From: Wolfram Sang <wsa+renesas@sang-engineering.com>
To: Biju Das <biju.das.jz@bp.renesas.com>
Cc: Prabhakar <prabhakar.csengg@gmail.com>,
Ulf Hansson <ulf.hansson@linaro.org>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Magnus Damm <magnus.damm@gmail.com>,
"linux-mmc@vger.kernel.org" <linux-mmc@vger.kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-renesas-soc@vger.kernel.org"
<linux-renesas-soc@vger.kernel.org>,
Fabrizio Castro <fabrizio.castro.jz@renesas.com>,
Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@bp.renesas.com>,
Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Subject: Re: [PATCH v4 3/3] mmc: renesas_sdhi: Add support for RZ/V2H(P) SoC
Date: Wed, 3 Jul 2024 11:36:08 +0200 [thread overview]
Message-ID: <ZoUbiEy0AJ_JVVd8@shikoro> (raw)
In-Reply-To: <TYCPR01MB11332F92C1D1987336FA316FD86D72@TYCPR01MB11332.jpnprd01.prod.outlook.com>
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> If I understand correctly,
> VMMC(Always on 3.3V) for card detection -->PWEN pin
> Vqmmc(1.8v-3.3V) for UHS operation for voltage switch-->IOVS pin
If these assumptions are correct, then I am sorry to have missed it. I
thougaht PWEN is for vqmmc. If it is not, then we need two regulators,
one for vmmc and one for vqmmc. This is what the TMIO core expects and
already handles correctly on its own, or? Except for the reset handling
where we need to preserve some value in the SDHI core.
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next prev parent reply other threads:[~2024-07-03 9:36 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-26 13:23 [PATCH v4 0/3] Add SD/MMC support for Renesas RZ/V2H(P) SoC Prabhakar
2024-06-26 13:23 ` [PATCH v4 1/3] dt-bindings: mmc: renesas,sdhi: Document RZ/V2H(P) support Prabhakar
2024-06-26 16:25 ` Conor Dooley
2024-07-03 9:38 ` Wolfram Sang
2024-07-04 18:27 ` Lad, Prabhakar
2024-07-22 13:19 ` Lad, Prabhakar
2024-06-26 13:23 ` [PATCH v4 2/3] mmc: tmio: Use MMC core APIs to control the vqmmc regulator Prabhakar
2024-06-26 13:23 ` [PATCH v4 3/3] mmc: renesas_sdhi: Add support for RZ/V2H(P) SoC Prabhakar
2024-06-27 9:56 ` Biju Das
2024-07-03 9:36 ` Wolfram Sang [this message]
2024-07-03 11:11 ` Biju Das
2024-07-03 9:43 ` Wolfram Sang
2024-07-04 15:56 ` Lad, Prabhakar
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