On 09/12/2020 12:47, Fabien Parent wrote:
> Add support the APDMA IP on MT8516. APDMA is a DMA controller
> for UARTs.
>
> Signed-off-by: Fabien Parent <fpar...@baylibre.com>
> ---
>
Applied to v5.11-next/dts64
Thanks a lot!
> V3: remove unicode symbol that slips into patch summary
> V2: Add missing dma-names properties on uart nodes
>
> arch/arm64/boot/dts/mediatek/mt8516.dtsi | 30 ++++++++++++++++++++++++
> 1 file changed, 30 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/mediatek/mt8516.dtsi
> b/arch/arm64/boot/dts/mediatek/mt8516.dtsi
> index e6e4d9d60094..b80e95574bef 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8516.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8516.dtsi
> @@ -276,6 +276,27 @@ gic: interrupt-controller@10310000 {
> (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
> };
>
> + apdma: dma-controller@11000480 {
> + compatible = "mediatek,mt8516-uart-dma",
> + "mediatek,mt6577-uart-dma";
> + reg = <0 0x11000480 0 0x80>,
> + <0 0x11000500 0 0x80>,
> + <0 0x11000580 0 0x80>,
> + <0 0x11000600 0 0x80>,
> + <0 0x11000980 0 0x80>,
> + <0 0x11000a00 0 0x80>;
> + interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_LOW>,
> + <GIC_SPI 97 IRQ_TYPE_LEVEL_LOW>,
> + <GIC_SPI 98 IRQ_TYPE_LEVEL_LOW>,
> + <GIC_SPI 99 IRQ_TYPE_LEVEL_LOW>,
> + <GIC_SPI 100 IRQ_TYPE_LEVEL_LOW>,
> + <GIC_SPI 101 IRQ_TYPE_LEVEL_LOW>;
> + dma-requests = <6>;
> + clocks = <&topckgen CLK_TOP_APDMA>;
> + clock-names = "apdma";
> + #dma-cells = <1>;
> + };
> +
> uart0: serial@11005000 {
> compatible = "mediatek,mt8516-uart",
> "mediatek,mt6577-uart";
> @@ -284,6 +305,9 @@ uart0: serial@11005000 {
> clocks = <&topckgen CLK_TOP_UART0_SEL>,
> <&topckgen CLK_TOP_UART0>;
> clock-names = "baud", "bus";
> + dmas = <&apdma 0
> + &apdma 1>;
> + dma-names = "tx", "rx";
> status = "disabled";
> };
>
> @@ -295,6 +319,9 @@ uart1: serial@11006000 {
> clocks = <&topckgen CLK_TOP_UART1_SEL>,
> <&topckgen CLK_TOP_UART1>;
> clock-names = "baud", "bus";
> + dmas = <&apdma 2
> + &apdma 3>;
> + dma-names = "tx", "rx";
> status = "disabled";
> };
>
> @@ -306,6 +333,9 @@ uart2: serial@11007000 {
> clocks = <&topckgen CLK_TOP_UART2_SEL>,
> <&topckgen CLK_TOP_UART2>;
> clock-names = "baud", "bus";
> + dmas = <&apdma 4
> + &apdma 5>;
> + dma-names = "tx", "rx";
> status = "disabled";
> };
>
>
