From: Tony Lindgren <tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
To: Nishanth Menon <nm-l0cyMroinI0@public.gmane.org>
Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH] pinctrl: dra: dt-bindings: Add virtual mode configuration option
Date: Tue, 14 Jul 2015 04:10:10 -0700 [thread overview]
Message-ID: <20150714111009.GS17550@atomide.com> (raw)
In-Reply-To: <1434986546-2211-1-git-send-email-nm-l0cyMroinI0@public.gmane.org>
* Nishanth Menon <nm-l0cyMroinI0@public.gmane.org> [150622 08:24]:
> In addition to the regular mux configuration such as mux mode 1,
> 2 etc, certain pins of DRA7 require to have "virtual mode" also
> programmed. This allows for predefined delay characteristics to
> be used by the SoC to meet timing characterstics needed for the
> interface.
>
> Provide easy to use macro to do the same.
>
> It is important to note that the official TI guidelines recommend
> to do as minimal pin reconfiguration beyond the bootloader given
> the design of the hardware involved which can result in substantial
> glitches which may impair functionality of certain peripherals.
Applying into omap-for-v4.3/dt thanks.
Tony
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WARNING: multiple messages have this Message-ID (diff)
From: tony@atomide.com (Tony Lindgren)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] pinctrl: dra: dt-bindings: Add virtual mode configuration option
Date: Tue, 14 Jul 2015 04:10:10 -0700 [thread overview]
Message-ID: <20150714111009.GS17550@atomide.com> (raw)
In-Reply-To: <1434986546-2211-1-git-send-email-nm@ti.com>
* Nishanth Menon <nm@ti.com> [150622 08:24]:
> In addition to the regular mux configuration such as mux mode 1,
> 2 etc, certain pins of DRA7 require to have "virtual mode" also
> programmed. This allows for predefined delay characteristics to
> be used by the SoC to meet timing characterstics needed for the
> interface.
>
> Provide easy to use macro to do the same.
>
> It is important to note that the official TI guidelines recommend
> to do as minimal pin reconfiguration beyond the bootloader given
> the design of the hardware involved which can result in substantial
> glitches which may impair functionality of certain peripherals.
Applying into omap-for-v4.3/dt thanks.
Tony
WARNING: multiple messages have this Message-ID (diff)
From: Tony Lindgren <tony@atomide.com>
To: Nishanth Menon <nm@ti.com>
Cc: linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org,
devicetree@vger.kernel.org
Subject: Re: [PATCH] pinctrl: dra: dt-bindings: Add virtual mode configuration option
Date: Tue, 14 Jul 2015 04:10:10 -0700 [thread overview]
Message-ID: <20150714111009.GS17550@atomide.com> (raw)
In-Reply-To: <1434986546-2211-1-git-send-email-nm@ti.com>
* Nishanth Menon <nm@ti.com> [150622 08:24]:
> In addition to the regular mux configuration such as mux mode 1,
> 2 etc, certain pins of DRA7 require to have "virtual mode" also
> programmed. This allows for predefined delay characteristics to
> be used by the SoC to meet timing characterstics needed for the
> interface.
>
> Provide easy to use macro to do the same.
>
> It is important to note that the official TI guidelines recommend
> to do as minimal pin reconfiguration beyond the bootloader given
> the design of the hardware involved which can result in substantial
> glitches which may impair functionality of certain peripherals.
Applying into omap-for-v4.3/dt thanks.
Tony
next prev parent reply other threads:[~2015-07-14 11:10 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-22 15:22 [PATCH] pinctrl: dra: dt-bindings: Add virtual mode configuration option Nishanth Menon
2015-06-22 15:22 ` Nishanth Menon
2015-06-22 15:22 ` Nishanth Menon
[not found] ` <1434986546-2211-1-git-send-email-nm-l0cyMroinI0@public.gmane.org>
2015-07-14 11:10 ` Tony Lindgren [this message]
2015-07-14 11:10 ` Tony Lindgren
2015-07-14 11:10 ` Tony Lindgren
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