linux-kernel - Re: [PATCH v3 0/2] Enable 64-bit polling mode for R-Car Gen3 and RZ/G2+ family

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Message-ID: <aLGAaKYucaW1vPCg@shikoro>
Date: Fri, 29 Aug 2025 12:26:48 +0200
From: Wolfram Sang <wsa+renesas@...g-engineering.com>
To: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: Biju <biju.das.au@...il.com>, Ulf Hansson <ulf.hansson@...aro.org>,
	Biju Das <biju.das.jz@...renesas.com>, linux-mmc@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH v3 0/2] Enable 64-bit polling mode for R-Car Gen3 and
 RZ/G2+ family


> I believe some of the SoCs that do not support 64-bit accesses, do
> support 32-bit accesses. Do you think it would be worthwhile adding
> support for that, too?

We have that already? Check the context after the chunk added to
tmio_mmc_core.c:

        if (host->pdata->flags & TMIO_MMC_32BIT_DATA_PORT) {
                u32 data = 0;
                u32 *buf32 = (u32 *)buf;
	...


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