From: Andreas Kemnade <andreas@kemnade.info>
To: "Jonathan Neuschäfer" <j.neuschaefer@gmx.net>
Cc: linux-kernel@vger.kernel.org, "Lee Jones" <lee.jones@linaro.org>,
"Rob Herring" <robh+dt@kernel.org>,
"Thierry Reding" <thierry.reding@gmail.com>,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
"Alessandro Zummo" <a.zummo@towertech.it>,
"Alexandre Belloni" <alexandre.belloni@bootlin.com>,
"Shawn Guo" <shawnguo@kernel.org>,
"Sascha Hauer" <s.hauer@pengutronix.de>,
"Pengutronix Kernel Team" <kernel@pengutronix.de>,
"Fabio Estevam" <festevam@gmail.com>,
"NXP Linux Team" <linux-imx@nxp.com>,
"Sam Ravnborg" <sam@ravnborg.org>,
"Linus Walleij" <linus.walleij@linaro.org>,
"Heiko Stuebner" <heiko.stuebner@theobroma-systems.com>,
"Stephan Gerhold" <stephan@gerhold.net>,
"Lubomir Rintel" <lkundrak@v3.sk>,
"Mark Brown" <broonie@kernel.org>, allen <allen.chen@ite.com.tw>,
"Mauro Carvalho Chehab" <mchehab+huawei@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
devicetree@vger.kernel.org, linux-pwm@vger.kernel.org,
linux-rtc@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
"Heiko Stuebner" <heiko@sntech.de>,
"Josua Mayer" <josua.mayer@jm0.eu>
Subject: Re: [RFC PATCH 00/10] Netronix embedded controller driver for Kobo and Tolino ebook readers
Date: Tue, 30 Jun 2020 21:22:07 +0200 [thread overview]
Message-ID: <20200630212207.018ad355@aktux> (raw)
In-Reply-To: <20200630071523.GA2983@latitude>
On Tue, 30 Jun 2020 09:15:23 +0200
Jonathan Neuschäfer <j.neuschaefer@gmx.net> wrote:
> On Tue, Jun 30, 2020 at 08:40:51AM +0200, Andreas Kemnade wrote:
> [...]
> > got a chance to test it on a Tolino Shine 2 HD.
> > It uses the RTC from the RC5T619 but backlight seems to go via MSP430
> > EC.
> >
> > I got this.
> >
> > [ 1.453603] ntxec 0-0043: Netronix embedded controller version f110 detected.
> > [ 10.723638] ntxec-rtc 21a0000.i2c:embedded-controller@43:rtc: registered as rtc0
> > [ 10.775276] ntxec-pwm: probe of 21a0000.i2c:embedded-controller@43:pwm failed with error -5
>
> Hmm, -EIO from the PWM driver.
>
Weird...
IOMUXC_SW_PAD_CTL_PAD_I2C1_SDA/SCL is identical between
vendor kernel (heavily patched 3.0.35) and patched mainline.
MX6SL_PAD_I2C1_SCL__I2C1_SCL 0x4001f8b1
MX6SL_PAD_I2C1_SDA__I2C1_SDA 0x4001f8b1
root@tolino2:~# i2cset -f 0 0x43 0xa3 0x0001 w
WARNING! This program can confuse your I2C bus, cause data loss and worse!
I will write to device file /dev/i2c-0, chip address 0x43, data address
0xa3, data 0x01, mode word.
Continue? [Y/n]
Error: Write failed
root@tolino2:~# i2cset -f 0 0x43 0xa3 0x0000 w
WARNING! This program can confuse your I2C bus, cause data loss and worse!
I will write to device file /dev/i2c-0, chip address 0x43, data address
0xa3, data 0x00, mode word.
Continue? [Y/n]
Error: Write failed
but backlight gets toggled. Same behavior on vendor kernel and
in vendor uboot.
That smells.
Regards,
Andreas
next prev parent reply other threads:[~2020-06-30 19:22 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-20 22:39 [RFC PATCH 00/10] Netronix embedded controller driver for Kobo and Tolino ebook readers Jonathan Neuschäfer
2020-06-20 22:39 ` [RFC PATCH 01/10] DT bindings in plain text format Jonathan Neuschäfer
2020-06-22 10:32 ` Lee Jones
2020-06-27 0:07 ` Jonathan Neuschäfer
2020-06-30 6:40 ` [RFC PATCH 00/10] Netronix embedded controller driver for Kobo and Tolino ebook readers Andreas Kemnade
2020-06-30 7:15 ` Jonathan Neuschäfer
2020-06-30 19:22 ` Andreas Kemnade [this message]
2020-06-30 20:14 ` Andreas Kemnade
2020-07-04 20:58 ` Jonathan Neuschäfer
2020-07-06 19:28 ` Andreas Kemnade
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