linux-kernel - Re: [PATCH v3 1/5] arm64: dts: ti: k3-j7200: Add general purpose timers

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Message-ID: <20230605045427.GV14287@atomide.com>
Date:   Mon, 5 Jun 2023 07:54:27 +0300
From:   Tony Lindgren <tony@...mide.com>
To:     Udit Kumar <u-kumar1@...com>
Cc:     nm@...com, vigneshr@...com, kristo@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, conor+dt@...nel.org,
        m-chawdhry@...com, n-francis@...com
Subject: Re: [PATCH v3 1/5] arm64: dts: ti: k3-j7200: Add general purpose
 timers

* Udit Kumar <u-kumar1@...com> [230604 04:57]:
> There are 20 general purpose timers on j721e that can be used for
> things like PWM using pwm-omap-dmtimer driver. There are also
> additional ten timers in the MCU domain which are meant for MCU
> firmware usage and hence marked reserved by default.
> 
> The odd numbered timers have the option of being cascaded to even
> timers to create a 64 bit non-atomic counter which is racy in simple
> usage, hence the clock muxes are explicitly setup to individual 32 bit
> counters driven off system crystal (HFOSC) as default.

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