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Message-ID: <CAOnJCUKq9xP+yYGU0OLYPqBGqph7oD4pihZzfOLyXFoBPs2uTQ@mail.gmail.com>
Date: Mon, 16 Nov 2020 22:07:51 -0800
From: Atish Patra <atishp@...shpatra.org>
To: Bin Meng <bmeng.cn@...il.com>
Cc: Atish Patra <atish.patra@....com>,
devicetree <devicetree@...r.kernel.org>,
Conor.Dooley@...rochip.com, Albert Ou <aou@...s.berkeley.edu>,
Cyril.Jean@...rochip.com,
Daire McNamara <daire.mcnamara@...rochip.com>,
Anup Patel <anup.patel@....com>,
linux-kernel <linux-kernel@...r.kernel.org>,
Ivan.Griffin@...rochip.com, Rob Herring <robh+dt@...nel.org>,
Alistair Francis <alistair.francis@....com>,
Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>,
linux-riscv <linux-riscv@...ts.infradead.org>
Subject: Re: [RFC PATCH v2 3/4] RISC-V: Initial DTS for Microchip ICICLE board
On Mon, Nov 16, 2020 at 6:15 PM Bin Meng <bmeng.cn@...il.com> wrote:
>
> On Sat, Nov 14, 2020 at 4:29 AM Atish Patra <atish.patra@....com> wrote:
> >
> > Add initial DTS for Microchip ICICLE board having only
> > essential devcies (clocks, sdhci, ethernet, serial, etc).
>
> typo: devices
>
Thanks. Will fix it.
> > The device tree is based on the U-Boot patch.
> >
> > https://patchwork.ozlabs.org/project/uboot/patch/20201110103414.10142-6-padmarao.begari@microchip.com/
> >
> > Signed-off-by: Atish Patra <atish.patra@....com>
> > ---
> > arch/riscv/boot/dts/Makefile | 1 +
> > arch/riscv/boot/dts/microchip/Makefile | 2 +
> > .../microchip/microchip-mpfs-icicle-kit.dts | 54 +++
> > .../boot/dts/microchip/microchip-mpfs.dtsi | 342 ++++++++++++++++++
> > 4 files changed, 399 insertions(+)
> > create mode 100644 arch/riscv/boot/dts/microchip/Makefile
> > create mode 100644 arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts
> > create mode 100644 arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi
> >
> > 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 /, $(subdir-y))
> > diff --git a/arch/riscv/boot/dts/microchip/Makefile b/arch/riscv/boot/dts/microchip/Makefile
> > new file mode 100644
> > index 000000000000..622b12771fd3
> > --- /dev/null
> > +++ b/arch/riscv/boot/dts/microchip/Makefile
> > @@ -0,0 +1,2 @@
> > +# SPDX-License-Identifier: GPL-2.0
> > +dtb-$(CONFIG_SOC_MICROCHIP_POLARFIRE) += microchip-mpfs-icicle-kit.dtb
> > diff --git a/arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts b/arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts
> > new file mode 100644
> > index 000000000000..9a382ab0a799
> > --- /dev/null
> > +++ b/arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts
> > @@ -0,0 +1,54 @@
> > +// SPDX-License-Identifier: GPL-2.0+
>
> Please make this dual-licensed, GPL or MIT.
> See https://github.com/polarfire-soc/meta-polarfire-soc-yocto-bsp/blob/master/recipes-kernel/linux/files/icicle-kit-es/icicle-kit-es-a000-microchip.dts
>
I had that originally. Checkpatch did not like that. I will revert it
and investigate the real cause for the checkpatch complaint.
> > +/* Copyright (c) 2020 Microchip Technology Inc */
> > +
> > +/dts-v1/;
> > +
> > +#include "microchip-mpfs.dtsi"
> > +
> > +/* Clock frequency (in Hz) of the rtcclk */
> > +#define RTCCLK_FREQ 1000000
> > +
> > +/ {
> > + #address-cells = <2>;
> > + #size-cells = <2>;
> > + model = "Microchip PolarFire-SoC Icicle Kit";
> > + compatible = "microchip,mpfs-icicle-kit", "microchip,polarfire-soc";
> > +
> > + chosen {
> > + stdout-path = &serial0;
> > + };
> > +
> > + cpus {
> > + timebase-frequency = <RTCCLK_FREQ>;
> > + };
> > +
> > + memory@...00000 {
> > + device_type = "memory";
> > + reg = <0x0 0x80000000 0x0 0x40000000>;
> > + clocks = <&clkcfg 26>;
> > + };
> > +
> > + soc {
> > + };
> > +};
> > +
> > +&serial0 {
> > + status = "okay";
> > +};
> > +
> > +&serial1 {
> > + status = "okay";
> > +};
> > +
> > +&serial2 {
> > + status = "okay";
> > +};
> > +
> > +&serial3 {
> > + status = "okay";
> > +};
> > +
> > +&sdcard {
> > + status = "okay";
> > +};
> > +
> > diff --git a/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi b/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi
> > new file mode 100644
> > index 000000000000..63ac60f345d8
> > --- /dev/null
> > +++ b/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi
> > @@ -0,0 +1,342 @@
> > +// SPDX-License-Identifier: GPL-2.0+
> > +/* Copyright (c) 2020 Microchip Technology Inc */
> > +
> > +/dts-v1/;
> > +
> > +/ {
> > + #address-cells = <2>;
> > + #size-cells = <2>;
> > + model = "Microchip PolarFire-SoC";
> > + compatible = "microchip,polarfire-soc";
> > +
> > + chosen {
> > + };
> > +
> > + cpus {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > +
> > + 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;
> > + };
> > + };
> > + };
> > +
> > + 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", /* 0-3 */
> > + "MAC0clk", "MAC1clk", "MMCclk", "TIMERclk", /* 4-7 */
> > + "MMUART0clk", "MMUART1clk", "MMUART2clk", "MMUART3clk", /* 8-11 */
> > + "MMUART4clk", "SPI0clk", "SPI1clk", "I2C0clk", /* 12-15 */
> > + "I2C1clk", "CAN0clk", "CAN1clk", "USBclk", /* 16-19 */
> > + "RESERVED", "RTCclk", "QSPIclk", "GPIO0clk", /* 20-23 */
> > + "GPIO1clk", "GPIO2clk", "DDRCclk", "FIC0clk", /* 24-27 */
> > + "FIC1clk", "FIC2clk", "FIC3clk", "ATHENAclk", "CFMclk"; /* 28-32 */
>
> Should all these names be lower case?
>
Probably yes. The DT binding document did not specify any case.
However, I just checked the linux kernel source. Most of the DT
actually use lowercase.
I will change it lower case in the next version.
> > + };
> > +
> > + 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 = "disabled";
> > + };
> > +
> > + 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 = "disabled";
> > + };
> > +
> > + 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 = "disabled";
> > + };
> > +
> > + 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 = "disabled";
> > + };
> > +
> > + emmc: mmc@...08000 {
> > + compatible = "cdns,sd4hc";
> > + reg = <0x0 0x20008000 0x0 0x1000>;
> > + interrupt-parent = <&plic>;
> > + interrupts = <88 89>;
> > + pinctrl-names = "default";
> > + clocks = <&clkcfg 6>;
> > + bus-width = <4>;
> > + cap-mmc-highspeed;
> > + mmc-ddr-3_3v;
> > + max-frequency = <200000000>;
> > + non-removable;
> > + no-sd;
> > + no-sdio;
> > + voltage-ranges = <3300 3300>;
> > + status = "disabled";
> > + };
> > +
> > + 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 = "disabled";
> > + };
> > +
> > + emac0: ethernet@...10000 {
> > + compatible = "cdns,macb";
> > + reg = <0x0 0x20110000 0x0 0x2000>;
> > + interrupt-parent = <&plic>;
> > + interrupts = <64 65 66 67>;
> > + local-mac-address = [00 00 00 00 00 00];
> > + phy-mode = "sgmii";
> > + clocks = <&clkcfg 5>, <&clkcfg 2>;
> > + clock-names = "pclk", "hclk";
> > + status = "disabled";
> > +
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + phy-handle = <&phy0>;
> > + phy0: ethernet-phy@8 {
> > + reg = <8>;
> > + ti,fifo-depth = <0x01>;
> > + };
> > + };
> > +
> > + emac1: ethernet@...12000 {
> > + compatible = "cdns,macb";
> > + reg = <0x0 0x20112000 0x0 0x2000>;
> > + interrupt-parent = <&plic>;
> > + interrupts = <70 71 72 73>;
> > + mac-address = [00 00 00 00 00 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>;
> > + };
> > + };
> > +
> > + };
> > +};
>
> Regards,
> Bin
>
> _______________________________________________
> linux-riscv mailing list
> linux-riscv@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-riscv
--
Regards,
Atish
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