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AJvYcCVlCVbHNQ+N4rlYDG8zE1BZw9LFyDin3Hq//3W0y2H3d8kDSTbzYmXscuAuiaypifxVnFP36/RMavk587VdxT3OdhB6OhMGRJqbWMuskmQcqoQftP4UB3m8/0RnBigLq31DbEXxSvB1 X-Gm-Message-State: AOJu0YxPFVODW9+Rev0Yn6x03EpX3J9SGc4iffXQ/h6z5965N1M6pCdw C4PWOn5AwiCcGXx74ohwbKzGUYt6XM0Hqfxp1xglY+DxWcw70lbEFL0e/BzKipcIUtPXha0zu8W 63WSbrtSfnrSjNKAPT59ZyJ+8vZQ= X-Received: by 2002:a17:90a:558e:b0:297:18f8:ac02 with SMTP id c14-20020a17090a558e00b0029718f8ac02mr103398pji.2.1707844985305; Tue, 13 Feb 2024 09:23:05 -0800 (PST) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <20240202115330.wxkbfmvd76sy3a6a@runtux.com> <20240213170657.puwlx5pjl3odcs2k@runtux.com> In-Reply-To: <20240213170657.puwlx5pjl3odcs2k@runtux.com> From: Fabio Estevam Date: Tue, 13 Feb 2024 14:22:53 -0300 Message-ID: Subject: Re: [PATCH v2 1/1] spi-mxs: Fix chipselect glitch To: Ralf Schlatterbeck Cc: Mark Brown , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , NXP Linux Team , linux-spi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Ralf, On Tue, Feb 13, 2024 at 2:07=E2=80=AFPM Ralf Schlatterbeck = wrote: > > On Fri, Feb 02, 2024 at 12:53:30PM +0100, Ralf Schlatterbeck wrote: > > There was a change in the mxs-dma engine that uses a new custom flag. > > The change was not applied to the mxs spi driver. > > This results in chipselect being deasserted too early. > > This fixes the chipselect problem by using the new flag in the mxs-spi > > driver. > > > > Fixes: ceeeb99cd821 ("dmaengine: mxs: rename custom flag") > > Signed-off-by: Ralf Schlatterbeck > > --- > > For oscilloscope screenshots and a verbose explanation see my blog post > > at https://blog.runtux.com/posts/2024/02/01/ I suggest putting the link to your detailed explanation into the commit log as this is useful information. Reviewed-by: Fabio Estevam