linux-kernel - [PATCH 0/6] Zap SCIF2 DMA configuration in R-Car Gen3 DTS

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Date:   Sat,  4 May 2019 02:42:52 +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 0/6] Zap SCIF2 DMA configuration in R-Car Gen3 DTS

This series is triggered by a regression on M3 targets caused by
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=703db5d1b175
("arm64: dts: renesas: r8a7796: Enable DMA for SCIF2"), when applied
on top of rcar-3.9.x Renesas official kernel.

This collection of patches attempts to consistently propagate the fix
across the existing R-Car3 DTS. Full story is placed into
commit ("Revert "arm64: dts: renesas: r8a7796: Enable DMA for SCIF2"").

While debugging drivers/tty/serial/sh-sci.c, a minor update avoiding
__ptrval__ in dev_dbg() is included here as well.

Tested using v5.1-rc7-131-gea9866793d1e on:
 - H3-ES2.0-ULCB
 - M3N-ES1.1-ULCB
 - M3-ES1.1-Salvator-XS

Eugeniu Rosca (6):
  serial: sh-sci: Reveal ptrval in dev_dbg
  Revert "arm64: dts: renesas: r8a7796: Enable DMA for SCIF2"
  arm64: dts: renesas: r8a7795: zap dma configuration in scif2
  Revert "arm64: dts: renesas: r8a77965: Enable DMA for SCIF2"
  Revert "arm64: dts: renesas: r8a77990: Enable DMA for SCIF2"
  Revert "arm64: dts: renesas: r8a77995: add DMA for SCIF2"

 arch/arm64/boot/dts/renesas/r8a7795.dtsi  | 3 ---
 arch/arm64/boot/dts/renesas/r8a7796.dtsi  | 3 ---
 arch/arm64/boot/dts/renesas/r8a77965.dtsi | 3 ---
 arch/arm64/boot/dts/renesas/r8a77990.dtsi | 4 +---
 arch/arm64/boot/dts/renesas/r8a77995.dtsi | 3 ---
 drivers/tty/serial/sh-sci.c               | 8 ++++----
 6 files changed, 5 insertions(+), 19 deletions(-)

-- 
2.21.0