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[176.247.75.158]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49e2212193esm17394445e9.1.2026.09.10.02.16.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Sep 2026 02:16:36 -0700 (PDT) Message-ID: <71023ac4c8f2eab6dc5f7dc135fd22d2f07a5d5f.camel@baylibre.com> Subject: Re: [PATCH v4] i2c: Add FTDI FT4222H USB I2C adapter From: Francesco Lavra To: Andi Shyti , linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org Date: Thu, 10 Sep 2026 11:16:35 +0200 In-Reply-To: <7d9d7bfac46269c1a66b6aff25a28d12354cc3c3.camel@baylibre.com> References: <20260225112046.2394231-1-flavra@baylibre.com> <7d9d7bfac46269c1a66b6aff25a28d12354cc3c3.camel@baylibre.com> Organization: BayLibre Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.46.4-2 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Mon, 2026-07-27 at 10:07 +0200, Francesco Lavra wrote: > Another friendly ping >=20 > On Thu, 2026-04-30 at 17:40 +0200, Francesco Lavra wrote: > > Friendly ping > >=20 > > On Wed, 2026-02-25 at 12:20 +0100, Francesco Lavra wrote: > > > FT4222H exports a USB interface to operate as I2C bus master when set > > > up > > > (via the DCNF pins) in configuration mode 0 or 3. > > > The USB communication protocol implemented by the FT4222 chip is not > > > publicly documented, therefore the name assigned to the various > > > defines > > > used in the USB communication code is a semi-educated guess after > > > sniffing > > > USB traffic generated with the FTDI FT4222 userspace library. > > >=20 > > > Signed-off-by: Francesco Lavra It has been more than six months since I sent v4 of this patch, and there has not been any followup on this, other than my attempts to revive this thread. And that is after all review comments from the previous iterations have been addressed. Is there anything else I should do to help this patch move forward? Thanks