From: Maxime Ripard <maxime.ripard@free-electrons.com>
To: Chen-Yu Tsai <wens@csie.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
devicetree <devicetree@vger.kernel.org>,
Mike Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@codeaurora.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
dri-devel <dri-devel@lists.freedesktop.org>,
linux-sunxi <linux-sunxi@googlegroups.com>,
Rob Herring <robh+dt@kernel.org>,
Daniel Vetter <daniel.vetter@intel.com>,
linux-clk <linux-clk@vger.kernel.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>
Subject: Re: [linux-sunxi] Re: [PATCH 10/15] drm/sun4i: tcon: Switch mux on only for composite
Date: Thu, 9 Mar 2017 15:55:39 +0100 [thread overview]
Message-ID: <20170309145539.43eequth2ej7wvqk@lukather> (raw)
In-Reply-To: <CAGb2v67XkaC2+AxubaUF9nPcoGZcAzny7LKVD6C+-9BM5Fi+9g@mail.gmail.com>
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On Thu, Mar 09, 2017 at 07:31:27PM +0800, Chen-Yu Tsai wrote:
> >> Additionally, the mux registers are only valid in the first TCON, meaning
> >> it must available be active in 2 pipeline chips. It's also why we'd pass
> >> "struct drm_device *" instead of "struct sun4i_tcon *".
> >
> > Hmmmm. That's going to be tricky to support. Has this been confirmed
> > somehow? Is the register used for something else on TCON1?
>
> At this point, the only reference is Allwinner's kernel, and the old 3.4
> kernel for A10/A20. I could try getting HDMI working on the A31 to get
> some real results.
>
> FWIW, the registers do not seem to be aliased across the two TCONs.
Then maybe we don't need to care, and we can just always write to the
mux?
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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next prev parent reply other threads:[~2017-03-09 14:55 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-07 8:56 [PATCH 0/15] drm: sun4i: Add support for the HDMI controller Maxime Ripard
2017-03-07 8:56 ` [PATCH 7/15] dt-bindings: display: sun4i: Add allwinner, tcon-channel property Maxime Ripard
[not found] ` <46fdec2d680d539652f87d79c627973b3a568438.1488876832.git-series.maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2017-03-08 3:38 ` [PATCH 7/15] dt-bindings: display: sun4i: Add allwinner,tcon-channel property Chen-Yu Tsai
2017-03-15 17:37 ` Rob Herring
2017-03-17 3:34 ` Chen-Yu Tsai
[not found] ` <CAGb2v67A2T4KeLBttAGLKoo7igBTnQH+5yxN-jJo1k7Ewfd9mQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-03-26 21:11 ` Maxime Ripard
[not found] ` <cover.bc06ffa88f847ddd9ddd7c259415d5f61b55307b.1488876832.git-series.maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2017-03-07 8:56 ` [PATCH 1/15] clk: divider: Make divider_round_rate take the parent clock Maxime Ripard
2017-03-07 14:11 ` Stephen Boyd
[not found] ` <20170307141157.GC10239-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2017-03-09 10:55 ` Maxime Ripard
2017-03-07 8:56 ` [PATCH 2/15] clk: sunxi-ng: Pass the parent and a pointer to the clocks round rate Maxime Ripard
2017-03-07 8:56 ` [PATCH 3/15] clk: sunxi-ng: div: Switch to divider_round_rate Maxime Ripard
2017-03-07 8:56 ` [PATCH 4/15] clk: sunxi-ng: mux: Don't just rely on the parent for CLK_SET_RATE_PARENT Maxime Ripard
2017-03-07 8:56 ` [PATCH 5/15] clk: sunxi-ng: sun5i: Export video PLLs Maxime Ripard
[not found] ` <4bb77a9793d4ba25bf633eff6abe41910bb7fc3c.1488876832.git-series.maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2017-03-07 10:21 ` Julian Calaby
2017-03-08 8:58 ` [linux-sunxi] " Maxime Ripard
2017-03-07 8:56 ` [PATCH 6/15] dt-bindings: display: sun4i: Add HDMI display bindings Maxime Ripard
[not found] ` <f1d46b79f933df724a6750d557ebe9517b6339b5.1488876832.git-series.maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2017-03-08 3:39 ` Chen-Yu Tsai
2017-03-15 17:26 ` Rob Herring
2017-04-03 20:59 ` Maxime Ripard
2017-05-03 3:27 ` Chen-Yu Tsai
2017-03-07 8:56 ` [PATCH 8/15] drm/sun4i: tcon: Add channel debug Maxime Ripard
[not found] ` <71ebb24fd6b0efc1af7de732aa4aac9d5a2ee4f1.1488876832.git-series.maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2017-03-08 3:37 ` Chen-Yu Tsai
2017-03-07 8:56 ` [PATCH 9/15] drm/sun4i: tcon: Pass the encoder to the mode set functions Maxime Ripard
2017-03-07 8:56 ` [PATCH 10/15] drm/sun4i: tcon: Switch mux on only for composite Maxime Ripard
[not found] ` <3f70bcfe2ec03188c06d54a262d49ad91963a510.1488876832.git-series.maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2017-03-08 3:51 ` Chen-Yu Tsai
2017-03-08 4:16 ` Stefan Monnier
2017-03-09 10:58 ` Maxime Ripard
2017-03-09 11:31 ` Chen-Yu Tsai
2017-03-09 14:55 ` Maxime Ripard [this message]
2017-03-07 8:56 ` [PATCH 11/15] drm/sun4i: tcon: Fix tcon channel 1 backporch calculation Maxime Ripard
[not found] ` <475aeed1da40d46d8e50420c281a74c32b78c730.1488876832.git-series.maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2017-03-08 4:25 ` Chen-Yu Tsai
[not found] ` <CAGb2v64gJ13DB3UxfG7DnJCzE+CZ02repkX8=iOQASsHw2cG5A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-03-08 8:55 ` Maxime Ripard
2017-03-07 8:56 ` [PATCH 12/15] drm/sun4i: tcon: multiply the vtotal when not in interlace Maxime Ripard
[not found] ` <0b3b516527c42e745ed8a35736948a383411bd50.1488876832.git-series.maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2017-03-07 10:05 ` Chen-Yu Tsai
[not found] ` <CAGb2v67t7O4AuSXUupB3EU7OZdxgQbeyB6qL_g3x_BXOFLg9Bg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-03-09 10:54 ` Maxime Ripard
2017-03-07 8:56 ` [PATCH 13/15] drm/sun4i: Add HDMI support Maxime Ripard
[not found] ` <c63d01aedeccc58bf8d6f5bfd66d8595156e9491.1488876832.git-series.maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2017-04-21 15:17 ` Chen-Yu Tsai
2017-04-26 6:50 ` [linux-sunxi] " Maxime Ripard
2017-04-26 7:59 ` Chen-Yu Tsai
[not found] ` <CAGb2v67Szt9Xj+hwJD6i9X0XgXOtZBS1Jy4wWjbfSGJSDFM1NQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-05-03 8:41 ` Maxime Ripard
2017-03-07 8:56 ` [PATCH 14/15] ARM: sun5i: a10s: Add the HDMI controller node Maxime Ripard
[not found] ` <61406c0ba992f2fa5b5180b790a1ef3fa38d9567.1488876832.git-series.maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2017-03-08 3:35 ` Chen-Yu Tsai
[not found] ` <CAGb2v64KKp0cYB3u0=bSVcq0gB41LkurCeiTJ3OEzn7UjdSPpQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-03-09 10:59 ` Maxime Ripard
2017-03-09 11:10 ` Chen-Yu Tsai
2017-03-07 8:56 ` [PATCH 15/15] ARM: sun5i: a10s-olinuxino: Enable HDMI Maxime Ripard
[not found] ` <3194cb69fa565ded062ea950d5bf72fd7886e3f8.1488876832.git-series.maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2017-03-08 3:36 ` Chen-Yu Tsai
2017-03-07 14:06 ` [PATCH 0/15] drm: sun4i: Add support for the HDMI controller Stefan Monnier
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