On Thu, Jan 27, 2022 at 3:03 PM Vinod Koul <vkoul@xxxxxxxxxx> wrote:
>
> On 17-01-22, 09:35, Zong Li wrote:
> > Add dma-channels property, then we can determine how many channels there
> > by device tree.
> >
> > Signed-off-by: Zong Li <zong.li@xxxxxxxxxx>
> > ---
> > arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi | 1 +
> > arch/riscv/boot/dts/sifive/fu540-c000.dtsi | 1 +
> > 2 files changed, 2 insertions(+)
> >
> > diff --git a/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi b/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi
> > index c9f6d205d2ba..3c48f2d7a4a4 100644
> > --- a/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi
> > +++ b/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi
> > @@ -188,6 +188,7 @@ dma@3000000 {
>
> Unrelated but the node name should be dma-controller@...
>
Thanks for the correction, I guess we could give another patch for
changing the node name.
> > reg = <0x0 0x3000000 0x0 0x8000>;
> > interrupt-parent = <&plic>;
> > interrupts = <23 24 25 26 27 28 29 30>;
> > + dma-channels = <4>;
> > #dma-cells = <1>;
> > };
> >
> > diff --git a/arch/riscv/boot/dts/sifive/fu540-c000.dtsi b/arch/riscv/boot/dts/sifive/fu540-c000.dtsi
> > index 0655b5c4201d..2bdfe7f06e4b 100644
> > --- a/arch/riscv/boot/dts/sifive/fu540-c000.dtsi
> > +++ b/arch/riscv/boot/dts/sifive/fu540-c000.dtsi
> > @@ -171,6 +171,7 @@ dma: dma@3000000 {
> > reg = <0x0 0x3000000 0x0 0x8000>;
> > interrupt-parent = <&plic0>;
> > interrupts = <23 24 25 26 27 28 29 30>;
> > + dma-channels = <4>;
> > #dma-cells = <1>;
> > };
> > uart1: serial@10011000 {
> > --
> > 2.31.1
>
> --
> ~Vinod
