From: Pavel Machek <pavel@ucw.cz>
To: Jean-Jacques Hiblot <jjhiblot@traphandler.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Linux LED Subsystem <linux-leds@vger.kernel.org>,
devicetree <devicetree@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [RESEND PATCH v6 2/3] leds: Add driver for the TLC5925 LED controller
Date: Thu, 4 Aug 2022 23:04:12 +0200 [thread overview]
Message-ID: <20220804210412.GA30210@duo.ucw.cz> (raw)
In-Reply-To: <5ba34982-52c7-e41a-fba8-d88d93529e47@traphandler.com>
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On Thu 2022-08-04 22:23:00, Jean-Jacques Hiblot wrote:
> On 31/07/2022 21:28, Andy Shevchenko wrote:
> > On Fri, Jul 22, 2022 at 10:14 AM Jean-Jacques Hiblot
> > <jjhiblot@traphandler.com> wrote:
> > > The TLC5925 is a 16-channels constant-current LED sink driver.
> > > It is controlled via SPI but doesn't offer a register-based interface.
> > > Instead it contains a shift register and latches that convert the
> > > serial input into a parallel output.
> > >
> > > Datasheet: https://www.ti.com/lit/ds/symlink/tlc5925.pdf
> > > Signed-off-by: Jean-Jacques Hiblot <jjhiblot@traphandler.com>
> > > Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
> > Sorry for my slowpokeness, but I just realized that this driver may
> > not be needed. What is the difference to existing gpio-74x164?
>
> It might work. However it might not be as practical and efficient as the
> dedicated LED driver.
>
> I'll give a try.
It is certainly preffered solution. If you decide to re-submit the
driver anyway, please mention that we already have GPIO driver for
compatible chip, and explain why this is superior.
Thanks,
Pavel
--
People of Russia, stop Putin before his war on Ukraine escalates.
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next prev parent reply other threads:[~2022-08-04 21:04 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-22 8:11 [RESEND PATCH v6 0/3] Add support for the TLC5925 Jean-Jacques Hiblot
2022-07-22 8:11 ` [RESEND PATCH v6 1/3] dt-bindings: leds: Add bindings for the TLC5925 controller Jean-Jacques Hiblot
2022-07-22 8:11 ` [RESEND PATCH v6 2/3] leds: Add driver for the TLC5925 LED controller Jean-Jacques Hiblot
2022-07-30 21:27 ` Pavel Machek
2022-07-31 19:28 ` Andy Shevchenko
2022-08-04 20:23 ` Jean-Jacques Hiblot
2022-08-04 20:40 ` Andy Shevchenko
2022-08-04 21:04 ` Pavel Machek [this message]
2022-08-24 8:39 ` Jean-Jacques Hiblot
2022-08-24 8:55 ` Andy Shevchenko
2022-08-24 9:58 ` Jean-Jacques Hiblot
2022-08-24 10:18 ` Andy Shevchenko
2022-08-26 9:11 ` Linus Walleij
2022-07-22 8:11 ` [RESEND PATCH v6 3/3] leds: tlc5925: Add support for non blocking operations Jean-Jacques Hiblot
2022-07-30 21:22 ` Pavel Machek
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