[v2,0/3] RK356x/Quartz64 Model A SPI

Changes in v2:
 - sort properties in rk356x.dtsi correctly
 - remove pinctrl-1 line from rk356x.dtsi as it refers to
   non-mainline stuff

Original cover letter:

The first patch of this series adds a compatible for rk3568-spi
to the DT bindings.

The second adds the SPI nodes for RK3566 and RK3568 SoCs. The nodes
were lifted from the downstream vendor kernel's devicetree, and were
double-checked for correctness.

The third patch sets up the broken-out SPI pins on the Quartz64
Model A; they use the "m1" set of the pins, not the "m0" set. I
assume the "m" stands for "mux".

I've tested both patches by connecting an MCP2515 SPI CAN bus
controller to the spi pins, which initialised fine.

Regards,
Nicolas Frattaroli

Nicolas Frattaroli (3):
  dt-bindings: spi: spi-rockchip: Add rk3568-spi compatible
  arm64: dts: rockchip: Add spi nodes on rk356x
  arm64: dts: rockchip: Add spi1 pins on Quartz64 A

 .../devicetree/bindings/spi/spi-rockchip.yaml |  1 +
 .../boot/dts/rockchip/rk3566-quartz64-a.dts   |  5 ++
 arch/arm64/boot/dts/rockchip/rk356x.dtsi      | 64 +++++++++++++++++++
 3 files changed, 70 insertions(+)

On 11/27/21 3:19 PM, Nicolas Frattaroli wrote:
> The Quartz64 Model A has the SPI pins broken out on its pin
> header. The actual pins being used though are not the m0
> variant, but the m1 variant, which also lacks the cs1 pin.
> 
> This commit overrides pinctrl-0 accordingly for this board.
> 
> spi1 is intentionally left disabled, as anyone wishing to add
> SPI devices needs to edit the dts anyway, and the pins are more
> useful as GPIOs for the rest of the users.
> 
> Signed-off-by: Nicolas Frattaroli <frattaroli.nicolas@gmail.com>
> ---
>  arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts b/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts
> index 4d4b2a301b1a..166399b7f13f 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts
> +++ b/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts
> @@ -509,6 +509,11 @@ &spdif {
>  	status = "okay";
>  };
>  
> +&spi1 {

> +	pinctrl-names = "default";

With the removal off pinctrl-1 the pinctrl-names property is already
correctly defined.

+	spi1: spi@fe620000 {
+		compatible = "rockchip,rk3568-spi", "rockchip,rk3066-spi";
+		reg = <0x0 0xfe620000 0x0 0x1000>;
+		interrupts = <GIC_SPI 104 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&cru CLK_SPI1>, <&cru PCLK_SPI1>;
+		clock-names = "spiclk", "apb_pclk";
+		dmas = <&dmac0 22>, <&dmac0 23>;
+		dma-names = "tx", "rx";
+		pinctrl-names = "default";
+		pinctrl-0 = <&spi1m0_cs0 &spi1m0_cs1 &spi1m0_pins>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		status = "disabled";
+	};

> +	pinctrl-0 = <&spi1m1_cs0 &spi1m1_pins>;
> +};
> +
>  &tsadc {
>  	/* tshut mode 0:CRU 1:GPIO */
>  	rockchip,hw-tshut-mode = <1>;
>

On Samstag, 27. November 2021 16:29:33 CET Johan Jonker wrote:
> 
> On 11/27/21 3:19 PM, Nicolas Frattaroli wrote:
> > The Quartz64 Model A has the SPI pins broken out on its pin
> > header. The actual pins being used though are not the m0
> > variant, but the m1 variant, which also lacks the cs1 pin.
> > 
> > This commit overrides pinctrl-0 accordingly for this board.
> > 
> > spi1 is intentionally left disabled, as anyone wishing to add
> > SPI devices needs to edit the dts anyway, and the pins are more
> > useful as GPIOs for the rest of the users.
> > 
> > Signed-off-by: Nicolas Frattaroli <frattaroli.nicolas@gmail.com>
> > ---
> >  arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts | 5 +++++
> >  1 file changed, 5 insertions(+)
> > 
> > diff --git a/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts b/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts
> > index 4d4b2a301b1a..166399b7f13f 100644
> > --- a/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts
> > +++ b/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts
> > @@ -509,6 +509,11 @@ &spdif {
> >  	status = "okay";
> >  };
> >  
> > +&spi1 {
> 
> > +	pinctrl-names = "default";
> 
> With the removal off pinctrl-1 the pinctrl-names property is already
> correctly defined.
> 

If it ever gets re-added in the future, it no longer is, so it's better
to be explicit right now than to risk one board breaking in the future
when the SoC's definition changes.

Regards,
Nicolas Frattaroli

On Sat, 27 Nov 2021 15:19:06 +0100, Nicolas Frattaroli wrote:
> Changes in v2:
>  - sort properties in rk356x.dtsi correctly
>  - remove pinctrl-1 line from rk356x.dtsi as it refers to
>    non-mainline stuff
> 
> Original cover letter:
> 
> [...]

Applied, thanks!

[2/3] arm64: dts: rockchip: Add spi nodes on rk356x
      commit: aaa552d84580e9213d0e2bf0f9243477d1227bdd
[3/3] arm64: dts: rockchip: Add spi1 pins on Quartz64 A
      commit: ea1847c09c34234c2980b99b6bb732a55447c33f

Best regards,