linux-kernel - Re: [PATCH v3 09/14] regulator: mt6370: Add mt6370 DisplayBias and VibLDO support

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Message-ID: <CABtFH5+YLpYdWNsy1DwkKf19L6THo5NYvQ8e3rpo9wkTS9HxwQ@mail.gmail.com>
Date:   Fri, 24 Jun 2022 18:32:49 +0800
From:   ChiaEn Wu <peterwu.pub@...il.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Lee Jones <lee.jones@...aro.org>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>, Pavel Machek <pavel@....cz>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Sebastian Reichel <sre@...nel.org>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Guenter Roeck <linux@...ck-us.net>,
        "Krogerus, Heikki" <heikki.krogerus@...ux.intel.com>,
        Helge Deller <deller@....de>,
        ChiaEn Wu <chiaen_wu@...htek.com>,
        Alice Chen <alice_chen@...htek.com>,
        cy_huang <cy_huang@...htek.com>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        Linux LED Subsystem <linux-leds@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        USB <linux-usb@...r.kernel.org>,
        linux-iio <linux-iio@...r.kernel.org>,
        "open list:FRAMEBUFFER LAYER" <linux-fbdev@...r.kernel.org>,
        szuni chen <szunichen@...il.com>
Subject: Re: [PATCH v3 09/14] regulator: mt6370: Add mt6370 DisplayBias and
 VibLDO support

Hi Andy,

Thanks for your helpful comments!

Andy Shevchenko <andy.shevchenko@...il.com> 於 2022年6月24日 週五 凌晨2:19寫道：
>
> On Thu, Jun 23, 2022 at 2:00 PM ChiaEn Wu <peterwu.pub@...il.com> wrote:
> >
> > From: ChiYuan Huang <cy_huang@...htek.com>
> >
> > Add mt6370 DisplayBias and VibLDO support.
>
> ...
>
> > +#include <linux/bits.h>
> > +#include <linux/gpio/consumer.h>
> > +#include <linux/interrupt.h>
> > +#include <linux/kernel.h>
> > +#include <linux/module.h>
>
> > +#include <linux/of.h>
>
> Any users of this? (See below)
>
> > +#include <linux/platform_device.h>
> > +#include <linux/regmap.h>
> > +#include <linux/regulator/driver.h>
> > +#include <linux/regulator/machine.h>
>
> ...
>
> > +#define MT6370_LDO_MINUV       1600000
> > +#define MT6370_LDO_STPUV       200000
> > +#define MT6370_LDO_N_VOLT      13
> > +#define MT6370_DBVBOOST_MINUV  4000000
> > +#define MT6370_DBVBOOST_STPUV  50000
> > +#define MT6370_DBVBOOST_N_VOLT 45
> > +#define MT6370_DBVOUT_MINUV    4000000
> > +#define MT6370_DBVOUT_STPUV    50000
> > +#define MT6370_DBVOUT_N_VOLT   41
>
> If UV is a unit suffix, make it _UV.
>
> ...
>
> > +               .of_match = of_match_ptr("dsvbst"),
>
> Would it even be called / used if CONFIG_OF=n?

We got a notification from Mark telling us that this patch has been
applied to git.
( https://lore.kernel.org/linux-arm-kernel/165599931844.321775.8085559092337130067.b4-ty@kernel.org/
)
So, should we need to make any other changes in the next submission?

>
> ...
>
> > +               .regulators_node = of_match_ptr("regulators"),
>
> Ditto.
>
> ...
>
> > +       for (i = 0; i < ARRAY_SIZE(mt6370_irqs); i++) {
> > +               irq = platform_get_irq_byname(pdev, mt6370_irqs[i].name);
> > +
> > +               rdev = priv->rdev[mt6370_irqs[i].rid];
> > +
> > +               ret = devm_request_threaded_irq(priv->dev, irq, NULL,
> > +                                               mt6370_irqs[i].handler, 0,
> > +                                               mt6370_irqs[i].name, rdev);
> > +               if (ret) {
>
> > +                       dev_err(priv->dev,
> > +                               "Failed to register (%d) interrupt\n", i);
> > +                       return ret;
>
> return dev_err_probe(...); ?
>
> > +               }
> > +       }
>
> ...
>
> > +       for (i = 0; i < MT6370_MAX_IDX; i++) {
> > +               rdev = devm_regulator_register(priv->dev,
> > +                                              mt6370_regulator_descs + i,
> > +                                              &cfg);
> > +               if (IS_ERR(rdev)) {
>
> > +                       dev_err(priv->dev,
> > +                               "Failed to register (%d) regulator\n", i);
> > +                       return PTR_ERR(rdev);
>
> return dev_err_probe(...); ?
>
> > +               }
> > +
> > +               priv->rdev[i] = rdev;
> > +       }
>
> ...
>
> > +       if (!priv->regmap) {
> > +               dev_err(&pdev->dev, "Failed to init regmap\n");
> > +               return -ENODEV;
> > +       }
>
> return dev_err_probe(...);
>
> --
> With Best Regards,
> Andy Shevchenko

Best regards,
ChiaEn Wu