linux-kernel - Re: [PATCH v2 5/6] pwm: omap-dmtimer: Do not disable pwm before changing period/duty

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Message-ID: <20200306181720.GK37466@atomide.com>
Date:   Fri, 6 Mar 2020 10:17:20 -0800
From:   Tony Lindgren <tony@...mide.com>
To:     Lokesh Vutla <lokeshvutla@...com>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        Linux OMAP Mailing List <linux-omap@...r.kernel.org>,
        linux-kernel@...r.kernel.org, linux-pwm@...r.kernel.org,
        Sekhar Nori <nsekhar@...com>, Vignesh R <vigneshr@...com>
Subject: Re: [PATCH v2 5/6] pwm: omap-dmtimer: Do not disable pwm before
 changing period/duty_cycle

* Lokesh Vutla <lokeshvutla@...com> [200228 09:58]:
> Only the Timer control register(TCLR) cannot be updated when the timer
> is running. Registers like Counter register(TCRR), loader register(TLDR),
> match register(TMAR) can be updated when the counter is running. Since
> TCLR is not updated in pwm_omap_dmtimer_config(), do not stop the
> timer for period/duty_cycle update.

Still works for me with "pwm: omap-dmtimer: Fix pwm disabling sequence"
patch left out:

Tested-by: Tony Lindgren <tony@...mide.com>