From: Jerome Brunet <jbrunet@baylibre.com>
To: Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
linux-amlogic@lists.infradead.org, linux-clk@vger.kernel.org
Cc: sboyd@kernel.org, mturquette@baylibre.com,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, narmstrong@baylibre.com
Subject: Re: [PATCH v2 0/4] clk: meson8b: updates for video clocks / resets
Date: Wed, 29 Apr 2020 13:44:51 +0200 [thread overview]
Message-ID: <1jr1w6iki4.fsf@starbuckisacylon.baylibre.com> (raw)
In-Reply-To: <20200417184127.1319871-1-martin.blumenstingl@googlemail.com>
On Fri 17 Apr 2020 at 20:41, Martin Blumenstingl <martin.blumenstingl@googlemail.com> wrote:
> This is the first batch of fixes and updates for the Meson8/8b/8m2
> clock controller driver.
>
> The first patch fixes the video clock hierarchy. Special thanks to
> Neil for providing a lot of details about the video clock tree!
>
> The second and third came up while testing video output on my EC-100
> (Endless Mini). This board is special because u-boot does not enable
> the video outputs like most other u-boot versions do. However, this
> is very useful for development because it shows (the hard way ;))
> where the existing code is buggy.
>
> The last patch is a small improvement for the VPU clock so we
> utilize the glitch-free mux (on SoCs which support it) and avoid
> problems by changing the "live" clock tree at runtime (with the mali
> clock this resulted in system hangs/freezes).
>
> In my opinion all of these patches - including the fixes - can go to
> "next" because the relevant clock trees are still read-only.
>
>
> Changes since v1 at [0]:
> - updated the description in patch #1 to clarify that (it seems that)
> there is no fixed pre-multiplier for the HDMI PLL (like on GXL for
> example). Spotted by Jerome - thanks!
> - simplified the logic for the active_low resets in patch #2 by
> shortening the if ... else. Thanks to Jerome for the suggestion.
>
>
> [0] https://patchwork.kernel.org/cover/11489079/
>
>
> Martin Blumenstingl (4):
> clk: meson: meson8b: Fix the first parent of vid_pll_in_sel
> clk: meson: meson8b: Fix the polarity of the RESET_N lines
> clk: meson: meson8b: Fix the vclk_div{1,2,4,6,12}_en gate bits
> clk: meson: meson8b: Make the CCF use the glitch-free VPU mux
Applied, Thx
>
> drivers/clk/meson/meson8b.c | 105 +++++++++++++++++++++++++-----------
> 1 file changed, 73 insertions(+), 32 deletions(-)
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prev parent reply other threads:[~2020-04-29 11:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-17 18:41 [PATCH v2 0/4] clk: meson8b: updates for video clocks / resets Martin Blumenstingl
2020-04-17 18:41 ` [PATCH v2 1/4] clk: meson: meson8b: Fix the first parent of vid_pll_in_sel Martin Blumenstingl
2020-04-17 18:41 ` [PATCH v2 2/4] clk: meson: meson8b: Fix the polarity of the RESET_N lines Martin Blumenstingl
2020-04-17 18:41 ` [PATCH v2 3/4] clk: meson: meson8b: Fix the vclk_div{1, 2, 4, 6, 12}_en gate bits Martin Blumenstingl
2020-04-17 18:41 ` [PATCH v2 4/4] clk: meson: meson8b: Make the CCF use the glitch-free VPU mux Martin Blumenstingl
2020-04-29 11:44 ` Jerome Brunet [this message]
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