linux-kernel - [PATCH 4/6] Revert "arm64: dts: renesas: r8a77965: Enable DMA for SCIF2"

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Message-Id: <20190504004258.23574-5-erosca@de.adit-jv.com>
Date:   Sat,  4 May 2019 02:42:56 +0200
From:   Eugeniu Rosca <roscaeugeniu@...il.com>
To:     Geert Uytterhoeven <geert+renesas@...der.be>,
        Simon Horman <horms+renesas@...ge.net.au>,
        Chris Brandt <chris.brandt@...esas.com>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Ulrich Hecht <ulrich.hecht+renesas@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     "George G . Davis" <george_davis@...tor.com>,
        Andy Lowe <andy_lowe@...tor.com>,
        linux-renesas-soc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Magnus Damm <magnus.damm@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Eugeniu Rosca <erosca@...adit-jv.com>,
        Eugeniu Rosca <roscaeugeniu@...il.com>
Subject: [PATCH 4/6] Revert "arm64: dts: renesas: r8a77965: Enable DMA for SCIF2"

This reverts commit 05c8478abd485507c25aa565afab604af8d8fe46.

Both empirically and based on the existing documentation, it looks like
SCIF2 does not support DMA. Let's disable it. Full reasoning is given in
commit ("Revert "arm64: dts: renesas: r8a7796: Enable DMA for SCIF2"").

Fixes: 05c8478abd4855 ("arm64: dts: renesas: r8a77965: Enable DMA for SCIF2")
Signed-off-by: Eugeniu Rosca <erosca@...adit-jv.com>
---
 arch/arm64/boot/dts/renesas/r8a77965.dtsi | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/arm64/boot/dts/renesas/r8a77965.dtsi b/arch/arm64/boot/dts/renesas/r8a77965.dtsi
index 9763d108e183..979f14d1fcc4 100644
--- a/arch/arm64/boot/dts/renesas/r8a77965.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77965.dtsi
@@ -1068,9 +1068,6 @@
 				 <&cpg CPG_CORE R8A77965_CLK_S3D1>,
 				 <&scif_clk>;
 			clock-names = "fck", "brg_int", "scif_clk";
-			dmas = <&dmac1 0x13>, <&dmac1 0x12>,
-			       <&dmac2 0x13>, <&dmac2 0x12>;
-			dma-names = "tx", "rx", "tx", "rx";
 			power-domains = <&sysc R8A77965_PD_ALWAYS_ON>;
 			resets = <&cpg 310>;
 			status = "disabled";
-- 
2.21.0