ARC: dma [IOC]: mark DMA devices connected as dma-coherent (678c8110) · Commits · 戴 / test

arch/arc/boot/dts/axc003.dtsi

+26 −0

Original line number	Diff line number	Diff line
		@@ -93,6 +93,32 @@
		};
		};

		/*
		* Mark DMA peripherals connected via IOC port as dma-coherent. We do
		* it via overlay because peripherals defined in axs10x_mb.dtsi are
		* used for both AXS101 and AXS103 boards and only AXS103 has IOC (so
		* only AXS103 board has HW-coherent DMA peripherals)
		* We don't need to mark pgu@17000 as dma-coherent because it uses
		* external DMA buffer located outside of IOC aperture.
		*/
		axs10x_mb {
		ethernet@0x18000 {
		dma-coherent;
		};

		ehci@0x40000 {
		dma-coherent;
		};

		ohci@0x60000 {
		dma-coherent;
		};

		mmc@0x15000 {
		dma-coherent;
		};
		};

		/*
		* The DW APB ICTL intc on MB is connected to CPU intc via a
		* DT "invisible" DW APB GPIO block, configured to simply pass thru

+26 −0

Original line number	Diff line number	Diff line
		@@ -100,6 +100,32 @@
		};
		};

		/*
		* Mark DMA peripherals connected via IOC port as dma-coherent. We do
		* it via overlay because peripherals defined in axs10x_mb.dtsi are
		* used for both AXS101 and AXS103 boards and only AXS103 has IOC (so
		* only AXS103 board has HW-coherent DMA peripherals)
		* We don't need to mark pgu@17000 as dma-coherent because it uses
		* external DMA buffer located outside of IOC aperture.
		*/
		axs10x_mb {
		ethernet@0x18000 {
		dma-coherent;
		};

		ehci@0x40000 {
		dma-coherent;
		};

		ohci@0x60000 {
		dma-coherent;
		};

		mmc@0x15000 {
		dma-coherent;
		};
		};

		/*
		* This INTC is actually connected to DW APB GPIO
		* which acts as a wire between MB INTC and CPU INTC.

+4 −0

Original line number	Diff line number	Diff line
		@@ -181,6 +181,7 @@
		resets = <&cgu_rst HSDK_ETH_RESET>;
		reset-names = "stmmaceth";
		mac-address = [00 00 00 00 00 00]; /* Filled in by U-Boot */
		dma-coherent;

		mdio {
		#address-cells = <1>;
		@@ -199,12 +200,14 @@
		compatible = "snps,hsdk-v1.0-ohci", "generic-ohci";
		reg = <0x60000 0x100>;
		interrupts = <15>;
		dma-coherent;
		};

		ehci@40000 {
		compatible = "snps,hsdk-v1.0-ehci", "generic-ehci";
		reg = <0x40000 0x100>;
		interrupts = <15>;
		dma-coherent;
		};

		mmc@a000 {
		@@ -217,6 +220,7 @@
		clock-names = "biu", "ciu";
		interrupts = <12>;
		bus-width = <4>;
		dma-coherent;
		};
		};