From: Eugeniu Rosca <roscaeugeniu@gmail.com>
To: Geert Uytterhoeven <geert+renesas@glider.be>,
Simon Horman <horms+renesas@verge.net.au>,
Chris Brandt <chris.brandt@renesas.com>,
Wolfram Sang <wsa+renesas@sang-engineering.com>,
Ulrich Hecht <ulrich.hecht+renesas@gmail.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "George G . Davis" <george_davis@mentor.com>,
Andy Lowe <andy_lowe@mentor.com>,
linux-renesas-soc@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, Magnus Damm <magnus.damm@gmail.com>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Eugeniu Rosca <erosca@de.adit-jv.com>,
Eugeniu Rosca <roscaeugeniu@gmail.com>
Subject: [PATCH 3/6] arm64: dts: renesas: r8a7795: zap dma configuration in scif2
Date: Sat, 4 May 2019 02:42:55 +0200 [thread overview]
Message-ID: <20190504004258.23574-4-erosca@de.adit-jv.com> (raw)
In-Reply-To: <20190504004258.23574-1-erosca@de.adit-jv.com>
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: eb21089c32054e ("arm64: dts: renesas: r8a7795: Add missing SYS-DMAC2 dmas")
Fixes: 49af46b4095672 ("arm64: renesas: r8a7795: Add all SCIF nodes")
Signed-off-by: Eugeniu Rosca <erosca@de.adit-jv.com>
---
arch/arm64/boot/dts/renesas/r8a7795.dtsi | 3 ---
1 file changed, 3 deletions(-)
diff --git a/arch/arm64/boot/dts/renesas/r8a7795.dtsi b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
index abeac3059383..7704bd46afdf 100644
--- a/arch/arm64/boot/dts/renesas/r8a7795.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
@@ -1323,9 +1323,6 @@
<&cpg CPG_CORE R8A7795_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 R8A7795_PD_ALWAYS_ON>;
resets = <&cpg 310>;
status = "disabled";
--
2.21.0
next prev parent reply other threads:[~2019-05-04 0:45 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-04 0:42 [PATCH 0/6] Zap SCIF2 DMA configuration in R-Car Gen3 DTS Eugeniu Rosca
2019-05-04 0:42 ` [PATCH 1/6] serial: sh-sci: Reveal ptrval in dev_dbg Eugeniu Rosca
2019-05-06 13:47 ` Simon Horman
2019-05-06 15:24 ` Eugeniu Rosca
2019-05-06 16:46 ` Geert Uytterhoeven
2019-05-06 17:12 ` Eugeniu Rosca
2019-05-04 0:42 ` [PATCH 2/6] Revert "arm64: dts: renesas: r8a7796: Enable DMA for SCIF2" Eugeniu Rosca
2019-05-06 10:02 ` Geert Uytterhoeven
2019-05-06 19:42 ` Eugeniu Rosca
[not found] ` <1557413011-1662-1-git-send-email-george_davis@mentor.com>
2019-05-10 17:10 ` [PATCH] serial: sh-sci: disable DMA for uart_console Eugeniu Rosca
2019-05-10 18:38 ` George G. Davis
2019-05-13 10:28 ` Eugeniu Rosca
2019-05-13 11:13 ` Geert Uytterhoeven
2019-05-13 11:42 ` Simon Horman
2019-05-13 13:51 ` Wolfram Sang
2019-05-13 15:43 ` George G. Davis
2019-05-20 2:18 ` [PATCH 2/6] Revert "arm64: dts: renesas: r8a7796: Enable DMA for SCIF2" Yoshihiro Shimoda
2019-05-20 7:37 ` Geert Uytterhoeven
2019-05-20 9:52 ` Yoshihiro Shimoda
2019-05-04 0:42 ` Eugeniu Rosca [this message]
2019-05-04 0:42 ` [PATCH 4/6] Revert "arm64: dts: renesas: r8a77965: " Eugeniu Rosca
2019-05-04 0:42 ` [PATCH 5/6] Revert "arm64: dts: renesas: r8a77990: " Eugeniu Rosca
2019-05-04 0:42 ` [PATCH 6/6] Revert "arm64: dts: renesas: r8a77995: add " Eugeniu Rosca
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