2014-10-10 11:42:57

by Julien CHAUVEAU

Subject: [PATCH] ARM: dts: rockchip: enable DMA on SPI for rk3066 and rk3188

According to the RK3066 and RK3188 TRM, the two SPI controllers support DMA
handshake interface. Add the DMA properties so they can be used when needed.

Signed-off-by: Julien CHAUVEAU <[email protected]>
---
arch/arm/boot/dts/rk3xxx.dtsi | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/arch/arm/boot/dts/rk3xxx.dtsi b/arch/arm/boot/dts/rk3xxx.dtsi
index 499468d..9ba92de 100644
--- a/arch/arm/boot/dts/rk3xxx.dtsi
+++ b/arch/arm/boot/dts/rk3xxx.dtsi
@@ -367,6 +367,8 @@
reg = <0x20070000 0x1000>;
#address-cells = <1>;
#size-cells = <0>;
+ dmas = <&dmac2 10>, <&dmac2 11>;
+ dma-names = "tx", "rx";
status = "disabled";
};

@@ -378,6 +380,8 @@
reg = <0x20074000 0x1000>;
#address-cells = <1>;
#size-cells = <0>;
+ dmas = <&dmac2 12>, <&dmac2 13>;
+ dma-names = "tx", "rx";
status = "disabled";
};
};
--
1.9.1

2014-10-11 18:24:45

by Heiko Stübner

Subject: Re: [PATCH] ARM: dts: rockchip: enable DMA on SPI for rk3066 and rk3188

Hi Julien,

Am Freitag, 10. Oktober 2014, 10:04:13 schrieb Julien CHAUVEAU:
> According to the RK3066 and RK3188 TRM, the two SPI controllers support DMA
> handshake interface. Add the DMA properties so they can be used when needed.
>
> Signed-off-by: Julien CHAUVEAU <[email protected]>

added the patch to a temporary branch for 3.19
(on github and will move to kernel.org once 3.18-rc1 is released)


Heiko

> ---
> arch/arm/boot/dts/rk3xxx.dtsi | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/arch/arm/boot/dts/rk3xxx.dtsi b/arch/arm/boot/dts/rk3xxx.dtsi
> index 499468d..9ba92de 100644
> --- a/arch/arm/boot/dts/rk3xxx.dtsi
> +++ b/arch/arm/boot/dts/rk3xxx.dtsi
> @@ -367,6 +367,8 @@
> reg = <0x20070000 0x1000>;
> #address-cells = <1>;
> #size-cells = <0>;
> + dmas = <&dmac2 10>, <&dmac2 11>;
> + dma-names = "tx", "rx";
> status = "disabled";
> };
>
> @@ -378,6 +380,8 @@
> reg = <0x20074000 0x1000>;
> #address-cells = <1>;
> #size-cells = <0>;
> + dmas = <&dmac2 12>, <&dmac2 13>;
> + dma-names = "tx", "rx";
> status = "disabled";
> };
> };