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Thu, 18 Sep 2025 05:20:44 +0000 (GMT) From: "Alim Akhtar" To: "'Ram Kumar Dwivedi'" , , , , , , , , Cc: , , , , "'Nitin Rawat'" In-Reply-To: <20250917140933.2042689-4-quic_rdwivedi@quicinc.com> Subject: RE: [PATCH V6 3/4] ufs: pltfrm: Add DT support to limit HS gear and gear rate Date: Thu, 18 Sep 2025 10:50:42 +0530 Message-ID: <06fc01dc285b$fcb77a10$f6266e30$@samsung.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Outlook 16.0 Thread-Index: AQJRoHUYa79wgWtyawBlQOaHwFj68gIsk9d6Alr8OoKziTpyYA== Content-Language: en-us X-CMS-MailID: 20250918052046epcas5p31bb142541f8c78b87e29725513303a90 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" CMS-TYPE: 105P cpgsPolicy: CPGSC10-542,Y X-CFilter-Loop: Reflected X-CMS-RootMailID: 20250917141032epcas5p33b752eff99e2ffee97dc64604d5dc01a References: <20250917140933.2042689-1-quic_rdwivedi@quicinc.com> <20250917140933.2042689-4-quic_rdwivedi@quicinc.com> > -----Original Message----- > From: Ram Kumar Dwivedi > Sent: Wednesday, September 17, 2025 7:40 PM > To: alim.akhtar@samsung.com; avri.altman@wdc.com; bvanassche@acm.org; > robh@kernel.org; krzk+dt@kernel.org; conor+dt@kernel.org; mani@kernel.org; > James.Bottomley@HansenPartnership.com; martin.petersen@oracle.com > Cc: linux-scsi@vger.kernel.org; devicetree@vger.kernel.org; linux- > kernel@vger.kernel.org; linux-arm-msm@vger.kernel.org; Nitin Rawat > > Subject: [PATCH V6 3/4] ufs: pltfrm: Add DT support to limit HS gear and gear > rate > > Introduce parsing of 'limit-hs-gear' and 'limit-gear-rate' > device tree properties to restrict high-speed gear and rate during initialization. > > This is useful in cases where the customer board may have signal integrity, clock > configuration or layout issues that prevent reliable operation at higher gears. > Such limitations are especially critical in those platforms, where stability is > prioritized over peak performance. > > Co-developed-by: Nitin Rawat > Signed-off-by: Nitin Rawat > Signed-off-by: Ram Kumar Dwivedi > --- Reviewed-by: Alim Akhtar