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Tue, 04 Nov 2025 09:02:40 -0800 (PST) Received: from 239600423368 named unknown by gmailapi.google.com with HTTPREST; Tue, 4 Nov 2025 12:02:39 -0500 Received: from 239600423368 named unknown by gmailapi.google.com with HTTPREST; Tue, 4 Nov 2025 12:02:39 -0500 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 from: Sean Rhodes Date: Tue, 4 Nov 2025 12:02:39 -0500 X-Gm-Features: AWmQ_bmUXtIcjvu3hDD2CxDQXMRY9CP1oiMXn22Jfdvd6U_1FxjxLljnr0gEBC0 Message-ID: Subject: [PATCH] drivers/misc: rtsx_usb: add UHS/MMC capability flags To: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From a7d64a86c728c8c749229272a22b95b772086911 Mon Sep 17 00:00:00 2001 From: Sean Rhodes Date: Tue, 4 Nov 2025 15:51:10 +0000 Subject: [PATCH 2/5] drivers/misc: rtsx_usb: add UHS/MMC capability flags Introduce per-device flags for SDR50, DDR50 and MMC DDR support and fill them during probe for the RTS5139/RTS5140/RTS5179 variants so the card host drivers can gate their caps in follow-up changes. Cc: Arnd Bergmann Cc: Greg Kroah-Hartman Cc: Ingo Molnar Cc: Thomas Gleixner Cc: Ricky Wu Cc: Desnes Nunes Cc: Christian Heusel Cc: Ulf Hansson Cc: linux-kernel@vger.kernel.org Signed-off-by: Sean Rhodes --- drivers/misc/cardreader/rtsx_usb.c | 10 ++++++++++ include/linux/rtsx_usb.h | 3 +++ 2 files changed, 13 insertions(+) diff --git a/drivers/misc/cardreader/rtsx_usb.c b/drivers/misc/cardreader/rtsx_usb.c index 1830e9ed2521..f65acf4d1164 100644 --- a/drivers/misc/cardreader/rtsx_usb.c +++ b/drivers/misc/cardreader/rtsx_usb.c @@ -653,12 +653,22 @@ static int rtsx_usb_probe(struct usb_interface *intf, mutex_init(&ucr->dev_mutex); ucr->pusb_intf =3D intf; + ucr->supports_sdr50 =3D false; + ucr->supports_ddr50 =3D false; + ucr->supports_mmc_ddr =3D false; /* initialize */ ret =3D rtsx_usb_init_chip(ucr); if (ret) goto out_init_fail; + if ((ucr->product_id =3D=3D 0x0139 && ucr->package =3D=3D LQFP48) || + ucr->product_id =3D=3D 0x0140 || ucr->is_rts5179) { + ucr->supports_sdr50 =3D true; + ucr->supports_ddr50 =3D true; + ucr->supports_mmc_ddr =3D true; + } + /* initialize USB SG transfer timer */ timer_setup(&ucr->sg_timer, rtsx_usb_sg_timed_out, 0); diff --git a/include/linux/rtsx_usb.h b/include/linux/rtsx_usb.h index 276b509c03e3..54c6ea82bf43 100644 --- a/include/linux/rtsx_usb.h +++ b/include/linux/rtsx_usb.h @@ -48,6 +48,9 @@ struct rtsx_ucr { int package; u8 ic_version; bool is_rts5179; + bool supports_sdr50; + bool supports_ddr50; + bool supports_mmc_ddr; unsigned int cur_clk; --=20 2.51.0