| Message ID | 20240125013858.3986-3-semen.protsenko@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | arm64: exynos: Enable SPI for Exynos850 | expand |
On Wed, 24 Jan 2024 19:38:57 -0600, Sam Protsenko wrote: > Enable PDMA node. It's needed for multiple peripheral modules, like SPI. > Use "arm,pl330-broken-no-flushp" quirk, as otherwise SPI transfers in > DMA mode often fail with error like this: > > I/O Error: rx-1 tx-1 rx-f tx-f len-786 dma-1 res-(-5) > > > [...] Applied, thanks! [2/3] arm64: dts: exynos: Add PDMA node for Exynos850 https://git.kernel.org/krzk/linux/c/c0fe557853f3d4b61c4e2e729061482f4da901db Best regards,
diff --git a/arch/arm64/boot/dts/exynos/exynos850.dtsi b/arch/arm64/boot/dts/exynos/exynos850.dtsi index da3f4a791e68..618bc674896e 100644 --- a/arch/arm64/boot/dts/exynos/exynos850.dtsi +++ b/arch/arm64/boot/dts/exynos/exynos850.dtsi @@ -184,6 +184,16 @@ timer@10040000 { clock-names = "fin_pll", "mct"; }; + pdma0: dma-controller@120c0000 { + compatible = "arm,pl330", "arm,primecell"; + reg = <0x120c0000 0x1000>; + interrupts = <GIC_SPI 479 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&cmu_core CLK_GOUT_PDMA_CORE_ACLK>; + clock-names = "apb_pclk"; + arm,pl330-broken-no-flushp; + #dma-cells = <1>; + }; + gic: interrupt-controller@12a01000 { compatible = "arm,gic-400"; #interrupt-cells = <3>;
Enable PDMA node. It's needed for multiple peripheral modules, like SPI. Use "arm,pl330-broken-no-flushp" quirk, as otherwise SPI transfers in DMA mode often fail with error like this: I/O Error: rx-1 tx-1 rx-f tx-f len-786 dma-1 res-(-5) Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org> --- Changes in v2: - Ordered PDMA node by unit address arch/arm64/boot/dts/exynos/exynos850.dtsi | 10 ++++++++++ 1 file changed, 10 insertions(+)