board: kontron: add sl28 support

Add basic support for the Kontron SMARC-sAL28 board. This includes just
the bare minimum to be able to bring up the board and boot linux.

For now, the Single and Dual PHY variant is supported. Other variants
will fall back to the basic variant.

In particular, there is no watchdog support for now. This means that you
have to disable the default watchdog, otherwise you'll end up in the
recovery bootloader. See the board README for details.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Tom Rini <trini@konsulko.com>
Tested-by: Heiko Thiery <heiko.thiery@gmail.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>

8 files changed, 405 insertions, 0 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 80f09601e4..b2f7fcbd6e 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1620,6 +1620,16 @@ config TARGET_LS1046AFRWY
 	  development platform that supports the QorIQ LS1046A
 	  Layerscape Architecture processor.
 
+config TARGET_SL28
+	bool "Support sl28"
+	select ARCH_LS1028A
+	select ARM64
+	select ARMV8_MULTIENTRY
+	select SUPPORT_SPL
+	select BINMAN
+	help
+	  Support for Kontron SMARC-sAL28 board.
+
 config TARGET_COLIBRI_PXA270
 	bool "Support colibri_pxa270"
 	select CPU_PXA
@@ -1998,6 +2008,7 @@ source "board/hisilicon/hikey/Kconfig"
 source "board/hisilicon/hikey960/Kconfig"
 source "board/hisilicon/poplar/Kconfig"
 source "board/isee/igep003x/Kconfig"
+source "board/kontron/sl28/Kconfig"
 source "board/myir/mys_6ulx/Kconfig"
 source "board/spear/spear300/Kconfig"
 source "board/spear/spear310/Kconfig"
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index b195723f16..d8b0a913be 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -424,6 +424,9 @@ dtb-$(CONFIG_FSL_LSCH2) += fsl-ls1043a-qds-duart.dtb \
 	fsl-ls1012a-2g5rdb.dtb \
 	fsl-ls1012a-frdm.dtb \
 	fsl-ls1012a-frwy.dtb
+dtb-$(CONFIG_TARGET_SL28) += fsl-ls1028a-kontron-sl28.dtb \
+	fsl-ls1028a-kontron-sl28-var3.dtb \
+	fsl-ls1028a-kontron-sl28-var4.dtb \
 
 dtb-$(CONFIG_TARGET_DRAGONBOARD410C) += dragonboard410c.dtb
 dtb-$(CONFIG_TARGET_DRAGONBOARD820C) += dragonboard820c.dtb
diff --git a/arch/arm/dts/fsl-ls1028a-kontron-sl28-u-boot.dtsi b/arch/arm/dts/fsl-ls1028a-kontron-sl28-u-boot.dtsi
new file mode 100644
index 0000000000..2375549c6e
--- /dev/null
+++ b/arch/arm/dts/fsl-ls1028a-kontron-sl28-u-boot.dtsi
@@ -0,0 +1,135 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <config.h>
+
+/ {
+	aliases {
+		mmc0 = &esdhc0;
+		mmc1 = &esdhc1;
+		i2c0 = &i2c0;
+		i2c1 = &i2c3;
+		i2c2 = &i2c4;
+		rtc0 = &rtc;
+		ethernet0 = &enetc0;
+		ethernet1 = &enetc1;
+		ethernet2 = &enetc2;
+		ethernet3 = &enetc6;
+	};
+
+	binman {
+		filename = "u-boot.rom";
+		pad-byte = <0xff>;
+
+		u-boot-spl {
+		};
+
+		fit {
+			offset = <CONFIG_SPL_PAD_TO>;
+			description = "FIT image with multiple configurations";
+
+			images {
+				uboot {
+					description = "U-Boot";
+					type = "firmware";
+					os = "u-boot";
+					arch = "arm";
+					compression = "none";
+					load = <CONFIG_SYS_TEXT_BASE>;
+
+					u-boot-nodtb {
+					};
+				};
+
+				fdt-1 {
+					description = "fsl-ls1028a-kontron-sl28";
+					type = "flat_dt";
+					arch = "arm";
+					compression = "none";
+
+					blob {
+						filename = "arch/arm/dts/fsl-ls1028a-kontron-sl28.dtb";
+					};
+				};
+
+				fdt-2 {
+					description = "fsl-ls1028a-kontron-sl28-var3";
+					type = "flat_dt";
+					arch = "arm";
+					compression = "none";
+
+					blob {
+						filename = "arch/arm/dts/fsl-ls1028a-kontron-sl28-var3.dtb";
+					};
+				};
+
+				fdt-3 {
+					description = "fsl-ls1028a-kontron-sl28-var4";
+					type = "flat_dt";
+					arch = "arm";
+					compression = "none";
+
+					blob {
+						filename = "arch/arm/dts/fsl-ls1028a-kontron-sl28-var4.dtb";
+					};
+				};
+			};
+
+			configurations {
+				default = "conf-1";
+
+				conf-1 {
+					description = "fsl-ls1028a-kontron-sl28";
+					firmware = "uboot";
+					loadables = "uboot";
+					fdt = "fdt-1";
+				};
+
+				conf-2 {
+					description = "fsl-ls1028a-kontron-sl28-var3";
+					firmware = "uboot";
+					loadables = "uboot";
+					fdt = "fdt-2";
+				};
+
+				conf-3 {
+					description = "fsl-ls1028a-kontron-sl28-var4";
+					firmware = "uboot";
+					loadables = "uboot";
+					fdt = "fdt-3";
+				};
+			};
+		};
+	};
+};
+
+&i2c0 {
+	rtc: rtc@32 {
+	};
+};
+
+&fspi {
+	u-boot,dm-pre-reloc;
+	flash@0 {
+		u-boot,dm-pre-reloc;
+	};
+};
+
+&dspi2 {
+	u-boot,dm-pre-reloc;
+};
+
+&esdhc0 {
+	u-boot,dm-pre-reloc;
+};
+
+&esdhc1 {
+	u-boot,dm-pre-reloc;
+};
+
+&serial0 {
+	u-boot,dm-pre-reloc;
+};
+
+&sysclk {
+	u-boot,dm-pre-reloc;
+};
diff --git a/arch/arm/dts/fsl-ls1028a-kontron-sl28-var3-u-boot.dtsi b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var3-u-boot.dtsi
new file mode 100644
index 0000000000..79b771e074
--- /dev/null
+++ b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var3-u-boot.dtsi
@@ -0,0 +1,2 @@
+// SPDX-License-Identifier: GPL-2.0+
+#include "fsl-ls1028a-kontron-sl28-u-boot.dtsi"
diff --git a/arch/arm/dts/fsl-ls1028a-kontron-sl28-var3.dts b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var3.dts
new file mode 100644
index 0000000000..0c8b2af41a
--- /dev/null
+++ b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var3.dts
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Device Tree file for the Kontron SMARC-sAL28 board.
+ *
+ * Copyright (C) 2019 Michael Walle <michael@walle.cc>
+ *
+ */
+
+/dts-v1/;
+#include "fsl-ls1028a-kontron-sl28.dts"
+
+/ {
+	model = "Kontron SMARC-sAL28 (Single PHY)";
+	compatible = "kontron,sl28-var3", "kontron,sl28", "fsl,ls1028a";
+};
diff --git a/arch/arm/dts/fsl-ls1028a-kontron-sl28-var4-u-boot.dtsi b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var4-u-boot.dtsi
new file mode 100644
index 0000000000..79b771e074
--- /dev/null
+++ b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var4-u-boot.dtsi
@@ -0,0 +1,2 @@
+// SPDX-License-Identifier: GPL-2.0+
+#include "fsl-ls1028a-kontron-sl28-u-boot.dtsi"
diff --git a/arch/arm/dts/fsl-ls1028a-kontron-sl28-var4.dts b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var4.dts
new file mode 100644
index 0000000000..33b16303ad
--- /dev/null
+++ b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var4.dts
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Device Tree file for the Kontron SMARC-sAL28 board.
+ *
+ * This is for the network variant 4 which has two ethernet ports. It
+ * extends the base and provides one more port connected via RGMII.
+ *
+ * Copyright (C) 2019 Michael Walle <michael@walle.cc>
+ *
+ */
+
+/dts-v1/;
+#include "fsl-ls1028a-kontron-sl28.dts"
+#include <dt-bindings/net/qca-ar803x.h>
+
+/ {
+	model = "Kontron SMARC-sAL28 (Dual PHY)";
+	compatible = "kontron,sl28-var4", "kontron,sl28", "fsl,ls1028a";
+};
+
+&enetc1 {
+	phy-handle = <&phy1>;
+	phy-mode = "rgmii-id";
+	status = "okay";
+};
+
+&mdio0 {
+	phy1: ethernet-phy@4 {
+		reg = <0x4>;
+		eee-broken-1000t;
+		eee-broken-100tx;
+
+		qca,clk-out-frequency = <125000000>;
+		qca,clk-out-strength = <AR803X_STRENGTH_FULL>;
+
+		vddio-supply = <&vddh>;
+
+		vddio: vddio-regulator {
+			regulator-name = "VDDIO";
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <1800000>;
+		};
+
+		vddh: vddh-regulator {
+			regulator-name = "VDDH";
+		};
+	};
+};
diff --git a/arch/arm/dts/fsl-ls1028a-kontron-sl28.dts b/arch/arm/dts/fsl-ls1028a-kontron-sl28.dts
new file mode 100644
index 0000000000..9561a58562
--- /dev/null
+++ b/arch/arm/dts/fsl-ls1028a-kontron-sl28.dts
@@ -0,0 +1,189 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Device Tree file for the Kontron SMARC-sAL28 board.
+ *
+ * Copyright (C) 2019 Michael Walle <michael@walle.cc>
+ *
+ */
+
+/dts-v1/;
+#include "fsl-ls1028a.dtsi"
+
+/ {
+	model = "Kontron SMARC-sAL28";
+	compatible = "kontron,sl28", "fsl,ls1028a";
+
+	aliases {
+		serial0 = &serial0;
+		serial1 = &serial1;
+		serial2 = &lpuart1;
+		spi0 = &fspi;
+		spi1 = &dspi2;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+};
+
+&dspi2 {
+	status = "okay";
+};
+
+&enetc0 {
+	phy-handle = <&phy0>;
+	phy-mode = "sgmii";
+	status = "okay";
+};
+
+&enetc2 {
+	status = "disabled";
+};
+
+&enetc6 {
+	status = "disabled";
+};
+
+&esdhc0 {
+	sd-uhs-sdr104;
+	sd-uhs-sdr50;
+	sd-uhs-sdr25;
+	sd-uhs-sdr12;
+	status = "okay";
+};
+
+&esdhc1 {
+	mmc-hs200-1_8v;
+	mmc-hs400-1_8v;
+	bus-width = <8>;
+	status = "okay";
+};
+
+&fspi {
+	status = "okay";
+
+	flash@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		m25p,fast-read;
+		spi-max-frequency = <133000000>;
+		reg = <0>;
+		/* The following setting enables 1-1-2 (CMD-ADDR-DATA) mode */
+		spi-rx-bus-width = <2>; /* 2 SPI Rx lines */
+		spi-tx-bus-width = <1>; /* 1 SPI Tx line */
+
+		partition@0 {
+			reg = <0x000000 0x010000>;
+			label = "rcw";
+			read-only;
+		};
+
+		partition@10000 {
+			reg = <0x010000 0x0f0000>;
+			label = "failsafe bootloader";
+			read-only;
+		};
+
+		partition@100000 {
+			reg = <0x100000 0x040000>;
+			label = "failsafe DP firmware";
+			read-only;
+		};
+
+		partition@140000 {
+			reg = <0x140000 0x0a0000>;
+			label = "failsafe trusted firmware";
+			read-only;
+		};
+
+		partition@1e0000 {
+			reg = <0x1e0000 0x020000>;
+			label = "reserved";
+			read-only;
+		};
+
+		partition@200000 {
+			reg = <0x200000 0x010000>;
+			label = "configuration store";
+		};
+
+		partition@210000 {
+			reg = <0x210000 0x0f0000>;
+			label = "bootloader";
+		};
+
+		partition@300000 {
+			reg = <0x300000 0x040000>;
+			label = "DP firmware";
+		};
+
+		partition@340000 {
+			reg = <0x340000 0x0a0000>;
+			label = "trusted firmware";
+		};
+
+		partition@3e0000 {
+			reg = <0x3e0000 0x020000>;
+			label = "bootloader environment";
+		};
+	};
+};
+
+&i2c0 {
+	status = "okay";
+
+	rtc@32 {
+		compatible = "microcrystal,rv8803";
+		reg = <0x32>;
+	};
+
+	eeprom@50 {
+		compatible = "atmel,24c32";
+		reg = <0x50>;
+		pagesize = <32>;
+	};
+};
+
+&i2c3 {
+	status = "okay";
+};
+
+&i2c4 {
+	status = "okay";
+
+	eeprom@50 {
+		compatible = "atmel,24c32";
+		reg = <0x50>;
+		pagesize = <32>;
+	};
+};
+
+&lpuart1 {
+	status = "okay";
+};
+
+&mdio0 {
+	status = "okay";
+	phy0: ethernet-phy@5 {
+		reg = <0x5>;
+		eee-broken-1000t;
+		eee-broken-100tx;
+	};
+};
+
+&serial0 {
+	status = "okay";
+};
+
+&serial1 {
+	status = "okay";
+};
+
+&usb1 {
+	status = "okay";
+};
+
+&usb2 {
+	status = "okay";
+};