在 2022-10-25星期二的 15:59 +0100，Andre Przywara写道：
> The Lctech Pi F1C200s (also previously known under the Cherry Pi
> brand)
Oh? Are they the same hardware?
> is a small development board with the Allwinner F1C200s SoC. This is
> the
> same as the F1C100s, but with 64MB instead of 32MB co-packaged DRAM.
>
> Alongside the obligatory micro-SD card slot, the board features a
> SPI-NAND flash chip, LCD and touch connectors, and unpopulated
> expansion header pins.
> There are two USB Type-C ports on the board: One supplies the power,
> also
> connects to the USB MUSB OTG controller port. The other one is
> connected
> to an CH340 USB serial chip, which in turn is connected to UART1.
>
> Add a devicetree file, so that the board can be used easily.
>
> Signed-off-by: Andre Przywara <andre.przywara@xxxxxxx>
> ---
> arch/arm/boot/dts/Makefile | 1 +
> arch/arm/boot/dts/suniv-f1c100s.dtsi | 5 ++
> arch/arm/boot/dts/suniv-f1c200s-lctech-pi.dts | 80
> +++++++++++++++++++
> 3 files changed, 86 insertions(+)
> create mode 100644 arch/arm/boot/dts/suniv-f1c200s-lctech-pi.dts
>
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 6abf6434eb372..f99c5c20bf7ef 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -1394,6 +1394,7 @@ dtb-$(CONFIG_MACH_SUN9I) += \
> sun9i-a80-cubieboard4.dtb
> dtb-$(CONFIG_MACH_SUNIV) += \
> suniv-f1c100s-licheepi-nano.dtb \
> + suniv-f1c200s-lctech-pi.dtb \
> suniv-f1c200s-popstick-v1.1.dtb
> dtb-$(CONFIG_ARCH_TEGRA_2x_SOC) += \
> tegra20-acer-a500-picasso.dtb \
> diff --git a/arch/arm/boot/dts/suniv-f1c100s.dtsi
> b/arch/arm/boot/dts/suniv-f1c100s.dtsi
> index 0f24c766c9fc5..2ec022e92eea8 100644
> --- a/arch/arm/boot/dts/suniv-f1c100s.dtsi
> +++ b/arch/arm/boot/dts/suniv-f1c100s.dtsi
> @@ -201,6 +201,11 @@ uart0_pe_pins: uart0-pe-pins {
> pins = "PE0", "PE1";
> function = "uart0";
> };
> +
> + uart1_pa_pins: uart1-pa-pins {
> + pins = "PA2", "PA3";
> + function = "uart1";
> + };
Should this be in a splitted commit?
> };
>
> timer@1c20c00 {
> diff --git a/arch/arm/boot/dts/suniv-f1c200s-lctech-pi.dts
> b/arch/arm/boot/dts/suniv-f1c200s-lctech-pi.dts
> new file mode 100644
> index 0000000000000..a9d1778395438
> --- /dev/null
> +++ b/arch/arm/boot/dts/suniv-f1c200s-lctech-pi.dts
> @@ -0,0 +1,80 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * Copyright 2022 Arm Ltd,
> + * based on work:
> + * Copyright 2022 Icenowy Zheng <uwu@xxxxxxxxxx>
> + */
> +
> +/dts-v1/;
> +#include "suniv-f1c100s.dtsi"
> +
> +#include <dt-bindings/gpio/gpio.h>
> +
> +/ {
> + model = "Lctech Pi F1C200s";
> + compatible = "lctech,pi-f1c200s", "allwinner,suniv-f1c200s",
> + "allwinner,suniv-f1c100s";
> +
> + aliases {
> + mmc0 = &mmc0;
> + serial0 = &uart1;
> + spi0 = &spi0;
> + };
> +
> + chosen {
> + stdout-path = "serial0:115200n8";
> + };
> +
> + reg_vcc3v3: regulator-3v3 {
> + compatible = "regulator-fixed";
> + regulator-name = "vcc3v3";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + };
> +};
> +
> +&mmc0 {
> + broken-cd;
> + bus-width = <4>;
> + disable-wp;
> + vmmc-supply = <®_vcc3v3>;
> + status = "okay";
> +};
> +
> +&otg_sram {
> + status = "okay";
> +};
> +
> +&spi0 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&spi0_pc_pins>;
> + status = "okay";
> +
> + flash@0 {
> + compatible = "spi-nand";
> + reg = <0>;
> + #address-cells = <1>;
> + #size-cells = <1>;
> + spi-max-frequency = <40000000>;
> + };
> +};
> +
> +&uart1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&uart1_pa_pins>;
> + status = "okay";
> +};
> +
> +/*
> + * This is a Type-C socket, but CC1/2 are not connected, and VBUS is
> connected
> + * to Vin, which supplies the board. Host mode works (if the board
> is powered
> + * otherwise), but peripheral is probably the intention.
> + */
> +&usb_otg {
> + dr_mode = "peripheral";
> + status = "okay";
> +};
Finally we should get able to override dr_mode just by HW.
> +
> +&usbphy {
> + status = "okay";
> +};
