linux-kernel - Re: [PATCHv4 1/6] spi: add ancillary device support

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Message-ID: <CAHp75Ve7c9ncLNfTRUdAPYxaPgMF_oGpg6kh3RnTJejAfKjKGg@mail.gmail.com>
Date:   Sun, 13 Jun 2021 17:18:17 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Sebastian Reichel <sebastian.reichel@...labora.com>
Cc:     Mark Brown <broonie@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>, Ian Ray <ian.ray@...com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-spi <linux-spi@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        Collabora Kernel ML <kernel@...labora.com>
Subject: Re: [PATCHv4 1/6] spi: add ancillary device support

On Wed, Jun 9, 2021 at 7:07 PM Sebastian Reichel
<sebastian.reichel@...labora.com> wrote:
>
> Introduce support for ancillary devices, similar to existing
> implementation for I2C. This is useful for devices having
> multiple chip-selects, for example some microcontrollers
> provide a normal SPI interface and a flashing SPI interface.

...

> @@ -1993,7 +2019,7 @@ static int of_spi_parse_dt(struct spi_controller *ctlr, struct spi_device *spi,
>         }
>
>         /* Device address */
> -       rc = of_property_read_u32(nc, "reg", &value);
> +       rc = of_property_read_u32_index(nc, "reg", 0, &value);
>         if (rc) {
>                 dev_err(&ctlr->dev, "%pOF has no valid 'reg' property (%d)\n",
>                         nc, rc);

Unrelated change.

-- 
With Best Regards,
Andy Shevchenko