topic: zynqmp: Add support for zynqmp-xilinx-xdp platform

XDP - Xilinx Drone Platform is a board for drones or other UAV.

Pinmux the SD card by default, and if the SD card detect line is high
(inactive) then pinmux the SD1 interface to EMIO instead. SD is placed on
extension card and shares connection with on board wife. That means that
when SD card is present in the board wifi can't be used.

There seems to be an issue with DDR access from PL at 2400MT/s, after
updating the PMU and ATF firmware this is causing extremely slow DDR
access. Reducing the DDR speed from 2400 to 2133 appears to solve that
issue, even though the hardware has proven to be 2400 capable.

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

2 files changed, 118 insertions, 0 deletions

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 9900b442741..aa10bb6b350 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -280,6 +280,7 @@ dtb-$(CONFIG_ARCH_ZYNQMP) += \
 	zynqmp-mini-emmc1.dtb			\
 	zynqmp-mini-nand.dtb			\
 	zynqmp-mini-qspi.dtb			\
+	zynqmp-topic-miamimp-xilinx-xdp-v1r1.dtb	\
 	zynqmp-zcu100-revC.dtb			\
 	zynqmp-zcu102-revA.dtb			\
 	zynqmp-zcu102-revB.dtb			\
diff --git a/arch/arm/dts/zynqmp-topic-miamimp-xilinx-xdp-v1r1.dts b/arch/arm/dts/zynqmp-topic-miamimp-xilinx-xdp-v1r1.dts
new file mode 100644
index 00000000000..0ee8c62f6b9
--- /dev/null
+++ b/arch/arm/dts/zynqmp-topic-miamimp-xilinx-xdp-v1r1.dts
@@ -0,0 +1,117 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * dts file for Topic XDP (Xilinx Drone Platform)
+ *
+ * (C) Copyright 2016, Topic Embedded Products BV
+ * Mike Looijmans <mike.looijmans@topic.nl>
+ */
+
+/dts-v1/;
+
+#include "zynqmp.dtsi"
+#include "zynqmp-clk-ccf.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/phy/phy.h>
+
+/ {
+	model = "Topic Miamimp ZynqMP XDP v1r1";
+	compatible = "topic,miamimp-xdp-v1r1", "topic,miamimp-xdp",
+		     "topic,miamimp", "xlnx,zynqmp";
+
+	aliases {
+		gpio0 = &gpio;
+		i2c0 = &i2c0;
+		i2c1 = &i2c1;
+		mmc0 = &sdhci0;
+		mmc1 = &sdhci1;
+		rtc0 = &rtc;
+		serial0 = &uart1;
+		serial1 = &uart0;
+		serial2 = &dcc;
+		spi0 = &qspi;
+		usb0 = &usb0;
+	};
+
+	chosen {
+		bootargs = "earlycon";
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x0 0x0 0x80000000>, <0x8 0x00000000 0x0 0x80000000>;
+	};
+};
+
+&dcc {
+	status = "okay";
+};
+
+&gpio {
+	status = "okay";
+};
+
+&gpu {
+	status = "okay";
+};
+
+&qspi {
+	status = "okay";
+	is-dual = <1>;
+	flash@0 {
+		compatible = "st,m25p80", "n25q256a";
+		m25p,fast-read;
+		reg = <0x0>;
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <4>;
+		spi-max-frequency = <166000000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		is-dual = <1>;
+		partition@0 {
+			label = "qspi-boot-bin";
+			reg = <0x00000 0x60000>;
+		};
+		partition@60000 {
+			label = "qspi-u-boot-itb";
+			reg = <0x60000 0x100000>;
+		};
+		partition@160000 {
+			label = "qspi-u-boot-env";
+			reg = <0x160000 0x20000>;
+		};
+		partition@200000 {
+			label = "qspi-rootfs";
+			reg = <0x200000 0x1e00000>;
+		};
+	};
+};
+
+&rtc {
+	status = "okay";
+};
+
+/* eMMC device */
+&sdhci0 {
+	status = "okay";
+	non-removable;
+	disable-wp; /* We don't have a write-protect detection */
+	bus-width = <8>;
+	xlnx,mio_bank = <0>;
+};
+
+/* SD1 with level shifter */
+&sdhci1 {
+	status = "okay";
+	xlnx,mio_bank = <1>;
+	disable-wp; /* We don't have a write-protect detection */
+	bus-width = <4>;
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&uart1 {
+	status = "okay";
+};