From: Rob Herring <robh@kernel.org>
To: Wolfram Sang <wsa@the-dreams.de>
Cc: linux-i2c@vger.kernel.org, linux-sh@vger.kernel.org,
Magnus Damm <magnus.damm@gmail.com>,
Simon Horman <horms@verge.net.au>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>,
linux-rockchip@lists.infradead.org,
Mika Westerberg <mika.westerberg@linux.intel.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Jarkko Nikula <jarkko.nikula@linux.intel.com>,
devicetree@vger.kernel.org
Subject: Re: [PATCH 1/9] i2c: document generic DT bindings for timing parameters
Date: Thu, 3 Dec 2015 14:39:08 -0600 [thread overview]
Message-ID: <20151203203908.GA29831@rob-hp-laptop> (raw)
In-Reply-To: <1449157899-6572-2-git-send-email-wsa@the-dreams.de>
On Thu, Dec 03, 2015 at 04:51:31PM +0100, Wolfram Sang wrote:
> From: Wolfram Sang <wsa+renesas@sang-engineering.com>
>
> Also, sort the properties alphabetically and make indentation
> consistent. Wording largely taken from i2c-rk3x.txt, thanks guys!
>
> Only "i2c-scl-internal-delay-ns" is new, the rest is used by two drivers
> already and was documented in their driver binding documentation.
>
> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
> Cc: devicetree@vger.kernel.org
Acked-by: Rob Herring <robh@kernel.org>
> ---
> Documentation/devicetree/bindings/i2c/i2c.txt | 31 ++++++++++++++++++++++-----
> 1 file changed, 26 insertions(+), 5 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt b/Documentation/devicetree/bindings/i2c/i2c.txt
> index 8a99150ac3a7fd..a00219f5ee0733 100644
> --- a/Documentation/devicetree/bindings/i2c/i2c.txt
> +++ b/Documentation/devicetree/bindings/i2c/i2c.txt
> @@ -29,12 +29,33 @@ Optional properties
> These properties may not be supported by all drivers. However, if a driver
> wants to support one of the below features, it should adapt the bindings below.
>
> -- clock-frequency - frequency of bus clock in Hz.
> -- wakeup-source - device can be used as a wakeup source.
> +- clock-frequency
> + frequency of bus clock in Hz.
>
> -- interrupts - interrupts used by the device.
> -- interrupt-names - "irq" and "wakeup" names are recognized by I2C core,
> - other names are left to individual drivers.
> +- i2c-scl-falling-time-ns
> + Number of nanoseconds the SCL signal takes to fall; t(f) in the I2C
> + specification.
> +
> +- i2c-scl-internal-delay-ns
> + Number of nanoseconds the IP core additionally needs to setup SCL.
> +
> +- i2c-scl-rising-time-ns
> + Number of nanoseconds the SCL signal takes to rise; t(r) in the I2C
> + specification.
> +
> +- i2c-sda-falling-time-ns
> + Number of nanoseconds the SDA signal takes to fall; t(f) in the I2C
> + specification.
> +
> +- interrupts
> + interrupts used by the device.
> +
> +- interrupt-names
> + "irq" and "wakeup" names are recognized by I2C core, other names are
> + left to individual drivers.
> +
> +- wakeup-source
> + device can be used as a wakeup source.
>
> Binding may contain optional "interrupts" property, describing interrupts
> used by the device. I2C core will assign "irq" interrupt (or the very first
> --
> 2.1.4
>
> --
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next prev parent reply other threads:[~2015-12-03 20:39 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-03 15:51 [PATCH 0/9] i2c: add generic support for timing parameters in DT Wolfram Sang
[not found] ` <1449157899-6572-1-git-send-email-wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org>
2015-12-03 15:51 ` [PATCH 1/9] i2c: document generic DT bindings for timing parameters Wolfram Sang
2015-12-03 20:39 ` Rob Herring [this message]
2015-12-03 15:51 ` [PATCH 2/9] i2c: add generic routine to parse DT for timing information Wolfram Sang
2015-12-04 8:34 ` Mika Westerberg
2015-12-04 8:41 ` Wolfram Sang
2015-12-03 15:51 ` [PATCH 3/9] i2c: rcar: refactor probe function a little Wolfram Sang
2015-12-03 15:51 ` [PATCH 4/9] i2c: rcar: switch to i2c generic dt parsing Wolfram Sang
2015-12-03 15:51 ` [PATCH 5/9] i2c: rcar: honor additional i2c timings from DT Wolfram Sang
2015-12-03 15:51 ` [PATCH 6/9] ARM: shmobile: r8a7790: dtsi: add internal delay for i2c IPs Wolfram Sang
2015-12-03 15:51 ` [PATCH 7/9] ARM: shmobile: r8a7791: " Wolfram Sang
2015-12-03 15:51 ` [PATCH 8/9] ARM: shmobile: r8a7794: " Wolfram Sang
2015-12-03 15:51 ` [PATCH 9/9] arm64: renesas: r8a7795: " Wolfram Sang
2015-12-07 6:39 ` [PATCH 0/9] i2c: add generic support for timing parameters in DT Simon Horman
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