ARM: dts: socfpga: add Enclustra Mercury SA1

Introduce support for Enclustra's Mercury SA1 SoM based on Intel Cyclone5
technology as a .dtsi file.

Signed-off-by: Andreas Buerkler <andreas.buerkler@enclustra.com>
Signed-off-by: Lothar Rubusch <l.rubusch@gmail.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>

diff --git a/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_mercury_sa1.dtsi b/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_mercury_sa1.dtsi
new file mode 100644 (file)
index 0000000..49944f9
--- /dev/null
+++ b/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_mercury_sa1.dtsi
@@ -0,0 +1,143 @@
+// SPDX-License-Identifier: GPL-2.0+ OR MIT
+/*
+ * Copyright (C) 2024 Enclustra GmbH - https://www.enclustra.com
+ */
+
+#include "socfpga_cyclone5.dtsi"
+
+/ {
+       model = "Enclustra Mercury SA1";
+       compatible = "altr,socfpga-cyclone5", "altr,socfpga";
+
+       chosen {
+               stdout-path = "serial0:115200n8";
+       };
+
+       aliases {
+               ethernet0 = &gmac1;
+       };
+
+       /* Adjusted the i2c labels to use generic base-board dtsi files for
+        * Enclustra Arria10 and Cyclone5 SoMs.
+        *
+        * The set of i2c0 and i2c1 labels defined in socfpga_cyclone5.dtsi and in
+        * socfpga_arria10.dtsi do not allow for using the same base-board .dtsi
+        * fragments. Thus define generic labels here to match the correct i2c
+        * bus in a generic base-board .dtsi file.
+        */
+       soc {
+               i2c_encl: i2c@ffc04000 {
+               };
+               i2c_encl_fpga: i2c@ffc05000 {
+               };
+       };
+
+       memory {
+               name = "memory";
+               device_type = "memory";
+               reg = <0x0 0x40000000>; /* 1GB */
+       };
+};
+
+&osc1 {
+       clock-frequency = <50000000>;
+};
+
+&i2c_encl {
+       i2c-sda-hold-time-ns = <300>;
+       clock-frequency = <100000>;
+       status = "okay";
+
+       isl12020: rtc@6f {
+               compatible = "isil,isl12022";
+               reg = <0x6f>;
+       };
+};
+
+&i2c_encl_fpga {
+       i2c-sda-hold-time-ns = <300>;
+       status = "disabled";
+};
+
+&uart0 {
+       clock-frequency = <100000000>;
+};
+
+&mmc0 {
+       status = "okay";
+       /delete-property/ cap-mmc-highspeed;
+       /delete-property/ cap-sd-highspeed;
+};
+
+&qspi {
+       status = "okay";
+
+       flash0: flash@0 {
+               u-boot,dm-pre-reloc;
+               #address-cells = <1>;
+               #size-cells = <1>;
+               compatible = "jedec,spi-nor";
+               reg = <0>;
+
+               spi-rx-bus-width = <4>;
+               spi-tx-bus-width = <4>;
+               spi-max-frequency = <10000000>;
+
+               cdns,read-delay = <4>;
+               cdns,tshsl-ns = <50>;
+               cdns,tsd2d-ns = <50>;
+               cdns,tchsh-ns = <4>;
+               cdns,tslch-ns = <4>;
+
+               partition@raw {
+                       label = "Flash Raw";
+                       reg = <0x0 0x4000000>;
+               };
+       };
+};
+
+&gpio0 {
+       status = "okay";
+};
+
+&gpio1 {
+       status = "okay";
+};
+
+&gmac1 {
+       status = "okay";
+       /delete-property/ mac-address;
+       phy-mode = "rgmii-id";
+       phy-handle = <&phy3>;
+
+       mdio0 {
+               #address-cells = <1>;
+               #size-cells = <0>;
+               compatible = "snps,dwmac-mdio";
+
+               phy3: ethernet-phy@3 {
+                       reg = <3>;
+
+                       /* Add 2ns RX clock delay (1.2ns + 0.78ns)*/
+                       rxc-skew-ps = <1680>;
+                       rxd0-skew-ps = <420>;
+                       rxd1-skew-ps = <420>;
+                       rxd2-skew-ps = <420>;
+                       rxd3-skew-ps = <420>;
+                       rxdv-skew-ps = <420>;
+
+                       /* Add 1.38ns TX clock delay (0.96ns + 0.42ns)*/
+                       txc-skew-ps = <1860>;
+                       txd0-skew-ps = <0>;
+                       txd1-skew-ps = <0>;
+                       txd2-skew-ps = <0>;
+                       txd3-skew-ps = <0>;
+                       txen-skew-ps = <0>;
+               };
+       };
+};
+
+&usb1 {
+       status = "okay";
+       dr_mode = "host";
+};