From: Wolfram Sang <wsa+renesas@sang-engineering.com>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Biju Das <biju.das.jz@bp.renesas.com>,
Ulf Hansson <ulf.hansson@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Linux MMC List <linux-mmc@vger.kernel.org>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@vger.kernel.org>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Chris Paterson <Chris.Paterson2@renesas.com>,
Biju Das <biju.das@bp.renesas.com>,
Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@bp.renesas.com>,
Linux-Renesas <linux-renesas-soc@vger.kernel.org>
Subject: Re: [PATCH v4 2/2] dt-bindings: mmc: renesas,sdhi: Document RZ/G2L bindings
Date: Fri, 12 Nov 2021 12:56:23 +0100 [thread overview]
Message-ID: <YY5WZ1r10EphBJEZ@shikoro> (raw)
In-Reply-To: <CAMuHMdVXpn7X3Tm_ouq6DVUDP4mxMO8EObFjtfEU4pX6sodo9A@mail.gmail.com>
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Hi everyone,
> > + - description: IMCLK, SDHI channel main clock1.
Sounds like "core"
> > + - description: IMCLK2, SDHI channel main clock2. When this clock is
> > + turned off, external SD card detection cannot be
> > + detected.
"cd"
> > + - description: CLK_HS, SDHI channel High speed clock which operates
> > + 4 times that of SDHI channel main clock1.
"clkh" compared to the Gen3 bindings to me.
> > + - description: ACLK, SDHI channel bus clock.
This I don't understand. The CPG-MSSR clock?
> Does this actually work with the current Linux SDHI driver? How are
> the extra clocks handled?
It may work out of the box if their HW can have "clkh" enabled all the
time and this is their default. Gen3 has recommendations to disable clkh
for slow transfer modes, so we need handling of clkh
Kind regards,
Wolfram
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next prev parent reply other threads:[~2021-11-12 11:56 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-17 9:03 [PATCH v4 0/2] Document RZ/G2L SDHI controller bindings Biju Das
2021-08-17 9:03 ` [PATCH v4 1/2] dt-bindings: mmc: renesas,sdhi: Fix dtbs-check warning Biju Das
2021-08-18 14:12 ` Rob Herring
2021-08-24 14:56 ` Ulf Hansson
2021-08-17 9:03 ` [PATCH v4 2/2] dt-bindings: mmc: renesas,sdhi: Document RZ/G2L bindings Biju Das
2021-08-18 14:21 ` Rob Herring
2021-08-24 14:56 ` Ulf Hansson
2021-11-12 11:14 ` Geert Uytterhoeven
2021-11-12 11:51 ` Biju Das
2021-11-12 11:56 ` Wolfram Sang [this message]
2021-11-12 12:17 ` Geert Uytterhoeven
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