Hi Milo,
On Wed, Oct 19, 2016 at 10:46:08PM +0900, Milo Kim wrote:
> H3 supports two SPI controllers. Four pins (MOSI, MISO, SCLK, SS) are
> configured through the pinctrl subsystem. It is almost same as A31 SPI
> except buffer size, so those DT properties are reusable.
>
> Cc: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx>
> Cc: Chen-Yu Tsai <wens@xxxxxxxx>
> Signed-off-by: Milo Kim <woogyom.kim@xxxxxxxxx>
Ideally, this would be part of your serie to add the H3 support to the
spi driver. This way, you make it explicit that there is a dependency
between the two, and it's easier for us :)
> ---
> arch/arm/boot/dts/sun8i-h3.dtsi | 46 +++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 46 insertions(+)
>
> diff --git a/arch/arm/boot/dts/sun8i-h3.dtsi b/arch/arm/boot/dts/sun8i-h3.dtsi
> index 75a8654..c38b028 100644
> --- a/arch/arm/boot/dts/sun8i-h3.dtsi
> +++ b/arch/arm/boot/dts/sun8i-h3.dtsi
> @@ -381,6 +381,20 @@
> allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
> };
>
> + spi0_pins: spi0 {
> + allwinner,pins = "PC0", "PC1", "PC2", "PC3";
> + allwinner,function = "spi0";
> + allwinner,drive = <SUN4I_PINCTRL_10_MA>;
> + allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
> + };
> +
> + spi1_pins: spi1 {
> + allwinner,pins = "PA15", "PA16", "PA14", "PA13";
> + allwinner,function = "spi1";
> + allwinner,drive = <SUN4I_PINCTRL_10_MA>;
> + allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
> + };
> +
This needs to be in a separate patch
> uart0_pins_a: uart0@0 {
> allwinner,pins = "PA4", "PA5";
> allwinner,function = "uart0";
> @@ -425,6 +439,38 @@
> clocks = <&osc24M>;
> };
>
> + spi0: spi@01c68000 {
> + compatible = "allwinner,sun8i-h3-spi";
> + reg = <0x01c68000 0x1000>;
> + interrupts = <GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&ccu CLK_BUS_SPI0>, <&ccu CLK_SPI0>;
> + clock-names = "ahb", "mod";
> + dmas = <&dma 23>, <&dma 23>;
> + dma-names = "rx", "tx";
> + pinctrl-names = "default";
> + pinctrl-0 = <&spi0_pins>;
> + resets = <&ccu RST_BUS_SPI0>;
> + status = "disabled";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + };
> +
> + spi1: spi@01c69000 {
> + compatible = "allwinner,sun8i-h3-spi";
> + reg = <0x01c69000 0x1000>;
> + interrupts = <GIC_SPI 66 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&ccu CLK_BUS_SPI1>, <&ccu CLK_SPI1>;
> + clock-names = "ahb", "mod";
> + dmas = <&dma 24>, <&dma 24>;
> + dma-names = "rx", "tx";
> + pinctrl-names = "default";
> + pinctrl-0 = <&spi1_pins>;
> + resets = <&ccu RST_BUS_SPI1>;
> + status = "disabled";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + };
> +
Thanks!
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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