board: armltd: Add support for Total Compute platform

Total Compute is based on ARM architecture and has
the following features enabled in u-boot:
- PL011 UART
- PL180 MMC
- NOR Flash
- FIT image with Signature
- AVB

Signed-off-by: Usama Arif <usama.arif@arm.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

arch/arm/Kconfig

@@ -1198,6 +1198,15 @@ config TARGET_VEXPRESS64_JUNO
 	select USB
 	select DM_USB
 
+config TARGET_TOTAL_COMPUTE
+	bool "Support Total Compute Platform"
+	select ARM64
+	select PL01X_SERIAL
+	select DM
+	select DM_SERIAL
+	select DM_MMC
+	select DM_GPIO
+
 config TARGET_LS2080A_EMU
 	bool "Support ls2080a_emu"
 	select ARCH_LS2080A
@@ -1904,6 +1913,8 @@ source "arch/arm/mach-imx/Kconfig"
 
 source "arch/arm/mach-nexell/Kconfig"
 
+source "board/armltd/total_compute/Kconfig"
+
 source "board/bosch/shc/Kconfig"
 source "board/bosch/guardian/Kconfig"
 source "board/CarMediaLab/flea3/Kconfig"

arch/arm/dts/Makefile

@@ -981,6 +981,8 @@ dtb-$(CONFIG_TARGET_VEXPRESS_CA5X2) += vexpress-v2p-ca5s.dtb
 dtb-$(CONFIG_TARGET_VEXPRESS_CA9X4) += vexpress-v2p-ca9.dtb
 dtb-$(CONFIG_TARGET_VEXPRESS_CA15_TC2) += vexpress-v2p-ca15_a7.dtb
 
+dtb-$(CONFIG_TARGET_TOTAL_COMPUTE) += total_compute.dtb
+
 dtb-$(CONFIG_TARGET_DURIAN) += phytium-durian.dtb
 
 dtb-$(CONFIG_TARGET_PRESIDIO_ASIC) += ca-presidio-engboard.dtb

arch/arm/dts/total_compute.dts

@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2020 Arm Limited
+ */
+
+/dts-v1/;
+
+/ {
+	model = "total_compute";
+	compatible = "arm,total_compute";
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	sysreg: sysreg@1c010000 {
+		compatible = "arm,vexpress-sysreg";
+		reg = <0x0 0x001c010000 0x0 0x1000>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+
+	fixed_3v3: v2m-3v3 {
+		compatible = "regulator-fixed";
+		regulator-name = "3V3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+	};
+
+	mmci@1c050000 {
+		compatible = "arm,pl180", "arm,primecell";
+		reg = <0x0 0x001c050000 0x0 0x1000>;
+		cd-gpios = <&sysreg 0 0>;
+		arm,primecell-periphid = <0x00880180>;
+		wp-gpios = <&sysreg 1 0>;
+		bus-width = <8>;
+		max-frequency = <12000000>;
+		vmmc-supply = <&fixed_3v3>;
+		clocks = <&clock24mhz>, <&clock24mhz>;
+		clock-names = "mclk", "apb_pclk";
+	};
+
+	clock24mhz: clock24mhz {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <24000000>;
+		clock-output-names = "bp:clock24mhz";
+	};
+};

arch/arm/include/asm/gpio.h

@@ -3,7 +3,7 @@
 	!defined(CONFIG_ARCH_BCM6858) && !defined(CONFIG_ARCH_BCM63158) && \
 	!defined(CONFIG_ARCH_ROCKCHIP) && !defined(CONFIG_ARCH_ASPEED) && \
 	!defined(CONFIG_ARCH_U8500) && !defined(CONFIG_CORTINA_PLATFORM) && \
-	!defined(CONFIG_TARGET_BCMNS3)
+	!defined(CONFIG_TARGET_BCMNS3) && !defined(CONFIG_TARGET_TOTAL_COMPUTE)
 #include <asm/arch/gpio.h>
 #endif
 #include <asm-generic/gpio.h>