[PATCH v2 09/10] riscv: Add device tree bindings for SPI

[Rick Chen]

> This patch adds bindings for the MMC slot and SPI flash on the Sipeed Maix
> Bit.
>
> Signed-off-by: Sean Anderson <seanga2 at gmail.com>
> ---
> This patch was previously part of
> https://patchwork.ozlabs.org/project/uboot/list/?series=161576
>
> Changes in v2:
> - Remove broken-wp property (implicit due to no wp gpio)
> - Remove ctrl0 field offsets from device tree
> - Switch to new compatible strings
> - Switch to new pinmux binding style
>
>  arch/riscv/dts/k210-maix-bit.dts | 46 +++++++++++++++++++++++++++++++-
>  arch/riscv/dts/k210.dtsi         |  2 ++
>  2 files changed, 47 insertions(+), 1 deletion(-)

Acked-by: Rick Chen <rick at andestech.com>

I am OK that this patch can be pulled via SPI tree.

Thanks,
Rick

>
> diff --git a/arch/riscv/dts/k210-maix-bit.dts b/arch/riscv/dts/k210-maix-bit.dts
> index e840e04ada..73892c6450 100644
> --- a/arch/riscv/dts/k210-maix-bit.dts
> +++ b/arch/riscv/dts/k210-maix-bit.dts
> @@ -141,7 +141,7 @@
>                 pinmux = <K210_FPIOA(26, K210_PCF_SPI1_D1)>,
>                          <K210_FPIOA(27, K210_PCF_SPI1_SCLK)>,
>                          <K210_FPIOA(28, K210_PCF_SPI1_D0)>,
> -                        <K210_FPIOA(29, K210_PCF_GPIOHS13)>;
> +                        <K210_FPIOA(29, K210_PCF_GPIOHS13)>; /* cs */
>         };
>  };
>
> @@ -149,3 +149,47 @@
>         pinctrl-0 = <&fpioa_dvp>;
>         pinctrl-names = "default";
>  };
> +
> +&spi0 {
> +       pinctrl-0 = <&fpioa_spi0>;
> +       pinctrl-names = "default";
> +       num-cs = <1>;
> +       cs-gpios = <&gpio0 20 0>;
> +
> +       panel at 0 {
> +               compatible = "sitronix,st7789v";
> +               reg = <0>;
> +               reset-gpios = <&gpio0 21 GPIO_ACTIVE_LOW>;
> +               dc-gpios = <&gpio0 22 0>;
> +               spi-max-frequency = <15000000>;
> +               status = "disabled";
> +       };
> +};
> +
> +&spi1 {
> +       pinctrl-0 = <&fpioa_spi1>;
> +       pinctrl-names = "default";
> +       num-cs = <1>;
> +       cs-gpios = <&gpio0 13 0>;
> +       status = "okay";
> +
> +       slot at 0 {
> +               compatible = "mmc-spi-slot";
> +               reg = <0>;
> +               spi-max-frequency = <25000000>;
> +               voltage-ranges = <3300 3300>;
> +               broken-cd;
> +       };
> +};
> +
> +&spi3 {
> +       status = "okay";
> +
> +       spi-flash at 0 {
> +               compatible = "jedec,spi-nor";
> +               reg = <0>;
> +               spi-max-frequency = <50000000>;
> +               m25p,fast-read;
> +               broken-flash-reset;
> +       };
> +};
> diff --git a/arch/riscv/dts/k210.dtsi b/arch/riscv/dts/k210.dtsi
> index 429891d651..fe47ee7aaf 100644
> --- a/arch/riscv/dts/k210.dtsi
> +++ b/arch/riscv/dts/k210.dtsi
> @@ -495,6 +495,8 @@
>                                 interrupts = <24>;
>                                 clocks = <&sysclk K210_CLK_DVP>;
>                                 resets = <&sysrst K210_RST_DVP>;
> +                               kendryte,sysctl = <&sysctl>;
> +                               kendryte,misc-offset = <K210_SYSCTL_MISC>;
>                                 status = "disabled";
>                         };
>
> --
> 2.28.0
>