linux-kernel - Re: [PATCH v3 02/12] dt-bindings: watchdog: Document Exynos850 watchdog bindings

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Date:   Mon, 8 Nov 2021 14:08:24 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To:     Sam Protsenko <semen.protsenko@...aro.org>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Rob Herring <robh+dt@...nel.org>
Cc:     linux-watchdog@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH v3 02/12] dt-bindings: watchdog: Document Exynos850
 watchdog bindings

On 07/11/2021 21:29, Sam Protsenko wrote:
> Exynos850 SoC has two CPU clusters:
>   - cluster 0: contains CPUs #0, #1, #2, #3
>   - cluster 1: contains CPUs #4, #5, #6, #7
> 
> Each cluster has its own dedicated watchdog timer. Those WDT instances
> are controlled using different bits in PMU registers, new
> "samsung,index" property is added to tell the driver which bits to use
> for defined watchdog node.
> 
> Also on Exynos850 the peripheral clock and the source clock are two
> different clocks. Provide a way to specify two clocks in watchdog device
> tree node.
> 
> Signed-off-by: Sam Protsenko <semen.protsenko@...aro.org>
> ---
> Changes in v3:
>   - Renamed "samsung,index" property to more descriptive
>     "samsung,cluster-index"
>   - Disabled "samsung,cluster-index" property for SoCs other than
>     Exynos850
> 
> Changes in v2:
>   - Stated explicitly that Exynos850 driver requires 2 clocks
>   - Used single compatible for Exynos850
>   - Added "index" property to specify CPU cluster index
>   - Fixed a typo in commit message: dedicater -> dedicated
> 
>  .../bindings/watchdog/samsung-wdt.yaml        | 45 +++++++++++++++++--
>  1 file changed, 41 insertions(+), 4 deletions(-)
> 


Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>


Best regards,
Krzysztof