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From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Max Staudt <max@enpas.org>
Cc: Linux I2C <linux-i2c@vger.kernel.org>,
	Wolfram Sang <wsa+renesas@sang-engineering.com>,
	"Linux/m68k" <linux-m68k@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Subject: Re: [PATCH] i2c/busses: Add i2c-icy for I2C on m68k/Amiga
Date: Mon, 12 Aug 2019 13:07:25 +0200	[thread overview]
Message-ID: <CAMuHMdUum4Dubx8EOsSakaNfLp4-Yyzsutfkvb_+i5mqtOtkKw@mail.gmail.com> (raw)
In-Reply-To: <fe5cf25f-1804-dc45-7010-01e602b3f3e5@enpas.org>

Hi Max,

On Mon, Aug 12, 2019 at 12:43 PM Max Staudt <max@enpas.org> wrote:
> On 08/12/2019 11:37 AM, Geert Uytterhoeven wrote:
> >> +       /*
> >> +        * The 2019 a1k.org PCBs have an LTC2990 at 0x4c, so start
> >> +        * it automatically once ltc2990 is modprobed.
> >> +        *
> >> +        * in0 is the voltage of the internal 5V power supply.
> >> +        * temp1 is the temperature inside the chip.
> >> +        *
> >> +        * Configuration 0x18 enables all sensors on this PCB:
> >> +        *  # modprobe i2c-dev
> >> +        *  # i2cset 0 0x4c 1 0x18
> >
> > What's the reason for the i2cset command?
>
> It sets the sensor modes in the LTC2990 and enables the three sensors listed below. I should have clarified this.
>
> I tried to integrate this in the driver, but ltc2990 only allows reading this configuration out of a device tree. Is there a good way to fake a DT entry in the init function?

You can add platform_data support to the ltc2990 driver, and pass it
through i2c_board_info.platform_data.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

  reply	other threads:[~2019-08-12 11:07 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-11  4:32 [PATCH] i2c/busses: Add i2c-icy for I2C on m68k/Amiga Max Staudt
2019-08-11  4:40 ` Max Staudt
2019-08-12  9:37 ` Geert Uytterhoeven
2019-08-12 10:43   ` Max Staudt
2019-08-12 11:07     ` Geert Uytterhoeven [this message]
2019-08-12 11:48       ` Max Staudt
2019-08-12 22:21   ` Max Staudt
2019-08-13  6:53     ` Geert Uytterhoeven
2019-08-20  9:23 [PATCH v5 1/3] " Max
2019-08-20  9:27 ` [PATCH] " Max Staudt
2019-08-29 19:00   ` Wolfram Sang
2019-08-29 19:17     ` Max Staudt

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