From: Sam Protsenko <semen.protsenko@linaro.org>
Date: Thu, 25 Jan 2024 01:38:57 +0000 (-0600)
Subject: arm64: dts: exynos: Add PDMA node for Exynos850
X-Git-Tag: v6.9-rc1~178^2~39^2~7
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c0fe557853f3d4b61c4e2e729061482f4da901db;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: exynos: Add PDMA node for Exynos850

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>
Link: https://lore.kernel.org/r/20240125013858.3986-3-semen.protsenko@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---

diff --git a/arch/arm64/boot/dts/exynos/exynos850.dtsi b/arch/arm64/boot/dts/exynos/exynos850.dtsi
index da3f4a791e686..e7e1171a38649 100644
--- a/arch/arm64/boot/dts/exynos/exynos850.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos850.dtsi
@@ -184,6 +184,16 @@
 			clock-names = "fin_pll", "mct";
 		};
 
+		pdma0: dma-controller@120c0000 {
+			compatible = "arm,pl330", "arm,primecell";
+			reg = <0x120c0000 0x1000>;
+			clocks = <&cmu_core CLK_GOUT_PDMA_CORE_ACLK>;
+			clock-names = "apb_pclk";
+			#dma-cells = <1>;
+			interrupts = <GIC_SPI 479 IRQ_TYPE_LEVEL_HIGH>;
+			arm,pl330-broken-no-flushp;
+		};
+
 		gic: interrupt-controller@12a01000 {
 			compatible = "arm,gic-400";
 			#interrupt-cells = <3>;