linux-kernel - [PATCH 0/3] ARM: OMAP3: Fix McBSP2/3 hwmod setup for sidetone

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Date:	Fri, 18 Mar 2016 12:28:46 +0200
From:	Peter Ujfalusi <peter.ujfalusi@...com>
To:	Tony Lindgren <tony@...mide.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Jarkko Nikula <jarkko.nikula@...mer.com>,
	Paul Walmsley <paul@...an.com>
CC:	Tero Kristo <t-kristo@...com>, <linux-omap@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<alsa-devel@...a-project.org>
Subject: [PATCH 0/3] ARM: OMAP3: Fix McBSP2/3 hwmod setup for sidetone

Hi,

The series addresses a long standing issue with McBSP2/3 regarding to hwmod
setup. When booting with DT a warning is printed that mcbsp2/3 is using two
hwmod.
The root of the issue is the way how the hwmod data was constructed in the first
place for OMAP3 McBSP2/3.
After re-reading the TRM it is clear that the sidetone should not have it's
own hwmod data as it is not a separate IP, it is part of the McBSP module. It
can not affect PRCM either since it's SYSCONFIG register's AUTOIDLE bit is only
sets the autoidle from the internal McBSP_iclk clock to the sidetone block of
the same McBSP.

The first two patch will remove the omap2/3_sidetone hwmod and it's use from DT.
The ASoC patch is clear the autoidle bit in McBSP sidetone as it is adviced in
the TRM.

Mark: The ASoC patch can be safely merged via ASoC tree.

Regards,
Peter
---
Peter Ujfalusi (3):
  ARM: DTS: omap3: Remove mcbsp2/3_sidetone hwmod reference for McBSP2/3
  ARM: OMAP3: hwmod data: Merge and remove the McBSP sidetone related
    data
  ASoC: omap-mcbsp: Enable/disable sidetone block auto clock gating for
    omap3

 arch/arm/boot/dts/omap3.dtsi               |   4 +-
 arch/arm/mach-omap2/omap_hwmod_3xxx_data.c | 120 ++++-------------------------
 sound/soc/omap/mcbsp.c                     |   8 ++
 3 files changed, 24 insertions(+), 108 deletions(-)

-- 
2.7.3