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ARC: dma [IOC]: mark DMA devices connected as dma-coherent

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Mark DMA devices on AXS103 and HSDK boards connected through IOC
port as dma-coherent.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Eugeniy Paltsev 2018-07-30 19:26:33 +03:00 committed by Vineet Gupta
parent 3fcbb8260a
commit 678c8110d2
3 changed files with 56 additions and 0 deletions
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26
arch/arc/boot/dts/axc003.dtsi
View File

@ -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
arch/arc/boot/dts/axc003_idu.dtsi
View File

@ -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
arch/arc/boot/dts/hsdk.dts
View File

@ -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;
};
};