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Thu, 12 Mar 2026 05:16:07 -0700 (PDT) From: Sean Rhodes To: linux-mmc@vger.kernel.org, Ulf Hansson , Greg Kroah-Hartman Cc: Ricky Wu , Avri Altman , Binbin Zhou , Dan Carpenter , Jisheng Zhang , Nathan Chancellor , Arnd Bergmann , Huacai Chen , Ingo Molnar , Thomas Gleixner , linux-kernel@vger.kernel.org Subject: [PATCH v2 RESEND 4/6] mmc: rtsx_usb_sdmmc: program SD30 mode for UHS SDR12/SDR25 Date: Thu, 12 Mar 2026 12:15:57 +0000 Message-ID: <20260312121559.19197-5-sean@starlabs.systems> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260312121559.19197-1-sean@starlabs.systems> References: <20260305194052.5120-1-sean@starlabs.systems> <20260312121559.19197-1-sean@starlabs.systems> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The driver advertises UHS SDR12 and SDR25 support, but sd_set_timing() only programs SD_30_MODE for SDR50/SDR104. When the core selects SDR12 or SDR25 this leaves the controller in SD 2.0 mode. Program SD_30_MODE for SDR12 and SDR25 too. Tested: Realtek RTS5129 (0bda:0129) + tray + Lexar 2TB SDXC Tested: timing spec SDR104 @ 208 MHz, signal voltage 1.8 V (2026-02-24) Signed-off-by: Sean Rhodes --- drivers/mmc/host/rtsx_usb_sdmmc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/rtsx_usb_sdmmc.c b/drivers/mmc/host/rtsx_usb_= sdmmc.c index 8d5ebe92018e..62f6b3f76c7b 100644 --- a/drivers/mmc/host/rtsx_usb_sdmmc.c +++ b/drivers/mmc/host/rtsx_usb_sdmmc.c @@ -1231,6 +1231,8 @@ static int sd_set_timing(struct rtsx_usb_sdmmc *host, =20 switch (timing) { case MMC_TIMING_UHS_SDR104: + case MMC_TIMING_UHS_SDR12: + case MMC_TIMING_UHS_SDR25: case MMC_TIMING_UHS_SDR50: rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG1, 0x0C | SD_ASYNC_FIFO_RST, @@ -1298,13 +1300,14 @@ static void sdmmc_set_ios(struct mmc_host *mmc, str= uct mmc_ios *ios) =20 switch (ios->timing) { case MMC_TIMING_UHS_SDR104: + case MMC_TIMING_UHS_SDR12: + case MMC_TIMING_UHS_SDR25: case MMC_TIMING_UHS_SDR50: host->ssc_depth =3D SSC_DEPTH_2M; host->vpclk =3D true; host->double_clk =3D false; break; case MMC_TIMING_UHS_DDR50: - case MMC_TIMING_UHS_SDR25: host->ssc_depth =3D SSC_DEPTH_1M; break; default: --=20 2.51.0