		reg = <0x68>;
+	};
+};

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2.25.1