On Wed, Jul 12, 2017 at 12:34:21PM +0200, Geert Uytterhoeven wrote:
> Add the device nodes for all MSIOF SPI controllers, incl. clocks, power
> domain, dma, and reset properties.
>
> Due to a hardware erratum on R-Car H3 ES1.x, using MSIOF for SPI is only
> supported on ES2.0 and later.
>
> Signed-off-by: Geert Uytterhoeven <geert+rene...@glider.be>
> ---
> Tested on r8a7795/salvator-xs with MSIOF3(A) connected to a HD44780
> character LCD through a pair of 74HCT595 shift registers.
Thanks, applied for v4.14.
>
> v3:
> - Add resets properties,
> - Add family-specific compatible values,
> - Add link to second DMA controller for MSIOF[01],
>
> v2:
> - Rebased,
> - Switch to final CPG/MSSR bindings,
> - Change one-line summary prefix to match current arm-soc practices.
> ---
> arch/arm64/boot/dts/renesas/r8a7795.dtsi | 62
> ++++++++++++++++++++++++++++++++
> 1 file changed, 62 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/renesas/r8a7795.dtsi
> b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
> index 6f5130766a212d6d..507d8ad07aaf9007 100644
> --- a/arch/arm64/boot/dts/renesas/r8a7795.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
> @@ -899,6 +899,68 @@
> status = "disabled";
> };
>
> + msiof0: spi@e6e90000 {
> + compatible = "renesas,msiof-r8a7795",
I take it there is also a patch to add the above compat string
to the bindings documentation.
> + "renesas,rcar-gen3-msiof";
> + reg = <0 0xe6e90000 0 0x0064>;
> + interrupts = <GIC_SPI 156 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&cpg CPG_MOD 211>;
> + dmas = <&dmac1 0x41>, <&dmac1 0x40>,
> + <&dmac2 0x41>, <&dmac2 0x40>;
> + dma-names = "tx", "rx", "tx", "rx";
> + power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
> + resets = <&cpg 211>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> + status = "disabled";
> + };
...
