Re: [PATCH v2 2/2] 📤 arm64: dts: mediatek: mt8516: add support for APDMA
From: Fabien Parent <hidden>
Date: 2020-12-09 11:50:15
Also in:
linux-devicetree, linux-mediatek, lkml
Sorry, resending without the unicode symbol in the title On Wed, Dec 9, 2020 at 12:44 PM Fabien Parent [off-list ref] wrote:
quoted hunk ↗ jump to hunk
Add support the APDMA IP on MT8516. APDMA is a DMA controller for UARTs. Signed-off-by: Fabien Parent <redacted> --- 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"; }; --2.29.2
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