RISC-V: PolarFire SoC Device Tree Updates

This add a device tree for Sundance Polarberry, along with various
cleanups to the PolarFire SOC device trees and bindings.

Link: https://lore.kernel.org/r/20220509142610.128590-1-conor.dooley@microchip.com

* 'riscv-pfsoc-dt' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/palmer/linux:
  riscv: dts: icicle: sort nodes alphabetically
  riscv: microchip: icicle: readability fixes
  riscv: dts: microchip: add the sundance polarberry
  dt-bindings: riscv: microchip: add polarberry compatible string
  dt-bindings: vendor-prefixes: add Sundance DSP
  riscv: dts: microchip: make the fabric dtsi board specific
  dt-bindings: riscv: microchip: document icicle reference design
  riscv: dts: microchip: remove soc vendor from filenames
  riscv: dts: microchip: move sysctrlr out of soc bus
  riscv: dts: microchip: remove icicle memory clocks

Documentation/devicetree/bindings/riscv/microchip.yaml

@@ -20,6 +20,8 @@ properties:
     items:
       - enum:
           - microchip,mpfs-icicle-kit
+          - microchip,mpfs-icicle-reference-rtlv2203
+          - sundance,polarberry
       - const: microchip,mpfs
 
 additionalProperties: true

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -1207,6 +1207,8 @@ patternProperties:
     description: Summit microelectronics
   "^sunchip,.*":
     description: Shenzhen Sunchip Technology Co., Ltd
+  "^sundance,.*":
+    description: Sundance DSP Inc.
   "^sunplus,.*":
     description: Sunplus Technology Co., Ltd.
   "^SUNW,.*":

arch/riscv/boot/dts/microchip/Makefile

 # SPDX-License-Identifier: GPL-2.0
-dtb-$(CONFIG_SOC_MICROCHIP_POLARFIRE) += microchip-mpfs-icicle-kit.dtb
+dtb-$(CONFIG_SOC_MICROCHIP_POLARFIRE) += mpfs-icicle-kit.dtb
+dtb-$(CONFIG_SOC_MICROCHIP_POLARFIRE) += mpfs-polarberry.dtb
 obj-$(CONFIG_BUILTIN_DTB) += $(addsuffix .o, $(dtb-y))

arch/riscv/boot/dts/microchip/microchip-mpfs-fabric.dtsi → arch/riscv/boot/dts/microchip/mpfs-icicle-kit-fabric.dtsi

@@ -2,6 +2,8 @@
 /* Copyright (c) 2020-2021 Microchip Technology Inc */
 
 / {
+	compatible = "microchip,mpfs-icicle-reference-rtlv2203", "microchip,mpfs";
+
 	core_pwm0: pwm@41000000 {
 		compatible = "microchip,corepwm-rtl-v4";
 		reg = <0x0 0x41000000 0x0 0xF0>;

arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts → arch/riscv/boot/dts/microchip/mpfs-icicle-kit.dts

@@ -3,7 +3,8 @@
 
 /dts-v1/;
 
-#include "microchip-mpfs.dtsi"
+#include "mpfs.dtsi"
+#include "mpfs-icicle-kit-fabric.dtsi"
 
 /* Clock frequency (in Hz) of the rtcclk */
 #define RTCCLK_FREQ		1000000
@@ -32,41 +33,71 @@ cpus {
 	ddrc_cache_lo: memory@80000000 {
 		device_type = "memory";
 		reg = <0x0 0x80000000 0x0 0x2e000000>;
-		clocks = <&clkcfg CLK_DDRC>;
 		status = "okay";
 	};
 
 	ddrc_cache_hi: memory@1000000000 {
 		device_type = "memory";
 		reg = <0x10 0x0 0x0 0x40000000>;
-		clocks = <&clkcfg CLK_DDRC>;
 		status = "okay";
 	};
 };
 
-&refclk {
-	clock-frequency = <125000000>;
+&core_pwm0 {
+	status = "okay";
 };
 
-&mmuart1 {
+&gpio2 {
+	interrupts = <53>, <53>, <53>, <53>,
+		     <53>, <53>, <53>, <53>,
+		     <53>, <53>, <53>, <53>,
+		     <53>, <53>, <53>, <53>,
+		     <53>, <53>, <53>, <53>,
+		     <53>, <53>, <53>, <53>,
+		     <53>, <53>, <53>, <53>,
+		     <53>, <53>, <53>, <53>;
 	status = "okay";
 };
 
-&mmuart2 {
+&i2c0 {
 	status = "okay";
 };
 
-&mmuart3 {
+&i2c1 {
 	status = "okay";
 };
 
-&mmuart4 {
+&i2c2 {
 	status = "okay";
 };
 
-&mmc {
+&mac0 {
+	phy-mode = "sgmii";
+	phy-handle = <&phy0>;
+	status = "okay";
+};
+
+&mac1 {
+	phy-mode = "sgmii";
+	phy-handle = <&phy1>;
 	status = "okay";
 
+	phy1: ethernet-phy@9 {
+		reg = <9>;
+		ti,fifo-depth = <0x1>;
+	};
+
+	phy0: ethernet-phy@8 {
+		reg = <8>;
+		ti,fifo-depth = <0x1>;
+	};
+};
+
+&mbox {
+	status = "okay";
+};
+
+&mmc {
 	bus-width = <4>;
 	disable-wp;
 	cap-sd-highspeed;
@@ -78,73 +109,46 @@ &mmc {
 	sd-uhs-sdr25;
 	sd-uhs-sdr50;
 	sd-uhs-sdr104;
-};
-
-&spi0 {
 	status = "okay";
 };
 
-&spi1 {
+&mmuart1 {
 	status = "okay";
 };
 
-&qspi {
+&mmuart2 {
 	status = "okay";
 };
 
-&i2c0 {
+&mmuart3 {
 	status = "okay";
 };
 
-&i2c1 {
+&mmuart4 {
 	status = "okay";
 };
 
-&i2c2 {
+&pcie {
 	status = "okay";
 };
 
-&mac0 {
-	phy-mode = "sgmii";
-	phy-handle = <&phy0>;
-};
-
-&mac1 {
+&qspi {
 	status = "okay";
-	phy-mode = "sgmii";
-	phy-handle = <&phy1>;
-	phy1: ethernet-phy@9 {
-		reg = <9>;
-		ti,fifo-depth = <0x1>;
-	};
-	phy0: ethernet-phy@8 {
-		reg = <8>;
-		ti,fifo-depth = <0x1>;
-	};
 };
 
-&gpio2 {
-	interrupts = <53>, <53>, <53>, <53>,
-		     <53>, <53>, <53>, <53>,
-		     <53>, <53>, <53>, <53>,
-		     <53>, <53>, <53>, <53>,
-		     <53>, <53>, <53>, <53>,
-		     <53>, <53>, <53>, <53>,
-		     <53>, <53>, <53>, <53>,
-		     <53>, <53>, <53>, <53>;
-	status = "okay";
+&refclk {
+	clock-frequency = <125000000>;
 };
 
 &rtc {
 	status = "okay";
 };
 
-&usb {
+&spi0 {
 	status = "okay";
-	dr_mode = "host";
 };
 
-&mbox {
+&spi1 {
 	status = "okay";
 };
 
@@ -152,10 +156,7 @@ &syscontroller {
 	status = "okay";
 };
 
-&pcie {
-	status = "okay";
-};
-
-&core_pwm0 {
+&usb {
 	status = "okay";
+	dr_mode = "host";
 };

arch/riscv/boot/dts/microchip/mpfs-polarberry-fabric.dtsi

+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/* Copyright (c) 2020-2022 Microchip Technology Inc */
+
+/ {
+	fabric_clk3: fabric-clk3 {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <62500000>;
+	};
+
+	fabric_clk1: fabric-clk1 {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <125000000>;
+	};
+};

arch/riscv/boot/dts/microchip/mpfs-polarberry.dts

+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/* Copyright (c) 2020-2022 Microchip Technology Inc */
+
+/dts-v1/;
+
+#include "mpfs.dtsi"
+#include "mpfs-polarberry-fabric.dtsi"
+
+/* Clock frequency (in Hz) of the rtcclk */
+#define MTIMER_FREQ	1000000
+
+/ {
+	model = "Sundance PolarBerry";
+	compatible = "sundance,polarberry", "microchip,mpfs";
+
+	aliases {
+		ethernet0 = &mac1;
+		serial0 = &mmuart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	cpus {
+		timebase-frequency = <MTIMER_FREQ>;
+	};
+
+	ddrc_cache_lo: memory@80000000 {
+		device_type = "memory";
+		reg = <0x0 0x80000000 0x0 0x2e000000>;
+	};
+
+	ddrc_cache_hi: memory@1000000000 {
+		device_type = "memory";
+		reg = <0x10 0x00000000 0x0 0xC0000000>;
+	};
+};
+
+/*
+ * phy0 is connected to mac0, but the port itself is on the (optional) carrier
+ * board.
+ */
+&mac0 {
+	phy-mode = "sgmii";
+	phy-handle = <&phy0>;
+	status = "disabled";
+};
+
+&mac1 {
+	phy-mode = "sgmii";
+	phy-handle = <&phy1>;
+	status = "okay";
+
+	phy1: ethernet-phy@5 {
+		reg = <5>;
+		ti,fifo-depth = <0x01>;
+	};
+
+	phy0: ethernet-phy@4 {
+		reg = <4>;
+		ti,fifo-depth = <0x01>;
+	};
+};
+
+&mbox {
+	status = "okay";
+};
+
+&mmc {
+	bus-width = <4>;
+	disable-wp;
+	cap-sd-highspeed;
+	cap-mmc-highspeed;
+	card-detect-delay = <200>;
+	mmc-ddr-1_8v;
+	mmc-hs200-1_8v;
+	sd-uhs-sdr12;
+	sd-uhs-sdr25;
+	sd-uhs-sdr50;
+	sd-uhs-sdr104;
+	status = "okay";
+};
+
+&mmuart0 {
+	status = "okay";
+};
+
+&refclk {
+	clock-frequency = <125000000>;
+};
+
+&rtc {
+	status = "okay";
+};
+
+&syscontroller {
+	status = "okay";
+};

arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi → arch/riscv/boot/dts/microchip/mpfs.dtsi

@@ -3,7 +3,6 @@
 
 /dts-v1/;
 #include "dt-bindings/clock/microchip,mpfs-clock.h"
-#include "microchip-mpfs-fabric.dtsi"
 
 / {
 	#address-cells = <2>;
@@ -146,6 +145,11 @@ refclk: mssrefclk {
 		#clock-cells = <0>;
 	};
 
+	syscontroller: syscontroller {
+		compatible = "microchip,mpfs-sys-controller";
+		mboxes = <&mbox 0>;
+	};
+
 	soc {
 		#address-cells = <2>;
 		#size-cells = <2>;
@@ -446,10 +450,5 @@ mbox: mailbox@37020000 {
 			#mbox-cells = <1>;
 			status = "disabled";
 		};
-
-		syscontroller: syscontroller {
-			compatible = "microchip,mpfs-sys-controller";
-			mboxes = <&mbox 0>;
-		};
 	};
 };