From: Emil Lundmark <emil@limesaudio.com>
To: Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <kernel@pengutronix.de>,
Fabio Estevam <fabio.estevam@nxp.com>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@codeaurora.org>
Cc: linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org,
"Ken . Lin" <ken.lin@advantech.com>,
Emil Lundmark <emil@limesaudio.com>
Subject: [PATCH v3 0/2] clk: imx: fix AV PLL rate setting
Date: Wed, 12 Oct 2016 12:31:39 +0200 [thread overview]
Message-ID: <cover.1476267249.git.emil@limesaudio.com> (raw)
Hi,
I discovered a problem when trying to set the rate of the audio PLL
(pll4_post_div) on an i.MX6Q. The rate I wanted to set was 196.608 MHz, but
the actual rate I got was 192.000570 MHz. This patch series fixes this
issue and also improves the precision of the audio/video PLLs.
Changes since v2:
- Cast result of 'parent_rate * mfn / mfd' to unsigned long instead of u32.
- Clarify how this issue was discovered in the commit message.
- Rebased on Linux 4.8.
Changes since v1:
- Use correct subsystem name in commit summary.
- Use 'Fixes:' tag to indicate bug fix.
- Revise argument for choosing the denominator register value after
comments from Lothar Waßmann.
v2: http://lists.infradead.org/pipermail/linux-arm-kernel/2016-October/460809.html
v1: http://lists.infradead.org/pipermail/linux-arm-kernel/2016-October/460350.html
Emil Lundmark (2):
clk: imx: fix integer overflow in AV PLL round rate
clk: imx: improve precision of AV PLL to 1 Hz
drivers/clk/imx/clk-pllv3.c | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
--
2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: emil@limesaudio.com (Emil Lundmark)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 0/2] clk: imx: fix AV PLL rate setting
Date: Wed, 12 Oct 2016 12:31:39 +0200 [thread overview]
Message-ID: <cover.1476267249.git.emil@limesaudio.com> (raw)
Hi,
I discovered a problem when trying to set the rate of the audio PLL
(pll4_post_div) on an i.MX6Q. The rate I wanted to set was 196.608 MHz, but
the actual rate I got was 192.000570 MHz. This patch series fixes this
issue and also improves the precision of the audio/video PLLs.
Changes since v2:
- Cast result of 'parent_rate * mfn / mfd' to unsigned long instead of u32.
- Clarify how this issue was discovered in the commit message.
- Rebased on Linux 4.8.
Changes since v1:
- Use correct subsystem name in commit summary.
- Use 'Fixes:' tag to indicate bug fix.
- Revise argument for choosing the denominator register value after
comments from Lothar Wa?mann.
v2: http://lists.infradead.org/pipermail/linux-arm-kernel/2016-October/460809.html
v1: http://lists.infradead.org/pipermail/linux-arm-kernel/2016-October/460350.html
Emil Lundmark (2):
clk: imx: fix integer overflow in AV PLL round rate
clk: imx: improve precision of AV PLL to 1 Hz
drivers/clk/imx/clk-pllv3.c | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
--
2.7.4
next reply other threads:[~2016-10-12 10:31 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-12 10:31 Emil Lundmark [this message]
2016-10-12 10:31 ` [PATCH v3 0/2] clk: imx: fix AV PLL rate setting Emil Lundmark
2016-10-12 10:31 ` [PATCH v3 1/2] clk: imx: fix integer overflow in AV PLL round rate Emil Lundmark
2016-10-12 10:31 ` Emil Lundmark
2016-10-14 13:33 ` Fabio Estevam
2016-10-14 13:33 ` Fabio Estevam
2016-10-28 1:41 ` Stephen Boyd
2016-10-28 1:41 ` Stephen Boyd
2016-10-28 11:47 ` Fabio Estevam
2016-10-28 11:47 ` Fabio Estevam
2016-10-28 18:13 ` Stephen Boyd
2016-10-28 18:13 ` Stephen Boyd
2016-10-28 19:32 ` Fabio Estevam
2016-10-28 19:32 ` Fabio Estevam
2016-11-02 0:07 ` Stephen Boyd
2016-11-02 0:07 ` Stephen Boyd
2016-10-12 10:31 ` [PATCH v3 2/2] clk: imx: improve precision of AV PLL to 1 Hz Emil Lundmark
2016-10-12 10:31 ` Emil Lundmark
2016-10-14 13:34 ` Fabio Estevam
2016-10-14 13:34 ` Fabio Estevam
2016-10-28 1:41 ` Stephen Boyd
2016-10-28 1:41 ` Stephen Boyd
2016-10-24 7:34 ` [PATCH v3 0/2] clk: imx: fix AV PLL rate setting Shawn Guo
2016-10-24 7:34 ` Shawn Guo
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