On Wed, May 4, 2016 at 2:35 PM, Niklas Söderlund
<niklas.soderlund+renesas@xxxxxxxxxxxx> wrote:
> Add DMA properties to the I2C nodes.
>
> Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
> ---
> arch/arm64/boot/dts/renesas/r8a7795.dtsi | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/renesas/r8a7795.dtsi b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
> index a7315eb..49896e4 100644
> --- a/arch/arm64/boot/dts/renesas/r8a7795.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
> @@ -693,6 +693,8 @@
> interrupts = <GIC_SPI 287 IRQ_TYPE_LEVEL_HIGH>;
> clocks = <&cpg CPG_MOD 931>;
> power-domains = <&cpg>;
> + dmas = <&dmac1 0x91>, <&dmac1 0x90>;
> + dma-names = "tx", "rx";
> i2c-scl-internal-delay-ns = <110>;
> status = "disabled";
> };
> @@ -705,6 +707,8 @@
> interrupts = <GIC_SPI 288 IRQ_TYPE_LEVEL_HIGH>;
> clocks = <&cpg CPG_MOD 930>;
> power-domains = <&cpg>;
> + dmas = <&dmac1 0x93>, <&dmac1 0x92>;
> + dma-names = "tx", "rx";
> i2c-scl-internal-delay-ns = <6>;
> status = "disabled";
> };
> @@ -717,6 +721,8 @@
> interrupts = <GIC_SPI 286 IRQ_TYPE_LEVEL_HIGH>;
> clocks = <&cpg CPG_MOD 929>;
> power-domains = <&cpg>;
> + dmas = <&dmac1 0x95>, <&dmac1 0x94>;
> + dma-names = "tx", "rx";
> i2c-scl-internal-delay-ns = <6>;
> status = "disabled";
> };
The three above can be used with SYS-DMAC1 (channels 16-31) or with SYS-DMAC2
(channels 32-47).
It should be tested with the latter before adding the corresponding dmas, as
we had issue with SYS-DMAC2 before (they may have been fixed in firmware in the
mean time).
> @@ -729,6 +735,8 @@
> interrupts = <GIC_SPI 290 IRQ_TYPE_LEVEL_HIGH>;
> clocks = <&cpg CPG_MOD 928>;
> power-domains = <&cpg>;
> + dmas = <&dmac1 0x97>, <&dmac1 0x96>;
The two phandles above should reference "dmac0", as this i2c module can only be
used with SYS-DMAC0 (channels 0-15), according to the datasheet.
> + dma-names = "tx", "rx";
> i2c-scl-internal-delay-ns = <110>;
> status = "disabled";
> };
> @@ -741,6 +749,8 @@
> interrupts = <GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH>;
> clocks = <&cpg CPG_MOD 927>;
> power-domains = <&cpg>;
> + dmas = <&dmac1 0x99>, <&dmac1 0x98>;
dmac0
> + dma-names = "tx", "rx";
> i2c-scl-internal-delay-ns = <110>;
> status = "disabled";
> };
> @@ -753,6 +763,8 @@
> interrupts = <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH>;
> clocks = <&cpg CPG_MOD 919>;
> power-domains = <&cpg>;
> + dmas = <&dmac1 0x9b>, <&dmac1 0x9a>;
dmac0
> + dma-names = "tx", "rx";
> i2c-scl-internal-delay-ns = <110>;
> status = "disabled";
> };
> @@ -765,6 +777,8 @@
> interrupts = <GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>;
> clocks = <&cpg CPG_MOD 918>;
> power-domains = <&cpg>;
> + dmas = <&dmac1 0x9d>, <&dmac1 0x9c>;
dmac0
> + dma-names = "tx", "rx";
> i2c-scl-internal-delay-ns = <6>;
> status = "disabled";
> };
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
