From: Wolfram Sang <wsa@the-dreams.de>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Fabrizio Castro <fabrizio.castro@bp.renesas.com>,
Ulf Hansson <ulf.hansson@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Linus Walleij <linus.walleij@linaro.org>,
Wolfram Sang <wsa+renesas@sang-engineering.com>,
Simon Horman <horms@verge.net.au>,
Magnus Damm <magnus.damm@gmail.com>,
Linux MMC List <linux-mmc@vger.kernel.org>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@vger.kernel.org>,
Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
"open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
Chris Paterson <Chris.Paterson2@renesas.com>,
Biju Das <biju.das@bp.renesas.com>
Subject: Re: [PATCH 1/4] dt-bindings: mmc: renesas_sdhi: Add r8a77470 support
Date: Mon, 24 Sep 2018 14:26:37 +0200 [thread overview]
Message-ID: <20180924122637.GA1661@kunai> (raw)
In-Reply-To: <CAMuHMdVY1ty4fGoBg7qxfkRaEBEgBEK5YDgwNryDx_tCUYpiaw@mail.gmail.com>
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> It seems RZ/G1C has two slighty different types of SD card interfaces:
> 1. SDHI0 and SDHI2 use SYS-DMAC,
> 2. SDHI1 can also be used as an MMC interface, and has an internal DMAC.
>
> Do we need to distinguish between them using the compatible value, or
> are there other ways?
Yes, that seems to need an update to our current implementation which is
per-SoC only. One idea from my side would be to whitelist SYS-DMAC for
this compatible and then check if dma-properties are present, otherwise
fall back to internal DMAC?
Fabrizio, did you have any plans how to handle that?
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next prev parent reply other threads:[~2018-09-24 12:26 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-21 11:55 [PATCH 0/4] Add SDHI2 support to iwg23s Fabrizio Castro
2018-09-21 11:55 ` [PATCH 1/4] dt-bindings: mmc: renesas_sdhi: Add r8a77470 support Fabrizio Castro
2018-09-22 18:43 ` Wolfram Sang
2018-09-24 9:11 ` Simon Horman
2018-09-24 9:37 ` Geert Uytterhoeven
2018-09-24 12:26 ` Wolfram Sang [this message]
2018-09-24 12:44 ` Geert Uytterhoeven
2018-09-24 18:33 ` Fabrizio Castro
2018-09-25 6:47 ` Geert Uytterhoeven
2018-09-25 7:47 ` Simon Horman
2018-09-25 7:55 ` Geert Uytterhoeven
2018-09-25 8:22 ` Wolfram Sang
2018-09-25 8:28 ` Geert Uytterhoeven
2018-09-25 12:45 ` Fabrizio Castro
2018-09-25 13:03 ` Geert Uytterhoeven
2018-09-25 13:12 ` Fabrizio Castro
2018-09-26 18:08 ` Fabrizio Castro
2018-09-21 11:55 ` [PATCH 2/4] pinctrl: sh-pfc: r8a77470: Add SDHI2 voltage switch Fabrizio Castro
2018-09-22 18:44 ` Wolfram Sang
2018-09-24 9:51 ` Geert Uytterhoeven
2018-09-24 18:36 ` Fabrizio Castro
2018-09-21 11:55 ` [PATCH 3/4] ARM: dts: r8a77470: Add SDHI2 support Fabrizio Castro
2018-09-22 18:44 ` Wolfram Sang
2018-09-24 9:12 ` Simon Horman
2018-09-28 9:31 ` Fabrizio Castro
2018-10-01 13:13 ` Simon Horman
2018-10-01 13:41 ` Fabrizio Castro
2018-09-24 9:16 ` Simon Horman
2018-09-21 11:55 ` [PATCH 4/4] ARM: dts: iwg23s-sbc: Add uSD card support Fabrizio Castro
2018-09-22 18:44 ` Wolfram Sang
2018-09-24 9:13 ` Simon Horman
2018-09-24 9:30 ` Fabrizio Castro
2018-09-24 10:03 ` Geert Uytterhoeven
2018-09-24 15:09 ` Fabrizio Castro
2018-09-24 15:34 ` Simon Horman
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