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From: Stephen Boyd <sboyd@kernel.org>
To: Eugen.Hristev@microchip.com, alexandre.belloni@bootlin.com,
	mturquette@baylibre.com
Cc: Nicolas.Ferre@microchip.com, linux-clk@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, Eugen.Hristev@microchip.com
Subject: Re: [PATCH] clk: at91: sam9x60: fix programmable clock prescaler
Date: Sun, 05 Jan 2020 19:07:04 -0800	[thread overview]
Message-ID: <20200106030704.D68E121582@mail.kernel.org> (raw)
In-Reply-To: <1575977088-16781-1-git-send-email-eugen.hristev@microchip.com>

Quoting Eugen.Hristev@microchip.com (2019-12-10 03:25:19)
> From: Eugen Hristev <eugen.hristev@microchip.com>
> 
> The prescaler works as parent rate divided by (PRES + 1) (is_pres_direct == 1)
> It does not work in the way of parent rate shifted to the right by (PRES + 1),
> which means division by 2^(PRES + 1) (is_pres_direct == 0)
> Thus is_pres_direct must be enabled for this SoC, to make the right computation.
> This field was added in
> commit 45b06682113b ("clk: at91: fix programmable clock for sama5d2")
> SAM9X60 has the same field as SAMA5D2 in the PCK
> 
> Fixes: 01e2113de9a5 ("clk: at91: add sam9x60 pmc driver")
> Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
> ---

Applied to clk-next


WARNING: multiple messages have this Message-ID (diff)
From: Stephen Boyd <sboyd@kernel.org>
To: Eugen.Hristev@microchip.com, alexandre.belloni@bootlin.com,
	mturquette@baylibre.com
Cc: linux-kernel@vger.kernel.org, Eugen.Hristev@microchip.com,
	linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org
Subject: Re: [PATCH] clk: at91: sam9x60: fix programmable clock prescaler
Date: Sun, 05 Jan 2020 19:07:04 -0800	[thread overview]
Message-ID: <20200106030704.D68E121582@mail.kernel.org> (raw)
In-Reply-To: <1575977088-16781-1-git-send-email-eugen.hristev@microchip.com>

Quoting Eugen.Hristev@microchip.com (2019-12-10 03:25:19)
> From: Eugen Hristev <eugen.hristev@microchip.com>
> 
> The prescaler works as parent rate divided by (PRES + 1) (is_pres_direct == 1)
> It does not work in the way of parent rate shifted to the right by (PRES + 1),
> which means division by 2^(PRES + 1) (is_pres_direct == 0)
> Thus is_pres_direct must be enabled for this SoC, to make the right computation.
> This field was added in
> commit 45b06682113b ("clk: at91: fix programmable clock for sama5d2")
> SAM9X60 has the same field as SAMA5D2 in the PCK
> 
> Fixes: 01e2113de9a5 ("clk: at91: add sam9x60 pmc driver")
> Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
> ---

Applied to clk-next


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  reply	other threads:[~2020-01-06  3:07 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-10 11:25 [PATCH] clk: at91: sam9x60: fix programmable clock prescaler Eugen.Hristev
2019-12-10 11:25 ` Eugen.Hristev
2020-01-06  3:07 ` Stephen Boyd [this message]
2020-01-06  3:07   ` Stephen Boyd

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