From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A79C92571CA; Tue, 20 May 2025 07:18:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747725533; cv=none; b=PTVnPZEflMHE67969jVuj+1EqIi9nDGMy7ds6CifsJIZmwziG1bsS1wmWIuoBg+dKEXUJPur7bq73cs1SWdqXJwH9edCpA4Nv+Dr8NCgBDm0LbchPpjFmq6ZG/6kaB7nhW9QBdgdIovjOBwX1W+CG99hh6UzubY3LK+j1Y+d/8I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747725533; c=relaxed/simple; bh=0dgpHM6X5ylXIfc/EcEGibieH0olYU53fdjUR+UZzG0=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=BKzHGZG1mxXcZ8Uo8/63uaLrPlufSkDWxUElaHK3lfykZ7NcA+emQxVuoLsBOPGxOxX7MmMRs6nnPrKlpIG7Iqrj1AlmrxIFwyUzwi/71LpplTsRUSWMPH1MjwlYOeBLZE+aDbEIxeB/Me0MFiNDtBdyKrMbkgL23q8+0A/yzws= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=VIHV3IEn; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="VIHV3IEn" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 742FAC4CEE9; Tue, 20 May 2025 07:18:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1747725532; bh=0dgpHM6X5ylXIfc/EcEGibieH0olYU53fdjUR+UZzG0=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=VIHV3IEnVoIZr59y520JyK1rDWYem9zcOuYv+W7yr2vZpklL0JQkgvherUZwr6v7n nHX1oOIpkaJg0eoTOKvrl0PRY486zrZjrtFAV430NT5ktpAjmqAAVVteq7DyZr8iq+ dsLSbYA39nxk18DwCaiPAZUqmPbK2hTJPa7eE5Ia3dkcdB86Alg93Ck79evVkyPgMV zxCCId2RDQ0vz60xAe/D/Wcabw19XCk7w5dV5YUjbbVZ8BRBiC/fZsFGd9mZV34NO+ f5TYhWfRiRz3MMPziD5jg+RyZGFc28jmY7Z63QxECAN8q5M0jL2wPu4Wk7Aham9TFE iLzrccnjGcicg== Message-ID: <8c6d37bb-8e07-4e44-bef1-f4376b54b853@kernel.org> Date: Tue, 20 May 2025 09:18:46 +0200 Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH V1 1/3] dt-bindings: mmc: qcom: Document level shifter flag for SD card To: Sarthak Garg Cc: Ulf Hansson , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Adrian Hunter , Bhupesh Sharma , linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, quic_cang@quicinc.com, quic_nguyenb@quicinc.com, quic_rampraka@quicinc.com, quic_pragalla@quicinc.com, quic_sayalil@quicinc.com, quic_nitirawa@quicinc.com, quic_sachgupt@quicinc.com, quic_bhaskarv@quicinc.com, quic_narepall@quicinc.com, kernel@quicinc.com References: <20241107080505.29244-1-quic_sartgarg@quicinc.com> <20241107080505.29244-2-quic_sartgarg@quicinc.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 20/05/2025 08:58, Sarthak Garg wrote: > > > On 11/7/2024 3:29 PM, Krzysztof Kozlowski wrote: >> On Thu, Nov 07, 2024 at 01:35:03PM +0530, Sarthak Garg wrote: >>> Introduce a flag to indicate if the Qualcomm platform has a level >>> shifter for SD cards. With level shifter addition some extra delay is >>> seen on RX data path leading to CRC errors. To compensate these delays >>> and avoid CRC errors below things needs to be done: >>> >>> 1) Enable tuning for SDR50 mode >>> 2) Limit HS mode frequency to 37.5MHz from 50MHz >>> >>> Add this flag for all targets with a level shifter to handle these >>> issues for SD card. >>> >>> Signed-off-by: Sarthak Garg >>> --- >>> Documentation/devicetree/bindings/mmc/sdhci-msm.yaml | 3 +++ >>> 1 file changed, 3 insertions(+) >>> >> >> This wasn't tested, so just short review - platform means SoC usually, >> so this looks SoC specific, thus implied by compatible. >> > Best regards, >> Krzysztof >> > > Sure will redesign this logic and use compatible in patch V2. Hi, I hope you are well and that was just some mishap, but I cannot help but notice that you received review within two hours after posting patch, but now you responded to my review after 6 months. Sometimes I really consider reviewing at the end of 2 weeks - the usual maximum time frame. Best regards, Krzysztof