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Message-ID: <CAAhSdy0pW8AFCDtFkEO_4zjg8Exp+XTb09AjhErdX9u-Jw3OuQ@mail.gmail.com>
Date: Fri, 30 Oct 2020 14:35:30 +0530
From: Anup Patel <anup@...infault.org>
To: Atish Patra <atish.patra@....com>
Cc: "linux-kernel@...r.kernel.org List" <linux-kernel@...r.kernel.org>,
Albert Ou <aou@...s.berkeley.edu>,
Alistair Francis <alistair.francis@....com>,
Anup Patel <anup.patel@....com>, devicetree@...r.kernel.org,
linux-riscv <linux-riscv@...ts.infradead.org>,
Palmer Dabbelt <palmer@...belt.com>,
Paul Walmsley <paul.walmsley@...ive.com>,
Rob Herring <robh+dt@...nel.org>,
Padmarao Begari <padmarao.begari@...rochip.com>,
Daire McNamara <daire.mcnamara@...rochip.com>,
Cyril.Jean@...rochip.com
Subject: Re: [RFC PATCH 2/3] RISC-V: Initial DTS for Microchip ICICLE board
On Thu, Oct 29, 2020 at 4:58 AM Atish Patra <atish.patra@....com> wrote:
>
> Add initial DTS for Microchip ICICLE board having only
> essential devcies (clocks, sdhci, ethernet, serial, etc).
>
> Signed-off-by: Atish Patra <atish.patra@....com>
> ---
> arch/riscv/boot/dts/Makefile | 1 +
> arch/riscv/boot/dts/microchip/Makefile | 2 +
> .../microchip/microchip-icicle-kit-a000.dts | 313 ++++++++++++++++++
I suggest we split this DTS into two parts:
1. SOC (microchip-polarfire.dtsi)
2. Board (microchip-icicle-kit-a000.dts)
This will be much cleaner and aligned with what is done
on other architectures.
> 3 files changed, 316 insertions(+)
> create mode 100644 arch/riscv/boot/dts/microchip/Makefile
> create mode 100644 arch/riscv/boot/dts/microchip/microchip-icicle-kit-a000.dts
>
> diff --git a/arch/riscv/boot/dts/Makefile b/arch/riscv/boot/dts/Makefile
> index ca1f8cbd78c0..3ea94ea0a18a 100644
> --- a/arch/riscv/boot/dts/Makefile
> +++ b/arch/riscv/boot/dts/Makefile
> @@ -1,5 +1,6 @@
> # SPDX-License-Identifier: GPL-2.0
> subdir-y += sifive
> subdir-y += kendryte
> +subdir-y += microchip
>
> obj-$(CONFIG_BUILTIN_DTB) := $(addsuffix /, $(subdir-y))
> diff --git a/arch/riscv/boot/dts/microchip/Makefile b/arch/riscv/boot/dts/microchip/Makefile
> new file mode 100644
> index 000000000000..55ad77521304
> --- /dev/null
> +++ b/arch/riscv/boot/dts/microchip/Makefile
> @@ -0,0 +1,2 @@
> +# SPDX-License-Identifier: GPL-2.0
> +dtb-$(CONFIG_SOC_MICROCHIP_POLARFIRE) += microchip-icicle-kit-a000.dtb
> diff --git a/arch/riscv/boot/dts/microchip/microchip-icicle-kit-a000.dts b/arch/riscv/boot/dts/microchip/microchip-icicle-kit-a000.dts
> new file mode 100644
> index 000000000000..5848920af55c
> --- /dev/null
> +++ b/arch/riscv/boot/dts/microchip/microchip-icicle-kit-a000.dts
> @@ -0,0 +1,313 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/* Copyright (c) 2020 Microchip Technology Inc */
> +
> +/dts-v1/;
> +
> +/* Clock frequency (in Hz) of the rtcclk */
> +#define RTCCLK_FREQ 1000000
> +
> +/ {
> + #address-cells = <2>;
> + #size-cells = <2>;
> + model = "Microchip PolarFire-SoC";
> + compatible = "microchip,polarfire-soc";
> +
> + chosen {
> + stdout-path = &serial0;
> + };
> +
> + cpus {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + timebase-frequency = <RTCCLK_FREQ>;
> +
> + cpu@0 {
> + clock-frequency = <0>;
> + compatible = "sifive,rocket0", "riscv";
> + device_type = "cpu";
> + i-cache-block-size = <64>;
> + i-cache-sets = <128>;
> + i-cache-size = <16384>;
> + reg = <0>;
> + riscv,isa = "rv64imac";
> + status = "disabled";
> +
> + cpu0_intc: interrupt-controller {
> + #interrupt-cells = <1>;
> + compatible = "riscv,cpu-intc";
> + interrupt-controller;
> + };
> + };
> +
> + cpu@1 {
> + clock-frequency = <0>;
> + compatible = "sifive,rocket0", "riscv";
> + d-cache-block-size = <64>;
> + d-cache-sets = <64>;
> + d-cache-size = <32768>;
> + d-tlb-sets = <1>;
> + d-tlb-size = <32>;
> + device_type = "cpu";
> + i-cache-block-size = <64>;
> + i-cache-sets = <64>;
> + i-cache-size = <32768>;
> + i-tlb-sets = <1>;
> + i-tlb-size = <32>;
> + mmu-type = "riscv,sv39";
> + reg = <1>;
> + riscv,isa = "rv64imafdc";
> + tlb-split;
> + status = "okay";
> +
> + cpu1_intc: interrupt-controller {
> + #interrupt-cells = <1>;
> + compatible = "riscv,cpu-intc";
> + interrupt-controller;
> + };
> + };
> +
> + cpu@2 {
> + clock-frequency = <0>;
> + compatible = "sifive,rocket0", "riscv";
> + d-cache-block-size = <64>;
> + d-cache-sets = <64>;
> + d-cache-size = <32768>;
> + d-tlb-sets = <1>;
> + d-tlb-size = <32>;
> + device_type = "cpu";
> + i-cache-block-size = <64>;
> + i-cache-sets = <64>;
> + i-cache-size = <32768>;
> + i-tlb-sets = <1>;
> + i-tlb-size = <32>;
> + mmu-type = "riscv,sv39";
> + reg = <2>;
> + riscv,isa = "rv64imafdc";
> + tlb-split;
> + status = "okay";
> +
> + cpu2_intc: interrupt-controller {
> + #interrupt-cells = <1>;
> + compatible = "riscv,cpu-intc";
> + interrupt-controller;
> + };
> + };
> +
> + cpu@3 {
> + clock-frequency = <0>;
> + compatible = "sifive,rocket0", "riscv";
> + d-cache-block-size = <64>;
> + d-cache-sets = <64>;
> + d-cache-size = <32768>;
> + d-tlb-sets = <1>;
> + d-tlb-size = <32>;
> + device_type = "cpu";
> + i-cache-block-size = <64>;
> + i-cache-sets = <64>;
> + i-cache-size = <32768>;
> + i-tlb-sets = <1>;
> + i-tlb-size = <32>;
> + mmu-type = "riscv,sv39";
> + reg = <3>;
> + riscv,isa = "rv64imafdc";
> + tlb-split;
> + status = "okay";
> +
> + cpu3_intc: interrupt-controller {
> + #interrupt-cells = <1>;
> + compatible = "riscv,cpu-intc";
> + interrupt-controller;
> + };
> + };
> +
> + cpu@4 {
> + clock-frequency = <0>;
> + compatible = "sifive,rocket0", "riscv";
> + d-cache-block-size = <64>;
> + d-cache-sets = <64>;
> + d-cache-size = <32768>;
> + d-tlb-sets = <1>;
> + d-tlb-size = <32>;
> + device_type = "cpu";
> + i-cache-block-size = <64>;
> + i-cache-sets = <64>;
> + i-cache-size = <32768>;
> + i-tlb-sets = <1>;
> + i-tlb-size = <32>;
> + mmu-type = "riscv,sv39";
> + reg = <4>;
> + riscv,isa = "rv64imafdc";
> + tlb-split;
> + status = "okay";
> + cpu4_intc: interrupt-controller {
> + #interrupt-cells = <1>;
> + compatible = "riscv,cpu-intc";
> + interrupt-controller;
> + };
> + };
> + };
> +
> + memory@...00000 {
> + device_type = "memory";
> + reg = <0x0 0x80000000 0x0 0x40000000>;
> + clocks = <&clkcfg 26>;
> + };
> +
> + soc {
> + #address-cells = <2>;
> + #size-cells = <2>;
> + compatible = "simple-bus";
> + ranges;
> +
> + cache-controller@...0000 {
> + compatible = "sifive,fu540-c000-ccache", "cache";
> + cache-block-size = <64>;
> + cache-level = <2>;
> + cache-sets = <1024>;
> + cache-size = <2097152>;
> + cache-unified;
> + interrupt-parent = <&plic>;
> + interrupts = <1 2 3>;
> + reg = <0x0 0x2010000 0x0 0x1000>;
> + };
> +
> + clint@...0000 {
> + compatible = "riscv,clint0";
> + reg = <0x0 0x2000000 0x0 0xC000>;
> + interrupts-extended = <&cpu0_intc 3 &cpu0_intc 7
> + &cpu1_intc 3 &cpu1_intc 7
> + &cpu2_intc 3 &cpu2_intc 7
> + &cpu3_intc 3 &cpu3_intc 7
> + &cpu4_intc 3 &cpu4_intc 7>;
> + };
> +
> + plic: interrupt-controller@...0000 {
> + #interrupt-cells = <1>;
> + compatible = "sifive,plic-1.0.0";
> + reg = <0x0 0xc000000 0x0 0x4000000>;
> + riscv,ndev = <53>;
> + interrupt-controller;
> + interrupts-extended = <&cpu0_intc 11
> + &cpu1_intc 11 &cpu1_intc 9
> + &cpu2_intc 11 &cpu2_intc 9
> + &cpu3_intc 11 &cpu3_intc 9
> + &cpu4_intc 11 &cpu4_intc 9>;
> + };
> +
> + dma@...0000 {
> + compatible = "sifive,fu540-c000-pdma";
> + reg = <0x0 0x3000000 0x0 0x8000>;
> + interrupt-parent = <&plic>;
> + interrupts = <23 24 25 26 27 28 29 30>;
> + #dma-cells = <1>;
> + };
> +
> + refclk: refclk {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <600000000>;
> + clock-output-names = "msspllclk";
> + };
> +
> + clkcfg: clkcfg@...02000 {
> + compatible = "microchip,pfsoc-clkcfg";
> + reg = <0x0 0x20002000 0x0 0x1000>;
> + reg-names = "mss_sysreg";
> + clocks = <&refclk>;
> + #clock-cells = <1>;
> + clock-output-names = "cpuclk", "axiclk", "ahbclk", "ENVMclk", "MAC0clk", "MAC1clk", "MMCclk", "TIMERclk", "MMUART0clk", "MMUART1clk", "MMUART2clk", "MMUART3clk", "MMUART4clk", "SPI0clk", "SPI1clk", "I2C0clk", "I2C1clk", "CAN0clk", "CAN1clk", "USBclk", "RESERVED", "RTCclk", "QSPIclk", "GPIO0clk", "GPIO1clk", "GPIO2clk", "DDRCclk", "FIC0clk", "FIC1clk", "FIC2clk", "FIC3clk", "ATHENAclk", "CFMclk";
> + };
> +
> + serial0: serial@...00000 {
> + compatible = "ns16550a";
> + reg = <0x0 0x20000000 0x0 0x400>;
> + reg-io-width = <4>;
> + reg-shift = <2>;
> + interrupt-parent = <&plic>;
> + interrupts = <90>;
> + current-speed = <115200>;
> + clocks = <&clkcfg 8>;
> + status = "okay";
> + };
> +
> + serial1: serial@...00000 {
> + compatible = "ns16550a";
> + reg = <0x0 0x20100000 0x0 0x400>;
> + reg-io-width = <4>;
> + reg-shift = <2>;
> + interrupt-parent = <&plic>;
> + interrupts = <91>;
> + current-speed = <115200>;
> + clocks = <&clkcfg 9>;
> + status = "okay";
> + };
> +
> + serial2: serial@...02000 {
> + compatible = "ns16550a";
> + reg = <0x0 0x20102000 0x0 0x400>;
> + reg-io-width = <4>;
> + reg-shift = <2>;
> + interrupt-parent = <&plic>;
> + interrupts = <92>;
> + current-speed = <115200>;
> + clocks = <&clkcfg 10>;
> + status = "okay";
> + };
> +
> + serial3: serial@...04000 {
> + compatible = "ns16550a";
> + reg = <0x0 0x20104000 0x0 0x400>;
> + reg-io-width = <4>;
> + reg-shift = <2>;
> + interrupt-parent = <&plic>;
> + interrupts = <93>;
> + current-speed = <115200>;
> + clocks = <&clkcfg 11>;
> + status = "okay";
> + };
> +
> + sdcard: sdhc@...08000 {
> + compatible = "cdns,sd4hc";
> + reg = <0x0 0x20008000 0x0 0x1000>;
> + interrupt-parent = <&plic>;
> + interrupts = <88>;
> + pinctrl-names = "default";
> + clocks = <&clkcfg 6>;
> + bus-width = <4>;
> + disable-wp;
> + no-1-8-v;
> + cap-mmc-highspeed;
> + cap-sd-highspeed;
> + card-detect-delay = <200>;
> + sd-uhs-sdr12;
> + sd-uhs-sdr25;
> + sd-uhs-sdr50;
> + sd-uhs-sdr104;
> + max-frequency = <200000000>;
> + status = "okay";
> + };
> +
> + emac1: ethernet@...12000 {
> + compatible = "cdns,macb";
> + reg = <0x0 0x20112000 0x0 0x2000>;
> + interrupt-parent = <&plic>;
> + interrupts = <70 71 72 73>;
> + mac-address = [56 34 12 00 FC 00];
> + phy-mode = "sgmii";
> + clocks = <&clkcfg 5>, <&clkcfg 2>;
> + clock-names = "pclk", "hclk";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + phy1: ethernet-phy@9 {
> + reg = <9>;
> + ti,fifo-depth = <0x01>;
> + };
> + };
> +
> + uio_axi_lsram@...0000000 {
> + compatible = "generic-uio";
> + reg = <0x20 0x30000000 0 0x80000000 >;
> + status = "okay";
> + };
> + };
> +};
> --
> 2.25.1
>
Regards,
Anup
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