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From: matthias.bgg@kernel.org
To: mturquette@baylibre.com, sboyd@kernel.org,
	kevin-cw.chen@mediatek.com, mars.cheng@mediatek.com
Cc: sean.wang@mediatek.com, matthias.bgg@gmail.com,
	jasu@njomotys.info, linux-clk@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-mediatek@lists.infradead.org,
	Matthias Brugger <mbrugger@suse.com>
Subject: [PATCH v3 0/3] Mark clocks as critical for MT6797
Date: Tue,  8 Jan 2019 13:12:05 +0100
Message-ID: <20190108121208.2473-1-matthias.bgg@kernel.org> (raw)

From: Matthias Brugger <mbrugger@suse.com>

Jasper send this series some month ago. As there was no reaction from
his side, I'll do a friendly take-over.
I tested the patches on my Helios X20 boards and they fix the issue.
I didn't add a Tested-by tag as I added my Signed-off-by.

Changes since v2 (https://patchwork.kernel.org/patch/10686759/):
- axi_sel is not needed, drop CLK_IS_CRITICAL for it.
- update commit message
- add Acked-by from Mars

Changes since v1:
- add a fixes tag.

---

Currently, DRAM-related clocks and the axi_sel MUX are not marked with
CLK_IS_CRITICAL for MT6797. This causes memory corruption when the
system is booted without clk_ignore_unused.

This patchset

1. Makes it possible to mark outputs of MUXes as critical by introducing
   a new macro, MUX_FLAGS,
2. Makes it possible to mark gates as critical by adding flags to
   mtk_gate, and
3. Marks axi_sel, ddrphycfg_sel, infra_dramc_f26m and infra_dramc_b_f26m
   as critical.

The addition of flags to mtk_gate also exists in the patch series "Add
basic and clock support for Mediatek MT8183 SoC" [1].  The type of
flags is unsigned int in that series, but the real type is unsigned
long, so my patch differs from that patch.

[1] https://patchwork.kernel.org/patch/10549953/

Jasper Mattsson (3):
  clk: mediatek: Add MUX_FLAGS macro
  clk: mediatek: Add flags to mtk_gate
  clk: mediatek: Mark bus and DRAM related clocks as critical

 drivers/clk/mediatek/clk-gate.c   |  4 ++-
 drivers/clk/mediatek/clk-gate.h   |  3 +-
 drivers/clk/mediatek/clk-mt6797.c | 60 ++++++++++++++++++-------------
 drivers/clk/mediatek/clk-mtk.c    |  2 +-
 drivers/clk/mediatek/clk-mtk.h    |  9 +++--
 5 files changed, 48 insertions(+), 30 deletions(-)

-- 
2.20.1


             reply index

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-08 12:12 matthias.bgg [this message]
2019-01-08 12:12 ` [PATCH v3 1/3] clk: mediatek: Add MUX_FLAGS macro matthias.bgg
2019-01-08 12:12 ` [PATCH v3 2/3] clk: mediatek: Add flags to mtk_gate matthias.bgg
2019-01-08 12:12 ` [PATCH v3 3/3] clk: mediatek: Mark bus and DRAM related clocks as critical matthias.bgg
2019-02-08 13:39   ` Matthias Brugger
2019-02-13 17:09     ` Stephen Boyd

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