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Date: Tue, 1 Nov 2016 06:57:23 +0100
From: Lukasz Majewski <l.majewski@majess.pl>
To: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>,
        linux-pwm@vger.kernel.org,
        Bhuvanchandra DV <bhuvanchandra.dv@toradex.com>,
        linux-kernel@vger.kernel.org, Stefan Agner <stefan@agner.ch>,
        Thierry Reding <thierry.reding@gmail.com>, kernel@pengutronix.de,
        Fabio Estevam <fabio.estevam@nxp.com>,
        Philipp Zabel <pza@pengutronix.de>, Fabio Estevam <festevam@gmail.com>,
        Lothar Wassmann <LW@karo-electronics.de>
Subject: Re: [PATCH v2 03/10] pwm: imx: Rewrite imx_pwm_*_v1 code to
 facilitate switch to atomic pwm operation
Message-ID: <20161101065723.7751a55e@jawa>
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Hi Sascha,

> The current assumption as discussed by Philipp and me is that the ipg
> clk is only needed when the pwm output is driven by the ipg clk
> (MX3_PWMCR[16:17] =3D MX3_PWMCR_CLKSRC_IPG)

At least on my setup (i.MX6q) the ipg clock (ipg_clk) don't need to be
explicitly enabled in the ->apply() callback (in the pwm-imx.c) when
MX3_PWMCR_CLKSRC_IPG (0x01 - ipg_clk) is selected as the PWM source.


Best regards,
=C5=81ukasz Majewski

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