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Thu, 8 Jan 2026 00:40:38 -0600 Received: from [172.24.233.104] (a0507176-hp-z2-tower-g9-workstation-desktop-pc.dhcp.ti.com [172.24.233.104]) by lelvem-mr06.itg.ti.com (8.18.1/8.18.1) with ESMTP id 6086eZ5I1923924; Thu, 8 Jan 2026 00:40:36 -0600 Message-ID: <60da27d5-5d85-4fbe-9b18-b7e74f9ab893@ti.com> Date: Thu, 8 Jan 2026 12:10:35 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] pwm: tiehrpwm: Enable EHRPWM controller before setting configuration To: "Rafael V. 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Volkmer wrote: > Hi Uwe, Gokul, > > Thanks for CC'ing me on this thread. > > On 07/01/26 15:21, Uwe Kleine-König wrote: >> Hello, >> >> adding Rafael to Cc: who sent a patch series for this driver that I >> didn't come around to review yet. Given that neither he nor me noticed >> the problem addressed in this patch I wonder if it applies to all >> hardware variants. >> > > I also didn't observe the issue described here in my testing: duty cycle and > period changes always appeared to take effect as expected. > > My tests were done on an AM623 EVM. > > One possible explanation is that my test flow mostly exercised configuration > while the PWM was already enabled/active, which could mask the effect of a > put_sync/reset happening after configuration. > Yes, this is the reason why the configuration was taking effect for you , Rafael, as the PWM was already enabled when setting the configuration hence masking the effect of a put_sync/reset happening after configuration. Best Regards Gokul Praveen > Regarding my pending patch series for this driver: it should not > conflict this change, as it's largely preparatory refactoring for a > follow-up series. > > Best regards, > Rafael V. Volkmer