From: "Roman Beranek" <me@crly.cz>
To: "Frank Oltmanns" <frank@oltmanns.dev>,
"Maxime Ripard" <mripard@kernel.org>,
"Jernej Skrabec" <jernej.skrabec@gmail.com>
Cc: "Chen-Yu Tsai" <wens@csie.org>,
"David Airlie" <airlied@gmail.com>,
"Daniel Vetter" <daniel@ffwll.ch>,
"Samuel Holland" <samuel@sholland.org>,
"Ondrej Jirman" <megi@xff.cz>, <dri-devel@lists.freedesktop.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-sunxi@lists.linux.dev>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 0/7] drm: sun4i: set proper TCON0 DCLK rate in DSI mode
Date: Wed, 03 May 2023 16:22:32 +0200 [thread overview]
Message-ID: <CSCPKPC8OB80.1TTBCM3YDVJQ5@void.crly.cz> (raw)
In-Reply-To: <87mt2o9njh.fsf@oltmanns.dev>
Hello everyone,
I apologize for my absence from the discussion during past week, I got
hit with tonsillitis.
On Mon May 1, 2023 at 3:40 PM CEST, Frank Oltmanns wrote:
> Looking at ccu_nkm_determine_rate(), we've found our culprit because it
> does not try parent clock rates other than the current one. The same
> applies to all other ccu_nkm_* functions.
Yes, that's why I dropped CLK_SET_RATE_PARENT from pll-mipi in v3.
> b. Add functionality to ccu_nkm_* to also update the parent clock rate.
>
> I'm actually interested in tackling b, but I can't make any promises as
> to if and when I'll be able to solve it. I'm not certain about any side
> effects this might have.
It sounds like an interesting exercise. But what if HDMI is then added
to the mix?
Best regards
Roman
next prev parent reply other threads:[~2023-05-03 14:35 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-18 7:40 [PATCH v2 0/7] drm: sun4i: set proper TCON0 DCLK rate in DSI mode Roman Beranek
2023-04-18 7:40 ` [PATCH v2 1/7] clk: sunxi-ng: a64: propagate rate change from pll-mipi Roman Beranek
2023-04-25 16:09 ` Maxime Ripard
2023-04-18 7:40 ` [PATCH v2 2/7] clk: sunxi-ng: a64: export PLL_MIPI Roman Beranek
2023-04-18 7:40 ` [PATCH v2 3/7] clk: sunxi-ng: a64: prevent CLK_TCON0 being reparented Roman Beranek
2023-04-18 7:40 ` [PATCH v2 4/7] arm64: dts: allwinner: a64: assign PLL_MIPI to CLK_TCON0 Roman Beranek
2023-04-25 16:10 ` Maxime Ripard
2023-04-18 7:40 ` [PATCH v2 5/7] ARM: dts: sunxi: rename tcon's clock output Roman Beranek
2023-04-18 7:40 ` [PATCH v2 6/7] drm: sun4i: rename sun4i_dotclock to sun4i_tcon_dclk Roman Beranek
2023-04-18 7:40 ` [PATCH v2 7/7] drm: sun4i: calculate proper DCLK rate for DSI Roman Beranek
2023-04-23 13:24 ` [PATCH v2 0/7] drm: sun4i: set proper TCON0 DCLK rate in DSI mode Frank Oltmanns
2023-05-01 13:40 ` Frank Oltmanns
2023-05-03 14:22 ` Roman Beranek [this message]
2023-05-08 6:54 ` Frank Oltmanns
2023-05-08 14:08 ` Frank Oltmanns
2023-05-10 18:41 ` Jernej Škrabec
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