Re: [PATCH v2 7/8] riscv: dts: starfive: Add StarFive JH7110 VisionFive2 board device tree

Emil Renner Berthing
2022-11-18T17:56:16Z

On Fri, 18 Nov 2022 at 02:17, Hal Feng <hal.feng@starfivetech.com> wrote:
>
> From: Emil Renner Berthing <kernel@esmil.dk>
>
> Add a minimal device tree for StarFive JH7110 VisionFive2 board.
Missing space between VisionFive and 2.

> Support booting and basic clock/reset/pinctrl/uart drivers.
>
> Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
> Co-developed-by: Jianlong Huang <jianlong.huang@starfivetech.com>
> Signed-off-by: Jianlong Huang <jianlong.huang@starfivetech.com>
> Co-developed-by: Hal Feng <hal.feng@starfivetech.com>
> Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
> ---
> arch/riscv/boot/dts/starfive/Makefile | 1 +
> .../jh7110-starfive-visionfive-v2.dts | 116 ++++++++++++++++++
> 2 files changed, 117 insertions(+)
> create mode 100644 arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-v2.dts
>
> diff --git a/arch/riscv/boot/dts/starfive/Makefile b/arch/riscv/boot/dts/starfive/Makefile
> index 0ea1bc15ab30..e1237dbc6aac 100644
> --- a/arch/riscv/boot/dts/starfive/Makefile
> +++ b/arch/riscv/boot/dts/starfive/Makefile
> @@ -1,2 +1,3 @@
> # SPDX-License-Identifier: GPL-2.0
> dtb-$(CONFIG_SOC_STARFIVE) += jh7100-beaglev-starlight.dtb
> +dtb-$(CONFIG_SOC_STARFIVE) += jh7110-starfive-visionfive-v2.dtb
> diff --git a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-v2.dts b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-v2.dts
> new file mode 100644
> index 000000000000..c8946cf3a268
> --- /dev/null
> +++ b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-v2.dts
> @@ -0,0 +1,116 @@
> +// SPDX-License-Identifier: GPL-2.0 OR MIT
> +/*
> + * Copyright (C) 2022 StarFive Technology Co., Ltd.
> + * Copyright (C) 2022 Emil Renner Berthing <kernel@esmil.dk>
> + */
> +
> +/dts-v1/;
> +#include "jh7110.dtsi"
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/pinctrl/pinctrl-starfive-jh7110.h>
> +
> +/ {
> + model = "StarFive VisionFive V2";
> + compatible = "starfive,visionfive-v2", "starfive,jh7110";

Again, please consult your colleagues if you're calling the board
"VisionFive 2" or "VisionFive V2" and name the file, model and board
accordingly.

> + aliases {
> + serial0 = &uart0;
> + };
> +
> + chosen {
> + linux,initrd-start = <0x46100000>;
> + linux,initrd-end = <0x4c000000>;

These two lines don't belong here. They're added by the bootloader dynamically.

> + stdout-path = "serial0:115200";

You're missing a n8.

> + };
> +
> + cpus {
> + timebase-frequency = <4000000>;
> + };
> +
> + memory@40000000 {
> + device_type = "memory";
> + reg = <0x0 0x40000000 0x1 0x0>;
> + };
> +
> + gpio-restart {
> + compatible = "gpio-restart";
> + gpios = <&gpio 35 GPIO_ACTIVE_HIGH>;
> + priority = <224>;
> + };
> +};
> +
> +&osc {
> + clock-frequency = <24000000>;
> +};
> +
> +&clk_rtc {
> + clock-frequency = <32768>;
> +};
> +
> +&gmac0_rmii_refin {
> + clock-frequency = <50000000>;
> +};
> +
> +&gmac0_rgmii_rxin {
> + clock-frequency = <125000000>;
> +};
> +
> +&gmac1_rmii_refin {
> + clock-frequency = <50000000>;
> +};
> +
> +&gmac1_rgmii_rxin {
> + clock-frequency = <125000000>;
> +};
> +
> +&i2stx_bclk_ext {
> + clock-frequency = <12288000>;
> +};
> +
> +&i2stx_lrck_ext {
> + clock-frequency = <192000>;
> +};
> +
> +&i2srx_bclk_ext {
> + clock-frequency = <12288000>;
> +};
> +
> +&i2srx_lrck_ext {
> + clock-frequency = <192000>;
> +};
> +
> +&tdm_ext {
> + clock-frequency = <49152000>;
> +};
> +
> +&mclk_ext {
> + clock-frequency = <12288000>;
> +};
> +
> +&gpio {
> + uart0_pins: uart0-0 {
> + tx-pins {
> + pinmux = <GPIOMUX(5, GPOUT_SYS_UART0_TX, GPOEN_ENABLE, GPI_NONE)>;
> + bias-disable;
> + drive-strength = <12>;
> + input-disable;
> + input-schmitt-disable;
> + slew-rate = <0>;
> + };
> +
> + rx-pins {
> + pinmux = <GPIOMUX(6, GPOUT_LOW, GPOEN_DISABLE, GPI_SYS_UART0_RX)>;
> + bias-pull-up;

There are external pull-ups, so maybe change this line to

bias-disable; /* external pull-up */

> + drive-strength = <2>;
> + input-enable;
> + input-schmitt-enable;
> + slew-rate = <0>;
> + };
> + };
> +};
> +
> +&uart0 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&uart0_pins>;
> + status = "okay";
> +};
> --
> 2.38.1
>