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Date:   Wed, 13 Jan 2021 23:46:45 +0100
From:   Andreas Kemnade <andreas@kemnade.info>
To:     Jonathan =?UTF-8?B?TmV1c2Now6RmZXI=?= <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 =?UTF-8?B?S2xlaW5lLUvDtm5pZw==?= 
        <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>,
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        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>,
        Arnd Bergmann <arnd@arndb.de>, Daniel Palmer <daniel@0x0f.com>,
        Andy Shevchenko <andy.shevchenko@gmail.com>
Subject: Re: [PATCH v7 4/7] pwm: ntxec: Add driver for PWM function in
 Netronix EC
Message-ID: <20210113234645.52fcf73c@aktux>
In-Reply-To: <20210112203902.4e196d11@aktux>
References: <20210109180220.121511-1-j.neuschaefer@gmx.net>
        <20210109180220.121511-5-j.neuschaefer@gmx.net>
        <20210112203902.4e196d11@aktux>
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On Tue, 12 Jan 2021 20:39:02 +0100
Andreas Kemnade <andreas@kemnade.info> wrote:

[...]
> > +static int ntxec_pwm_probe(struct platform_device *pdev)
> > +{
> > +	struct ntxec *ec = dev_get_drvdata(pdev->dev.parent);
> > +	struct ntxec_pwm *priv;
> > +	struct pwm_chip *chip;
> > +
> > +	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
> > +	if (!priv)
> > +		return -ENOMEM;
> > +
> > +	priv->ec = ec;
> > +	priv->dev = &pdev->dev;
> > +
> > +	platform_set_drvdata(pdev, priv);
> > +
> > +	chip = &priv->chip;
> > +	chip->dev = &pdev->dev;  
> 
> Hmm, I needed
> chip->dev = &pdev->dev.parent to use the backlight example
> in patch 2/7.
> Not sure what the correct solution is. Maybe the pwm deserves its own
> devicetree node.
> 
probably just assigning the node from the parent.

   pdev->dev.of_node = pdev->dev.parent->of_node;

Regards,
Andreas