> -----Original Message-----
> From: Shengyu Qu <wiagn233@xxxxxxxxxxx>
> Sent: Friday, December 8, 2023 8:09 PM
> To: JeeHeng Sia <jeeheng.sia@xxxxxxxxxxxxxxxx>; kernel@xxxxxxxx; robh+dt@xxxxxxxxxx; krzysztof.kozlowski+dt@xxxxxxxxxx;
> krzk@xxxxxxxxxx; conor+dt@xxxxxxxxxx; paul.walmsley@xxxxxxxxxx; palmer@xxxxxxxxxxx; aou@xxxxxxxxxxxxxxxxx;
> daniel.lezcano@xxxxxxxxxx; tglx@xxxxxxxxxxxxx; conor@xxxxxxxxxx; anup@xxxxxxxxxxxxxx; gregkh@xxxxxxxxxxxxxxxxxxx;
> jirislaby@xxxxxxxxxx; michal.simek@xxxxxxx; Michael Zhu <michael.zhu@xxxxxxxxxxxxxxxx>; drew@xxxxxxxxxxxxxxx
> Cc: wiagn233@xxxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx; linux-riscv@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Leyfoon Tan
> <leyfoon.tan@xxxxxxxxxxxxxxxx>
> Subject: Re: [PATCH v3 6/6] riscv: dts: starfive: Add initial StarFive JH8100 device tree
>
> Hello Sia,
Hi Shengyu
>
> Does the dubhe-80 cores actually support vector? Or vector support
>
> doesn't exist on actual silicon?
We don't have a use case for vector application in JH8100
>
> Best regards,
>
> Shengyu
>
> > Add initial device tree for the StarFive JH8100 RISC-V SoC.
> >
> > Signed-off-by: Sia Jee Heng <jeeheng.sia@xxxxxxxxxxxxxxxx>
> > Reviewed-by: Ley Foon Tan <leyfoon.tan@xxxxxxxxxxxxxxxx>
> > ---
> > arch/riscv/boot/dts/starfive/Makefile | 2 +
> > arch/riscv/boot/dts/starfive/jh8100-evb.dts | 28 ++
> > arch/riscv/boot/dts/starfive/jh8100.dtsi | 378 ++++++++++++++++++++
> > 3 files changed, 408 insertions(+)
> > create mode 100644 arch/riscv/boot/dts/starfive/jh8100-evb.dts
> > create mode 100644 arch/riscv/boot/dts/starfive/jh8100.dtsi
> >
> > diff --git a/arch/riscv/boot/dts/starfive/Makefile b/arch/riscv/boot/dts/starfive/Makefile
> > index 0141504c0f5c..ef5c7331c7ec 100644
> > --- a/arch/riscv/boot/dts/starfive/Makefile
> > +++ b/arch/riscv/boot/dts/starfive/Makefile
> > @@ -10,3 +10,5 @@ dtb-$(CONFIG_ARCH_STARFIVE) += jh7100-starfive-visionfive-v1.dtb
> >
> > dtb-$(CONFIG_ARCH_STARFIVE) += jh7110-starfive-visionfive-2-v1.2a.dtb
> > dtb-$(CONFIG_ARCH_STARFIVE) += jh7110-starfive-visionfive-2-v1.3b.dtb
> > +
> > +dtb-$(CONFIG_ARCH_STARFIVE) += jh8100-evb.dtb
> > diff --git a/arch/riscv/boot/dts/starfive/jh8100-evb.dts b/arch/riscv/boot/dts/starfive/jh8100-evb.dts
> > new file mode 100644
> > index 000000000000..c16bc25d8988
> > --- /dev/null
> > +++ b/arch/riscv/boot/dts/starfive/jh8100-evb.dts
> > @@ -0,0 +1,28 @@
> > +// SPDX-License-Identifier: GPL-2.0 OR MIT
> > +/*
> > + * Copyright (c) 2021-2023 StarFive Technology Co., Ltd.
> > + */
> > +
> > +#include "jh8100.dtsi"
> > +
> > +/ {
> > + model = "StarFive JH8100 EVB";
> > + compatible = "starfive,jh8100-evb", "starfive,jh8100";
> > +
> > + aliases {
> > + serial0 = &uart0;
> > + };
> > +
> > + chosen {
> > + stdout-path = "serial0:115200n8";
> > + };
> > +
> > + memory@40000000 {
> > + device_type = "memory";
> > + reg = <0x0 0x40000000 0x2 0x00000000>;
> > + };
> > +};
> > +
> > +&uart0 {
> > + status = "okay";
> > +};
> > diff --git a/arch/riscv/boot/dts/starfive/jh8100.dtsi b/arch/riscv/boot/dts/starfive/jh8100.dtsi
> > new file mode 100644
> > index 000000000000..f26aff5c1ddf
> > --- /dev/null
> > +++ b/arch/riscv/boot/dts/starfive/jh8100.dtsi
> > @@ -0,0 +1,378 @@
> > +// SPDX-License-Identifier: GPL-2.0 OR MIT
> > +/*
> > + * Copyright (c) 2021-2023 StarFive Technology Co., Ltd.
> > + */
> > +
> > +/dts-v1/;
> > +
> > +/ {
> > + compatible = "starfive,jh8100";
> > + #address-cells = <2>;
> > + #size-cells = <2>;
> > +
> > + cpus {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + timebase-frequency = <4000000>;
> > +
> > + cpu0: cpu@0 {
> > + compatible = "starfive,dubhe-80", "riscv";
> > + capacity-dmips-mhz = <768>;
> > + d-cache-block-size = <64>;
> > + d-cache-sets = <512>;
> > + d-cache-size = <32768>;
> > + d-tlb-sets = <1>;
> > + d-tlb-size = <48>;
> > + device_type = "cpu";
> > + i-cache-block-size = <64>;
> > + i-cache-sets = <512>;
> > + i-cache-size = <32768>;
> > + i-tlb-sets = <1>;
> > + i-tlb-size = <48>;
> > + mmu-type = "riscv,sv48";
> > + next-level-cache = <&l2c0>;
> > + reg = <0x0>;
> > + riscv,isa = "rv64imafdch";
> > + riscv,isa-base = "rv64i";
> > + riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "h", "zicntr",
> > + "zicsr", "zifencei", "zihintpause", "zihpm",
> > + "zba", "zbb", "zbs", "sscofpmf";
> > + tlb-split;
> > +
> > + cpu0_intc: interrupt-controller {
> > + compatible = "riscv,cpu-intc";
> > + interrupt-controller;
> > + #interrupt-cells = <1>;
> > + };
> > + };
> > +
> > + cpu1: cpu@1 {
> > + compatible = "starfive,dubhe-80", "riscv";
> > + capacity-dmips-mhz = <768>;
> > + d-cache-block-size = <64>;
> > + d-cache-sets = <512>;
> > + d-cache-size = <32768>;
> > + d-tlb-sets = <1>;
> > + d-tlb-size = <48>;
> > + device_type = "cpu";
> > + i-cache-block-size = <64>;
> > + i-cache-sets = <512>;
> > + i-cache-size = <32768>;
> > + i-tlb-sets = <1>;
> > + i-tlb-size = <48>;
> > + mmu-type = "riscv,sv48";
> > + next-level-cache = <&l2c1>;
> > + reg = <0x1>;
> > + riscv,isa = "rv64imafdch";
> > + riscv,isa-base = "rv64i";
> > + riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "h", "zicntr",
> > + "zicsr", "zifencei", "zihintpause", "zihpm",
> > + "zba", "zbb", "zbs", "sscofpmf";
> > + tlb-split;
> > +
> > + cpu1_intc: interrupt-controller {
> > + compatible = "riscv,cpu-intc";
> > + interrupt-controller;
> > + #interrupt-cells = <1>;
> > + };
> > + };
> > +
> > + cpu2: cpu@2 {
> > + compatible = "starfive,dubhe-90", "riscv";
> > + capacity-dmips-mhz = <1024>;
> > + d-cache-block-size = <64>;
> > + d-cache-sets = <1024>;
> > + d-cache-size = <65536>;
> > + d-tlb-sets = <1>;
> > + d-tlb-size = <48>;
> > + device_type = "cpu";
> > + i-cache-block-size = <64>;
> > + i-cache-sets = <1024>;
> > + i-cache-size = <65536>;
> > + i-tlb-sets = <1>;
> > + i-tlb-size = <48>;
> > + mmu-type = "riscv,sv48";
> > + next-level-cache = <&l2c2>;
> > + reg = <0x2>;
> > + riscv,isa = "rv64imafdch";
> > + riscv,isa-base = "rv64i";
> > + riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "h", "zicntr",
> > + "zicsr", "zifencei", "zihintpause", "zihpm",
> > + "zba", "zbb", "zbs", "sscofpmf";
> > + tlb-split;
> > +
> > + cpu2_intc: interrupt-controller {
> > + compatible = "riscv,cpu-intc";
> > + interrupt-controller;
> > + #interrupt-cells = <1>;
> > + };
> > + };
> > +
> > + cpu3: cpu@3 {
> > + compatible = "starfive,dubhe-90", "riscv";
> > + capacity-dmips-mhz = <1024>;
> > + d-cache-block-size = <64>;
> > + d-cache-sets = <1024>;
> > + d-cache-size = <65536>;
> > + d-tlb-sets = <1>;
> > + d-tlb-size = <48>;
> > + device_type = "cpu";
> > + i-cache-block-size = <64>;
> > + i-cache-sets = <1024>;
> > + i-cache-size = <65536>;
> > + i-tlb-sets = <1>;
> > + i-tlb-size = <48>;
> > + mmu-type = "riscv,sv48";
> > + next-level-cache = <&l2c2>;
> > + reg = <0x3>;
> > + riscv,isa = "rv64imafdch";
> > + riscv,isa-base = "rv64i";
> > + riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "h", "zicntr",
> > + "zicsr", "zifencei", "zihintpause", "zihpm",
> > + "zba", "zbb", "zbs", "sscofpmf";
> > + tlb-split;
> > +
> > + cpu3_intc: interrupt-controller {
> > + compatible = "riscv,cpu-intc";
> > + interrupt-controller;
> > + #interrupt-cells = <1>;
> > + };
> > + };
> > +
> > + cpu4: cpu@4 {
> > + compatible = "starfive,dubhe-90", "riscv";
> > + capacity-dmips-mhz = <1024>;
> > + d-cache-block-size = <64>;
> > + d-cache-sets = <1024>;
> > + d-cache-size = <65536>;
> > + d-tlb-sets = <1>;
> > + d-tlb-size = <48>;
> > + device_type = "cpu";
> > + i-cache-block-size = <64>;
> > + i-cache-sets = <1024>;
> > + i-cache-size = <65536>;
> > + i-tlb-sets = <1>;
> > + i-tlb-size = <48>;
> > + mmu-type = "riscv,sv48";
> > + next-level-cache = <&l2c2>;
> > + reg = <0x4>;
> > + riscv,isa = "rv64imafdch";
> > + riscv,isa-base = "rv64i";
> > + riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "h", "zicntr",
> > + "zicsr", "zifencei", "zihintpause", "zihpm",
> > + "zba", "zbb", "zbs", "sscofpmf";
> > + tlb-split;
> > +
> > + cpu4_intc: interrupt-controller {
> > + compatible = "riscv,cpu-intc";
> > + interrupt-controller;
> > + #interrupt-cells = <1>;
> > + };
> > + };
> > +
> > + cpu5: cpu@5 {
> > + compatible = "starfive,dubhe-90", "riscv";
> > + capacity-dmips-mhz = <1024>;
> > + d-cache-block-size = <64>;
> > + d-cache-sets = <1024>;
> > + d-cache-size = <65536>;
> > + d-tlb-sets = <1>;
> > + d-tlb-size = <48>;
> > + device_type = "cpu";
> > + i-cache-block-size = <64>;
> > + i-cache-sets = <1024>;
> > + i-cache-size = <65536>;
> > + i-tlb-sets = <1>;
> > + i-tlb-size = <48>;
> > + mmu-type = "riscv,sv48";
> > + next-level-cache = <&l2c2>;
> > + reg = <0x5>;
> > + riscv,isa = "rv64imafdch";
> > + riscv,isa-base = "rv64i";
> > + riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "h", "zicntr",
> > + "zicsr", "zifencei", "zihintpause", "zihpm",
> > + "zba", "zbb", "zbs", "sscofpmf";
> > + tlb-split;
> > +
> > + cpu5_intc: interrupt-controller {
> > + compatible = "riscv,cpu-intc";
> > + interrupt-controller;
> > + #interrupt-cells = <1>;
> > + };
> > + };
> > +
> > + cpu-map {
> > + cluster0 {
> > + core0 {
> > + cpu = <&cpu0>;
> > + };
> > + };
> > +
> > + cluster1 {
> > + core0 {
> > + cpu = <&cpu1>;
> > + };
> > + };
> > +
> > + cluster2 {
> > + core0 {
> > + cpu = <&cpu2>;
> > + };
> > +
> > + core1 {
> > + cpu = <&cpu3>;
> > + };
> > +
> > + core2 {
> > + cpu = <&cpu4>;
> > + };
> > +
> > + core3 {
> > + cpu = <&cpu5>;
> > + };
> > + };
> > + };
> > +
> > + l2c0: cache-controller-0 {
> > + compatible = "cache";
> > + cache-block-size = <64>;
> > + cache-level = <2>;
> > + cache-sets = <512>;
> > + cache-size = <0x40000>;
> > + cache-unified;
> > + next-level-cache = <&l3_cache>;
> > + };
> > +
> > + l2c1: cache-controller-1 {
> > + compatible = "cache";
> > + cache-block-size = <64>;
> > + cache-level = <2>;
> > + cache-sets = <512>;
> > + cache-size = <0x40000>;
> > + cache-unified;
> > + next-level-cache = <&l3_cache>;
> > + };
> > +
> > + l2c2: cache-controller-2{
> > + compatible = "cache";
> > + cache-block-size = <64>;
> > + cache-level = <2>;
> > + cache-sets = <4096>;
> > + cache-size = <0x200000>;
> > + cache-unified;
> > + next-level-cache = <&l3_cache>;
> > + };
> > +
> > + l3_cache: cache-controller-3 {
> > + compatible = "cache";
> > + cache-block-size = <64>;
> > + cache-level = <3>;
> > + cache-sets = <8192>;
> > + cache-size = <0x400000>;
> > + cache-unified;
> > + };
> > + };
> > +
> > + clk_uart: clk-uart {
> > + compatible = "fixed-clock"; /* Initial clock handler for UART */
> > + #clock-cells = <0>;
> > + clock-frequency = <24000000>;
> > + };
> > +
> > + soc {
> > + compatible = "simple-bus";
> > + interrupt-parent = <&plic>;
> > + #address-cells = <2>;
> > + #size-cells = <2>;
> > + ranges;
> > +
> > + clint: clint@2000000 {
> > + compatible = "starfive,jh8100-clint", "sifive,clint0";
> > + reg = <0x0 0x2000000 0x0 0x10000>;
> > + 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>,
> > + <&cpu5_intc 3>, <&cpu5_intc 7>;
> > + };
> > +
> > + plic: interrupt-controller@c000000 {
> > + #interrupt-cells = <1>;
> > + #address-cells = <0>;
> > + compatible = "starfive,jh8100-plic", "sifive,plic-1.0.0";
> > + reg = <0x0 0x0c000000 0x0 0x4000000>;
> > + riscv,ndev = <200>;
> > + interrupt-controller;
> > + interrupts-extended = <&cpu0_intc 11>, <&cpu1_intc 11>,
> > + <&cpu0_intc 9>, <&cpu1_intc 9>,
> > + <&cpu2_intc 11>, <&cpu3_intc 11>,
> > + <&cpu4_intc 11>, <&cpu5_intc 11>,
> > + <&cpu2_intc 9>, <&cpu3_intc 9>,
> > + <&cpu4_intc 9>, <&cpu5_intc 9>;
> > + };
> > +
> > + uart0: serial@12160000 {
> > + compatible = "starfive,jh8100-uart", "cdns,uart-r1p8";
> > + reg = <0x0 0x12160000 0x0 0x10000>;
> > + clock-names = "uart_clk", "pclk";
> > + clocks = <&clk_uart>, <&clk_uart>;
> > + interrupts = <67>;
> > + status = "disabled";
> > + };
> > +
> > + uart1: serial@12170000 {
> > + compatible = "starfive,jh8100-uart", "cdns,uart-r1p8";
> > + reg = <0x0 0x12170000 0x0 0x10000>;
> > + clock-names = "uart_clk", "pclk";
> > + clocks = <&clk_uart>, <&clk_uart>;
> > + interrupts = <68>;
> > + status = "disabled";
> > + };
> > +
> > + uart2: serial@12180000 {
> > + compatible = "starfive,jh8100-uart", "cdns,uart-r1p8";
> > + reg = <0x0 0x12180000 0x0 0x10000>;
> > + clock-names = "uart_clk", "pclk";
> > + clocks = <&clk_uart>, <&clk_uart>;
> > + interrupts = <69>;
> > + status = "disabled";
> > + };
> > +
> > + uart3: serial@12190000 {
> > + compatible = "starfive,jh8100-uart", "cdns,uart-r1p8";
> > + reg = <0x0 0x12190000 0x0 0x10000>;
> > + clock-names = "uart_clk", "pclk";
> > + clocks = <&clk_uart>, <&clk_uart>;
> > + interrupts = <70>;
> > + status = "disabled";
> > + };
> > +
> > + uart4: serial@121a0000 {
> > + compatible = "starfive,jh8100-uart", "cdns,uart-r1p8";
> > + reg = <0x0 0x121a0000 0x0 0x10000>;
> > + clock-names = "uart_clk", "pclk";
> > + clocks = <&clk_uart>, <&clk_uart>;
> > + interrupts = <71>;
> > + status = "disabled";
> > + };
> > +
> > + uart5: serial@127d0000 {
> > + compatible = "starfive,jh8100-uart", "cdns,uart-r1p8";
> > + reg = <0x0 0x127d0000 0x0 0x10000>;
> > + clock-names = "uart_clk", "pclk";
> > + clocks = <&clk_uart>, <&clk_uart>;
> > + interrupts = <72>;
> > + status = "disabled";
> > + };
> > +
> > + uart6: serial@127e0000 {
> > + compatible = "starfive,jh8100-uart", "cdns,uart-r1p8";
> > + reg = <0x0 0x127e0000 0x0 0x10000>;
> > + clock-names = "uart_clk", "pclk";
> > + clocks = <&clk_uart>, <&clk_uart>;
> > + interrupts = <73>;
> > + status = "disabled";
> > + };
> > + };
> > +};
