Re: [PATCH 4/4] arm64: dts: agilex5: Add initial support for Intel's Agilex5 SoCFPGA

[Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>]

On 18/06/2023 15:22, niravkumar.l.rabara@intel.com wrote:
> From: Niravkumar L Rabara <niravkumar.l.rabara@intel.com>
> 
> Add the initial device tree files for Intel's Agilex5 SoCFPGA platform.
> 
> Signed-off-by: Adrian Ng Ho Yin <adrian.ho.yin.ng@intel.com>
> Signed-off-by: Niravkumar L Rabara <niravkumar.l.rabara@intel.com>
> ---
>  arch/arm64/boot/dts/intel/Makefile            |   3 +
>  .../arm64/boot/dts/intel/socfpga_agilex5.dtsi | 641 ++++++++++++++++++
>  .../boot/dts/intel/socfpga_agilex5_socdk.dts  | 184 +++++
>  .../dts/intel/socfpga_agilex5_socdk_nand.dts  | 131 ++++
>  .../dts/intel/socfpga_agilex5_socdk_swvp.dts  | 248 +++++++
>  5 files changed, 1207 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi
>  create mode 100644 arch/arm64/boot/dts/intel/socfpga_agilex5_socdk.dts
>  create mode 100644 arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_nand.dts
>  create mode 100644 arch/arm64/boot/dts/intel/socfpga_agilex5_socdk_swvp.dts
> 
> diff --git a/arch/arm64/boot/dts/intel/Makefile b/arch/arm64/boot/dts/intel/Makefile
> index c2a723838344..bb74a7e30e58 100644
> --- a/arch/arm64/boot/dts/intel/Makefile
> +++ b/arch/arm64/boot/dts/intel/Makefile
> @@ -2,5 +2,8 @@
>  dtb-$(CONFIG_ARCH_INTEL_SOCFPGA) += socfpga_agilex_n6000.dtb \
>  				socfpga_agilex_socdk.dtb \
>  				socfpga_agilex_socdk_nand.dtb \
> +				socfpga_agilex5_socdk.dtb \
> +				socfpga_agilex5_socdk_nand.dtb \
> +				socfpga_agilex5_socdk_swvp.dtb \
>  				socfpga_n5x_socdk.dtb
>  dtb-$(CONFIG_ARCH_KEEMBAY) += keembay-evm.dtb
> diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi b/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi
> new file mode 100644
> index 000000000000..9454d88d6457
> --- /dev/null
> +++ b/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi
> @@ -0,0 +1,641 @@
> +// SPDX-License-Identifier:     GPL-2.0

Drop indent before license.

> +/*
> + * Copyright (C) 2023, Intel Corporation
> + */
> +
> +/dts-v1/;
> +#include <dt-bindings/reset/altr,rst-mgr-agilex5.h>
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +#include <dt-bindings/interrupt-controller/irq.h>
> +#include <dt-bindings/clock/agilex5-clock.h>
> +
> +/ {
> +	compatible = "intel,socfpga-agilex";
> +	#address-cells = <2>;
> +	#size-cells = <2>;
> +
> +	reserved-memory {
> +		#address-cells = <2>;
> +		#size-cells = <2>;
> +		ranges;
> +
> +		service_reserved: svcbuffer@0 {
> +			compatible = "shared-dma-pool";
> +			reg = <0x0 0x80000000 0x0 0x2000000>;
> +			alignment = <0x1000>;
> +			no-map;
> +		};
> +	};
> +
> +	cpus {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		cpu0: cpu@0 {
> +			compatible = "arm,cortex-a55";
> +			device_type = "cpu";
> +			enable-method = "psci";
> +			reg = <0x0>;
> +		};
> +
> +		cpu1: cpu@1 {
> +			compatible = "arm,cortex-a55";
> +			device_type = "cpu";
> +			enable-method = "psci";
> +			reg = <0x100>;
> +		};
> +
> +		cpu2: cpu@2 {
> +			compatible = "arm,cortex-a76";
> +			device_type = "cpu";
> +			enable-method = "psci";
> +			reg = <0x200>;
> +		};
> +
> +		cpu3: cpu@3 {
> +			compatible = "arm,cortex-a76";
> +			device_type = "cpu";
> +			enable-method = "psci";
> +			reg = <0x300>;
> +		};
> +	};
> +
> +	psci {
> +		compatible = "arm,psci-0.2";
> +		method = "smc";
> +	};
> +
> +	intc: interrupt-controller@1d000000 {
> +		compatible = "arm,gic-v3", "arm,cortex-a15-gic";

reg is always after compatible. Then ranges, if applicable.

> +		#interrupt-cells = <3>;
> +		#address-cells = <2>;
> +		#size-cells =<2>;
> +		interrupt-controller;
> +		#redistributor-regions = <1>;
> +		label = "GIC";

It does not look like you tested the DTS against bindings. Please run
`make dtbs_check` (see
Documentation/devicetree/bindings/writing-schema.rst or
https://www.linaro.org/blog/tips-and-tricks-for-validating-devicetree-sources-with-the-devicetree-schema/
for instructions).

> +		status = "okay";

Drop, you don't need status.

> +		ranges;
> +		redistributor-stride = <0x0 0x20000>;
> +		reg = <0x0 0x1d000000 0 0x10000>,
> +			<0x0 0x1d060000 0 0x100000>;
> +
> +		its: msi-controller@1d040000 {
> +			compatible = "arm,gic-v3-its";
> +			reg = <0x0 0x1d040000 0x0 0x20000>;
> +			label = "ITS";
> +			msi-controller;
> +			status = "okay";

Drop

Anyway, entire node should be in soc. You clearly did not test it with
dtbs W=1. Neither with dtbs_check.


> +		};
> +	};
> +
> +	/* Clock tree 5 main sources*/
> +	clocks {
> +		cb_intosc_hs_div2_clk: cb-intosc-hs-div2-clk {
> +			#clock-cells = <0>;
> +			compatible = "fixed-clock";
> +		};
> +
> +		cb_intosc_ls_clk: cb-intosc-ls-clk {
> +			#clock-cells = <0>;
> +			compatible = "fixed-clock";
> +		};
> +
> +		f2s_free_clk: f2s-free-clk {
> +			#clock-cells = <0>;
> +			compatible = "fixed-clock";
> +		};
> +
> +		osc1: osc1 {
> +			#clock-cells = <0>;
> +			compatible = "fixed-clock";
> +		};
> +
> +		qspi_clk: qspi-clk {
> +			#clock-cells = <0>;
> +			compatible = "fixed-clock";
> +			clock-frequency = <200000000>;
> +		};
> +	};
> +
> +	timer {
> +		compatible = "arm,armv8-timer";
> +		interrupt-parent = <&intc>;
> +		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
> +			     <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
> +			     <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
> +			     <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
> +	};
> +
> +	usbphy0: usbphy {
> +		#phy-cells = <0>;
> +		compatible = "usb-nop-xceiv";
> +	};
> +
> +	soc {
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		compatible = "simple-bus";
> +		device_type = "soc";
> +		interrupt-parent = <&intc>;
> +		ranges = <0 0 0 0xffffffff>;
> +
> +		clkmgr: clock-controller@10d10000 {
> +			compatible = "intel,agilex5-clkmgr";
> +			reg = <0x10d10000 0x1000>;
> +			#clock-cells = <1>;
> +		};
> +
> +		stmmac_axi_setup: stmmac-axi-config {
> +			snps,wr_osr_lmt = <31>;
> +			snps,rd_osr_lmt = <31>;
> +			snps,blen = <0 0 0 32 16 8 4>;
> +		};
> +
> +		mtl_rx_setup: rx-queues-config {

These two nodes do not belong to SoC. Soc is for MMIO-based nodes.


> +			snps,rx-queues-to-use = <8>;
> +			snps,rx-sched-sp;
> +			queue0 {
> +				snps,dcb-algorithm;
> +				snps,map-to-dma-channel = <0x0>;
> +			};
> +			queue1 {
> +				snps,dcb-algorithm;
> +				snps,map-to-dma-channel = <0x1>;
> +			};
> +			queue2 {
> +				snps,dcb-algorithm;
> +				snps,map-to-dma-channel = <0x2>;
> +			};
> +			queue3 {
> +				snps,dcb-algorithm;
> +				snps,map-to-dma-channel = <0x3>;
> +			};
> +			queue4 {
> +				snps,dcb-algorithm;
> +				snps,map-to-dma-channel = <0x4>;
> +			};
> +			queue5 {
> +				snps,dcb-algorithm;
> +				snps,map-to-dma-channel = <0x5>;
> +			};
> +			queue6 {
> +				snps,dcb-algorithm;
> +				snps,map-to-dma-channel = <0x6>;
> +			};
> +			queue7 {
> +				snps,dcb-algorithm;
> +				snps,map-to-dma-channel = <0x7>;
> +			};
> +		};
> +
> +		mtl_tx_setup: tx-queues-config {

This as well

> +			snps,tx-queues-to-use = <8>;
> +			snps,tx-sched-wrr;
> +			queue0 {
> +				snps,weight = <0x09>;
> +				snps,dcb-algorithm;
> +			};
> +			queue1 {
> +				snps,weight = <0x0A>;
> +				snps,dcb-algorithm;
> +			};
> +			queue2 {
> +				snps,weight = <0x0B>;
> +				snps,dcb-algorithm;
> +			};
> +			queue3 {
> +				snps,weight = <0x0C>;
> +				snps,dcb-algorithm;
> +			};
> +			queue4 {
> +				snps,weight = <0x0D>;
> +				snps,dcb-algorithm;
> +			};
> +			queue5 {
> +				snps,weight = <0x0E>;
> +				snps,dcb-algorithm;
> +			};
> +			queue6 {
> +				snps,weight = <0x0F>;
> +				snps,dcb-algorithm;
> +			};
> +			queue7 {
> +				snps,weight = <0x10>;
> +				snps,dcb-algorithm;
> +			};
> +		};
> +
> +		gmac0: ethernet@10810000 {
> +			compatible = "altr,socfpga-stmmac-a10-s10",
> +						"snps,dwxgmac-2.10",
> +						"snps,dwxgmac";

You have broken alignment.

> +			reg = <0x10810000 0x3500>;
> +			interrupts = <GIC_SPI 190 IRQ_TYPE_LEVEL_HIGH>,
> +						<GIC_SPI 191 IRQ_TYPE_LEVEL_HIGH>,
> +						<GIC_SPI 192 IRQ_TYPE_LEVEL_HIGH>,

In multiple places. Really.

> +						<GIC_SPI 193 IRQ_TYPE_LEVEL_HIGH>,
> +						<GIC_SPI 194 IRQ_TYPE_LEVEL_HIGH>,
> +						<GIC_SPI 195 IRQ_TYPE_LEVEL_HIGH>,
> +						<GIC_SPI 196 IRQ_TYPE_LEVEL_HIGH>,
> +						<GIC_SPI 197 IRQ_TYPE_LEVEL_HIGH>,
> +						<GIC_SPI 198 IRQ_TYPE_LEVEL_HIGH>,
> +						<GIC_SPI 199 IRQ_TYPE_LEVEL_HIGH>,
> +						<GIC_SPI 200 IRQ_TYPE_LEVEL_HIGH>,
> +						<GIC_SPI 201 IRQ_TYPE_LEVEL_HIGH>,
> +						<GIC_SPI 202 IRQ_TYPE_LEVEL_HIGH>,
> +						<GIC_SPI 203 IRQ_TYPE_LEVEL_HIGH>,
> +						<GIC_SPI 204 IRQ_TYPE_LEVEL_HIGH>,
> +						<GIC_SPI 205 IRQ_TYPE_LEVEL_HIGH>,
> +						<GIC_SPI 206 IRQ_TYPE_LEVEL_HIGH>;
> +			interrupt-names = "macirq",
> +							"macirq_tx0",

This is ugly.

> +							"macirq_tx1",
> +							"macirq_tx2",
> +							"macirq_tx3",
> +							"macirq_tx4",
> +							"macirq_tx5",
> +							"macirq_tx6",
> +							"macirq_tx7",
> +							"macirq_rx0",
> +							"macirq_rx1",
> +							"macirq_rx2",
> +							"macirq_rx3",
> +							"macirq_rx4",
> +							"macirq_rx5",
> +							"macirq_rx6",
> +							"macirq_rx7";
> +			mac-address = [00 00 00 00 00 00];

Drop, it's SoC file.

> +			resets = <&rst EMAC0_RESET>, <&rst EMAC0_OCP_RESET>;
> +			reset-names = "stmmaceth", "stmmaceth-ocp";
> +			tx-fifo-depth = <32768>;
> +			rx-fifo-depth = <16384>;
> +			snps,multicast-filter-bins = <64>;
> +			snps,perfect-filter-entries = <64>;
> +			snps,axi-config = <&stmmac_axi_setup>;
> +			snps,mtl-rx-config = <&mtl_rx_setup>;
> +			snps,mtl-tx-config = <&mtl_tx_setup>;
> +			snps,pbl = <32>;
> +			snps,pblx8;
> +			snps,multi-irq-en;
> +			snps,tso;
> +			altr,sysmgr-syscon = <&sysmgr 0x44 0>;
> +			altr,smtg-hub;
> +			snps,rx-vlan-offload;
> +			clocks = <&clkmgr AGILEX5_EMAC0_CLK>, <&clkmgr AGILEX5_EMAC_PTP_CLK>;
> +			clock-names = "stmmaceth", "ptp_ref";
> +			status = "disabled";
> +		};
> +
> +		i2c0: i2c@10c02800 {
> +			#address-cells = <1>;
> +			#size-cells = <0>;

compatible first, reg second.

> +			compatible = "snps,designware-i2c";
> +			reg = <0x10c02800 0x100>;
> +			interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>;
> +			resets = <&rst I2C0_RESET>;
> +			clocks = <&clkmgr AGILEX5_L4_SP_CLK>;
> +			status = "disabled";
> +		};
> +
> +		i2c1: i2c@10c02900 {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			compatible = "snps,designware-i2c";
> +			reg = <0x10c02900 0x100>;
> +			interrupts = <GIC_SPI 104 IRQ_TYPE_LEVEL_HIGH>;
> +			resets = <&rst I2C1_RESET>;
> +			clocks = <&clkmgr AGILEX5_L4_SP_CLK>;
> +			status = "disabled";
> +		};
> +
> +		i2c2: i2c@10c02a00 {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			compatible = "snps,designware-i2c";
> +			reg = <0x10c02a00 0x100>;
> +			interrupts = <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>;
> +			resets = <&rst I2C2_RESET>;
> +			clocks = <&clkmgr AGILEX5_L4_SP_CLK>;
> +			status = "disabled";
> +		};
> +
> +		i2c3: i2c@10c02b00 {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			compatible = "snps,designware-i2c";
> +			reg = <0x10c02b00 0x100>;
> +			interrupts = <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>;
> +			resets = <&rst I2C3_RESET>;
> +			clocks = <&clkmgr AGILEX5_L4_SP_CLK>;
> +			status = "disabled";
> +		};
> +
> +		i2c4: i2c@10c02c00 {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			compatible = "snps,designware-i2c";
> +			reg = <0x10c02c00 0x100>;
> +			interrupts = <GIC_SPI 107 IRQ_TYPE_LEVEL_HIGH>;
> +			resets = <&rst I2C4_RESET>;
> +			clocks = <&clkmgr AGILEX5_L4_SP_CLK>;
> +			status = "disabled";
> +		};
> +
> +		i3c0: i3c@10da0000 {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			compatible = "snps,dw-i3c-master-1.00a";
> +			reg = <0x10da0000 0x1000>;
> +			interrupts = <GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>;
> +			resets = <&rst I3C0_RESET>;
> +			clocks = <&clkmgr AGILEX5_L4_MP_CLK>;
> +			status = "disabled";
> +		};
> +
> +		i3c1: i3c@10da1000 {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			compatible = "snps,dw-i3c-master-1.00a";
> +			reg = <0x10da1000 0x1000>;
> +			interrupts = <GIC_SPI 165 IRQ_TYPE_LEVEL_HIGH>;
> +			resets = <&rst I3C1_RESET>;
> +			clocks = <&clkmgr AGILEX5_L4_MP_CLK>;
> +			status = "disabled";
> +		};
> +
> +		gpio1: gpio@10C03300 {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			compatible = "snps,dw-apb-gpio";
> +			reg = <0x10C03300 0x100>;
> +			resets = <&rst GPIO1_RESET>;
> +			status = "disabled";
> +
> +			portb: gpio-controller@0 {
> +				compatible = "snps,dw-apb-gpio-port";
> +				gpio-controller;
> +				#gpio-cells = <2>;
> +				snps,nr-gpios = <24>;
> +				reg = <0>;
> +				interrupt-controller;
> +				#interrupt-cells = <2>;
> +				interrupts = <GIC_SPI 111 IRQ_TYPE_LEVEL_HIGH>;
> +			};
> +		};
> +
> +		mmc: mmc0@10808000 {

It does not look like you tested the DTS against bindings. Please run
`make dtbs_check` (see
Documentation/devicetree/bindings/writing-schema.rst or
https://www.linaro.org/blog/tips-and-tricks-for-validating-devicetree-sources-with-the-devicetree-schema/
for instructions).

Sorry, but your DTS lacks any basic (internal!) review and basic tests
with automated tools.

..

> +		spi0: spi@10da4000 {
> +			compatible = "snps,dw-apb-ssi";
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			reg = <0x10da4000 0x1000>;
> +			interrupts = <GIC_SPI 99 IRQ_TYPE_LEVEL_HIGH>;
> +			resets = <&rst SPIM0_RESET>;
> +			reset-names = "spi";
> +			reg-io-width = <4>;
> +			num-cs = <4>;
> +			clocks = <&clkmgr AGILEX5_L4_MAIN_CLK>;
> +			dmas = <&dmac0 2>, <&dmac0 3>;
> +			dma-names ="tx", "rx";
> +
> +			status = "disabled";
> +
> +			flash: m25p128@0 {

It's getting worse...

> +				status = "okay";

and worse

> +				compatible = "st,m25p80";
> +				spi-max-frequency = <25000000>;
> +				m25p,fast-read;
> +				reg = <0>;
> +
> +				#address-cells = <1>;
> +				#size-cells = <1>;
> +
> +				partition@0 {
> +				label = "spi_flash_part0";
> +				reg = <0x0 0x100000>;

and less conforming to style

> +				};
> +			};
> +

... and less.
...

> +
> +	chosen {
> +		stdout-path = "serial0:115200n8";
> +		bootargs = "console=uart8250,mmio32,0x10c02000,115200n8 \
> +			root=/dev/ram0 rw initrd=0x10000000 init=/sbin/init \
> +			ramdisk_size=10000000 earlycon=uart8250,mmio32,0x10c02000,115200n8 \
> +			panic=-1 nosmp rootfstype=ext3";

NAK. Drop entire bootags.

> +	};
> +
> +	leds {
> +		compatible = "gpio-leds";
> +		hps0 {

No, srsly? So all our cleanups for few years mean nothing?

Best regards,
Krzysztof