Hi Sasha,

I think this patch shouldn't be added to the stable trees; it will cause the TCU clock to be managed by the clock framework and automatically gated after bootup since it has no client, causing a global system lockup. It's only really applicable to 5.3.

Thanks, -Paul

Le sam., oct. 5, 2019 at 19:56, Sasha Levin sashal@kernel.org a écrit :

This is a note to let you know that I've just added the patch titled

clk: jz4740: Add TCU clock

to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: clk-jz4740-add-tcu-clock.patch and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

commit c72b7e327a8b4d3b870f76011f674134f9ac38f6 Author: Paul Cercueil paul@crapouillou.net Date: Wed Jul 24 13:16:10 2019 -0400

clk: jz4740: Add TCU clock

[ Upstream commit 73dd11dc1a883d4c994d729dc9984f4890001157 ]

Add the missing TCU clock to the list of clocks supplied by the 

CGU for the JZ4740 SoC.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Mathieu Malaterre <malat@debian.org>
Tested-by: Artur Rojek <contact@artur-rojek.eu>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-doc@vger.kernel.org
Cc: linux-mips@vger.kernel.org
Cc: linux-clk@vger.kernel.org
Cc: od@zcrc.me
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/clk/ingenic/jz4740-cgu.c b/drivers/clk/ingenic/jz4740-cgu.c index 305a26c2a800e..01b5b8b103888 100644 --- a/drivers/clk/ingenic/jz4740-cgu.c +++ b/drivers/clk/ingenic/jz4740-cgu.c @@ -211,6 +211,12 @@ static const struct ingenic_cgu_clk_info jz4740_cgu_clocks[] = { .parents = { JZ4740_CLK_EXT, -1, -1, -1 }, .gate = { CGU_REG_CLKGR, 5 }, },

• [JZ4740_CLK_TCU] = {

• "tcu", CGU_CLK_GATE,
  

• .parents = { JZ4740_CLK_EXT, -1, -1, -1 },
  

• .gate = { CGU_REG_CLKGR, 1 },
  

• },

};

static void __init jz4740_cgu_init(struct device_node *np) diff --git a/include/dt-bindings/clock/jz4740-cgu.h b/include/dt-bindings/clock/jz4740-cgu.h index 43153d3e9bd26..ff7c27bc98e37 100644 --- a/include/dt-bindings/clock/jz4740-cgu.h +++ b/include/dt-bindings/clock/jz4740-cgu.h @@ -33,5 +33,6 @@ #define JZ4740_CLK_ADC 19 #define JZ4740_CLK_I2C 20 #define JZ4740_CLK_AIC 21 +#define JZ4740_CLK_TCU 22

#endif /* __DT_BINDINGS_CLOCK_JZ4740_CGU_H__ */