From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sender4-op-o11.zoho.com (sender4-op-o11.zoho.com [136.143.188.11]) (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 014BC30149F; Fri, 24 Jul 2026 22:17:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.188.11 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784931440; cv=pass; b=alvOo2bM8lTSV0xS1KLVG4T1WDS4Vq8I0TcS/BsbY3elqjay/oTZzrm2RnGxkVii8zO2QWMnWSFJQ2Sg5OHhaI6k2nB8Wec7tN8cdp462IP+t5+cGjNMYBSqMmRUchWLkqqzORmrV0y8yaF9CWrS+CUCkJC6aMoWOgVIe57uz+c= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784931440; c=relaxed/simple; bh=DQH32El6cw4Ci0pnS0ptPdzMWl39sxUAj/u38lvyPGQ=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=KbpoQUW+VADvyvp5BHvZt4k96eS1EkeLF4UwLD9qlo4MTgb0C5YaY8l05WJvd2l7HY+hpawxfksC89Gi7rmuIMXXfVCoVu18lTedShE9eCtBsOlht2mOYUPMIHD9DwIZMpXA6QtycazSR9jn3YHcSy13I54MjdPM3oiRT7JsyNU= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (1024-bit key) header.d=collabora.com header.i=sebastian.reichel@collabora.com header.b=g881cKnc; arc=pass smtp.client-ip=136.143.188.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=collabora.com header.i=sebastian.reichel@collabora.com header.b="g881cKnc" ARC-Seal: i=1; a=rsa-sha256; t=1784931435; cv=none; d=zohomail.com; s=zohoarc; b=JO2fMn0Q+tl+QUwMFV7B+DlhbcS5M9u7LCGOqgrXtMxsjI37xnwfvWGFnSpwTT9dkYY4sVXq+d115+CB8pBb5rpYkstTbqQ6R6o1AA/4WhHw5DixtxLo/0dSKSOcKQwbhI6t3yMfDNX+Y9glchHGE46P0s/FVXcfE2cP9rMZCcg= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1784931435; h=Content-Type:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:Subject:Subject:To:To:Message-Id:Reply-To; bh=ezFqmnApLrstpqxs9JaxGJELyjuD4fmZx1ZFt5W3YfM=; b=P+GFXiJup9RM/V2aMLo7+VAUNRXy2AukZhtO8n8C7hdB1NI7J35wfIbTAQH/T2qCZp7a3s6+718yweewH1SeYb5O/ZS9dnYTFEqPVFb9hqPQ6UfyaE3MayOnMhiHqZkHNx6lKoHjq+BJzkDV25XmqCT0eIj/9i9ff6pemnRzbdw= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=sebastian.reichel@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1784931435; s=zohomail; d=collabora.com; i=sebastian.reichel@collabora.com; h=Date:Date:From:From:To:To:Cc:Cc:Subject:Subject:Message-ID:MIME-Version:Content-Type:In-Reply-To:Message-Id:Reply-To; bh=ezFqmnApLrstpqxs9JaxGJELyjuD4fmZx1ZFt5W3YfM=; b=g881cKncRFZM0VUo5nFv75Q2JzeVS1rTA4V2AjYFu2bqrWEU+cvHn2yiHgkdN9R6 CEoRE2/Gs2Pd0N0g9JJghIOX/olTXZ6Q82l74ea1PvuPXlouvblF5At50YOLfb05bZH 3kB1t1KMfNv+/OuI5ThGmm7Mcx2bfBRPPkfbBwF4= Received: by mx.zohomail.com with SMTPS id 178493143424377.11333325772819; Fri, 24 Jul 2026 15:17:14 -0700 (PDT) Received: by venus (Postfix, from userid 1000) id 90E9F181F16; Sat, 25 Jul 2026 00:17:10 +0200 (CEST) Date: Sat, 25 Jul 2026 00:17:10 +0200 From: Sebastian Reichel To: Judith Mendez Cc: Ulf Hansson , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 2/3] mmc: core: Add mmc_delay_us() for microsecond precision delays Message-ID: References: <20260722205701.372789-1-jm@ti.com> <20260722205701.372789-3-jm@ti.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="xbwz7hh67i74nafw" Content-Disposition: inline In-Reply-To: <20260722205701.372789-3-jm@ti.com> X-Zoho-Virus-Status: 1 X-Zoho-AV-Stamp: zmail-av-0.2.10.1.5.2/284.919.37 X-ZohoMailClient: External --xbwz7hh67i74nafw Content-Type: text/plain; protected-headers=v1; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Subject: Re: [PATCH v2 2/3] mmc: core: Add mmc_delay_us() for microsecond precision delays MIME-Version: 1.0 Hi, On Wed, Jul 22, 2026 at 03:57:00PM -0500, Judith Mendez wrote: > Add mmc_delay_us() to support microsecond-granularity delays needed > in MMC framework. It uses 25% margin consistent with mmc_delay() for > timing flexibility. >=20 > Signed-off-by: Judith Mendez > --- > Changes since v1: > - add patch 2/3 > --- Looks like you should just use fsleep() from . Greetings, -- Sebastian > drivers/mmc/core/core.h | 13 +++++++++++++ > 1 file changed, 13 insertions(+) >=20 > diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h > index a028b48be1644..55e9fb3bab9f7 100644 > --- a/drivers/mmc/core/core.h > +++ b/drivers/mmc/core/core.h > @@ -73,6 +73,19 @@ static inline void mmc_delay(unsigned int ms) > msleep(ms); > } > =20 > +static inline void mmc_delay_us(unsigned int us) > +{ > + if (us < 1000) { > + usleep_range(us, us + (us >> 2)); > + } else { > + unsigned int rem_us =3D us % 1000; > + > + msleep(us / 1000); > + if (rem_us) > + usleep_range(rem_us, rem_us + (rem_us >> 2)); > + } > +} > + > void mmc_rescan(struct work_struct *work); > void mmc_start_host(struct mmc_host *host); > void __mmc_stop_host(struct mmc_host *host); > --=20 > 2.54.0 >=20 >=20 --xbwz7hh67i74nafw Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE72YNB0Y/i3JqeVQT2O7X88g7+poFAmpj5GEACgkQ2O7X88g7 +prZMxAAh815X1v+LlRjLLU6UcHD7YF72x1z5AQ8I2/g/Lst+PTKFD0X+n8NDDkp ngZf4bq6FzeqjdJC0/KiCwfshgHHL7je05CGHd83sAZs0+DOqDp8n0YxhU6qX5W0 TQahJRWcKWUVHX83BOw7x4xS5pJaTEUTMKsmpJ9Yhakp0gmhGOdo2ObqWdU6u++q PrMz/DBtkf6DPYTNZBsXSaVlgj8fGH5sktnOMWILbwlrEujQfjbkEtxgjnwJuuP4 Sw1D8ia7F9d5hCt5XybdaKJiQueDwcog9e17bsi9Kpzfgm8uKpEYK2P7O/p+iNG4 tlvCHsMdhgpnuavQO7CzaScA2r9SXroP54B/kIXjcGqqOqVy8KYXl1HOuSUzkYm/ CSIAk4FCgIIfrn0C5r0dTEyVzTENK+vpaglBq+D31uh+HaS6tmAErwnpTBxwtVAh 8P0hc9Yf5r99Es4kKG3zRc+pAt/TYeKKY4swCxHhpGMbojrFnPS7hVX4YO0kEHtn BJUBr4yHQHpz7ZoZS/4MAMyyNgz1dN9fUeoipHnUaMhmgdZpyLcJB3pFiV30FlkO TXsYASHMMfYSKBhSv7ofOdqaWt5fIz1feMlMyeo2XGJCIcLfbgNBmxzSkbA1Te8n pxL7AoH+T1WL/NA6pFbAX46oDUuwzjnvnPdsqb8IeV9/OVZsjao= =xwU+ -----END PGP SIGNATURE----- --xbwz7hh67i74nafw--