Re: [PATCH] ARM: dts: Add the hdmi-ddc pinctrl settings for rk3288

From	Heiko Stübner <heiko@sntech.de>
Newsgroups	linux.kernel
Subject	Re: [PATCH] ARM: dts: Add the hdmi-ddc pinctrl settings for rk3288
Date	2015-09-13 13:40 +0200
Message-ID	<q8dNw-6ok-3@gated-at.bofh.it> (permalink)
References	<q4oeu-JH-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Am Mittwoch, 2. September 2015, 14:54:22 schrieb Douglas Anderson:
> The pins for i2c5 can either be configured as "I2C5" which means that
> they're controlled by the normal RK3288 I2C controller or as "EDP / HDMI
> I2C".  It's unclear why EDP is referenced here since apparently setting
> the mux to this position enables I2C communication using the dw_hdmi
> block with a patch like <https://patchwork.kernel.org/patch/7098101/>.
> 
> There appear to be some reasons why using the builtin I2C controller in
> dw_hdmi is better than using the normal RK3288 I2C controller, so boards
> based on rk3288 might eventually want to use this pinmux if it's known
> to work.
> 
> Once driver support in dw_hdmi lands, boards would use this by selecting
> this pinctrl for the HDMI block and then _not_ specifying a ddc-i2c-bus
> and _not_ setting the status to "okay" for i2c5 (which uses the same
> pins).
> 
> Signed-off-by: Douglas Anderson <dianders@chromium.org>

applied to my dts branch for 4.4


Thanks
Heiko
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Re: [PATCH] ARM: dts: Add the hdmi-ddc pinctrl settings for rk3288 Heiko Stübner <heiko@sntech.de> - 2015-09-13 13:40 +0200

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