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From: Nishanth Menon <nm@ti.com>
To: Gowtham Tammana <g-tammana@ti.com>
Cc: Tero Kristo <t-kristo@ti.com>,
	devicetree@vger.kernel.org, robh+dt@kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 2/2] arm64: dts: ti: k3-j7200-main: Add main domain watchdog entries
Date: Fri, 18 Dec 2020 08:07:25 -0600	[thread overview]
Message-ID: <20201218140725.6ierioowdufl52bv@unfilled> (raw)
In-Reply-To: <20201217000716.11091-3-g-tammana@ti.com>

On 18:07-20201216, Gowtham Tammana wrote:
> Add DT entries for main domain watchdog instances.

Please add a note to indicate that these are the only watchdogs that
are visible to Linux and ARMv8 systems.


You may need to repost the dts patch once you have the 
> 
> Signed-off-by: Gowtham Tammana <g-tammana@ti.com>
> ---
>  arch/arm64/boot/dts/ti/k3-j7200-main.dtsi | 18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
> index 72d6496e88dd..de430d44c2a6 100644
> --- a/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
> @@ -303,6 +303,24 @@ main_uart9: serial@2890000 {
>  		clock-names = "fclk";
>  	};
>  
> +	watchdog0: watchdog@2200000 {

If you are going to strengthen the node-names up (recommend we
do that), you might want to use a regex and lock things down.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation//devicetree/bindings/watchdog/ti,rti-wdt.yaml#n26

That is much better option that expecting people to read the example and
follow the convention.

> +		compatible = "ti,j7-rti-wdt";
> +		reg = <0x0 0x2200000 0x0 0x100>;
we try and keep 0x00 instead of 0x0 -> see other places in the dtsi
> +		clocks = <&k3_clks 252 1>;
> +		power-domains = <&k3_pds 252 TI_SCI_PD_EXCLUSIVE>;
> +		assigned-clocks = <&k3_clks 252 1>;
> +		assigned-clock-parents = <&k3_clks 252 5>;
> +	};
> +
> +	watchdog1: watchdog@2210000 {
> +		compatible = "ti,j7-rti-wdt";
> +		reg = <0x0 0x2210000 0x0 0x100>;
> +		clocks = <&k3_clks 253 1>;
> +		power-domains = <&k3_pds 253 TI_SCI_PD_EXCLUSIVE>;
> +		assigned-clocks = <&k3_clks 253 1>;
> +		assigned-clock-parents = <&k3_clks 253 5>;
> +	};
> +
>  	main_i2c0: i2c@2000000 {
>  		compatible = "ti,j721e-i2c", "ti,omap4-i2c";
>  		reg = <0x00 0x2000000 0x00 0x100>;

-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D

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  reply	other threads:[~2020-12-18 14:08 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-17  0:07 [PATCH 0/2] Add watchdog dt nodes for TI's J7200 SoC Gowtham Tammana
2020-12-17  0:07 ` [PATCH 1/2] dt-bindings: watchdog: change node name to generic Gowtham Tammana
2020-12-18 14:02   ` Nishanth Menon
2021-01-07  1:46     ` Gowtham A Tammana
2020-12-17  0:07 ` [PATCH 2/2] arm64: dts: ti: k3-j7200-main: Add main domain watchdog entries Gowtham Tammana
2020-12-18 14:07   ` Nishanth Menon [this message]
2021-01-07  1:34     ` Gowtham A Tammana

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