Date: Fri, 25 Sep 2020 07:40:26 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r366140 - head/sys/arm/allwinner Message-ID: <202009250740.08P7eQoB096881@repo.freebsd.org>
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Author: avg Date: Fri Sep 25 07:40:26 2020 New Revision: 366140 URL: https://svnweb.freebsd.org/changeset/base/366140 Log: aw_pwm: fix programming of the period The programmed value is biased by one: 0 means 1 cycle, 1 means 2 cycles, etc. MFC after: 3 weeks Modified: head/sys/arm/allwinner/aw_pwm.c Modified: head/sys/arm/allwinner/aw_pwm.c ============================================================================== --- head/sys/arm/allwinner/aw_pwm.c Fri Sep 25 07:40:02 2020 (r366139) +++ head/sys/arm/allwinner/aw_pwm.c Fri Sep 25 07:40:26 2020 (r366140) @@ -293,7 +293,7 @@ aw_pwm_channel_config(device_t dev, u_int channel, u_i AW_PWM_WRITE(sc, AW_PWM_CTRL, reg); /* Write the total/active cycles */ - reg = ((clk_rate / period_freq) << AW_PWM_PERIOD_TOTAL_SHIFT) | + reg = ((clk_rate / period_freq - 1) << AW_PWM_PERIOD_TOTAL_SHIFT) | ((clk_rate / duty_freq) << AW_PWM_PERIOD_ACTIVE_SHIFT); AW_PWM_WRITE(sc, AW_PWM_PERIOD, reg);
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