arm: zynq: Add support for Bitmain Antminer S9 control board

This is control board on Bitmain Antminer S9.
There are 3 board variables with 256MB, 512MB and 1024MB DDR.
DDR memory is automatically detected with using get_with using
get_ram_size().

Bitmain is using 16MB space for FPGA which is handled via
reserved-memory. Also U-Boot is allocating 16B for storing bootcounts.
Watchdog is started but never service in U-Boot.

SPL MMC is working. SPL NAND is not working because it is not supported
as of now.

Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Michal Simek <monstr@monstr.eu>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

1 files changed, 78 insertions, 0 deletions

diff --git a/arch/arm/dts/bitmain-antminer-s9.dts b/arch/arm/dts/bitmain-antminer-s9.dts
new file mode 100644
index 0000000..7362ad4
--- /dev/null
+++ b/arch/arm/dts/bitmain-antminer-s9.dts
@@ -0,0 +1,78 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Bitmain Antminer S9 board DTS
+ *
+ * Copyright (C) 2018 Michal Simek
+ * Copyright (C) 2018 VanguardiaSur
+ */
+/dts-v1/;
+#include "zynq-7000.dtsi"
+
+/ {
+	model = "Bitmain Antminer S9 Board";
+	compatible = "bitmain,antminer-s9", "xlnx,zynq-7000";
+
+	aliases {
+		ethernet0 = &gem0;
+		serial0 = &uart1;
+		mmc0 = &sdhci0;
+		gpio0 = &gpio0;
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x40000000>;
+	};
+
+	reserved-memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		bootcount@efffff0 {
+			reg = <0xefffff0 0x10>;
+			no-map;
+		};
+
+		fpga_space@f000000 {
+			reg = <0xf000000 0x1000000>;
+			no-map;
+		};
+	};
+
+	chosen {
+		bootargs = "earlycon";
+		stdout-path = "serial0:115200n8";
+	};
+};
+
+&clkc {
+	ps-clk-frequency = <33333333>;
+};
+
+&gem0 {
+	status = "okay";
+	phy-mode = "rgmii-id";
+	phy-handle = <&ethernet_phy>;
+
+	/* 0362/5e62 */
+	ethernet_phy: ethernet-phy@1 {
+		reg = <1>;
+	};
+};
+
+&sdhci0 {
+	u-boot,dm-pre-reloc;
+	status = "okay";
+	disable-wp;
+};
+
+&uart1 {
+	u-boot,dm-pre-reloc;
+	status = "okay";
+};
+
+&watchdog0 {
+	reset-on-timeout;
+	timeout-sec = <200>;
+};