linux-kernel - Re: [PATCH v3 1/4] arm: dts: nxp: lpc: lpc32xx: drop 'clocks' form rtc

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Date: Mon, 3 Jun 2024 12:24:43 +0200
From: Javier Carrasco <javier.carrasco.cruz@...il.com>
To: Alexandre Belloni <alexandre.belloni@...tlin.com>,
 Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>, Jiaxun Yang <jiaxun.yang@...goat.com>,
 Vladimir Zapolskiy <vz@...ia.com>, Joel Stanley <joel@....id.au>,
 Andrew Jeffery <andrew@...econstruct.com.au>,
 Maxime Coquelin <mcoquelin.stm32@...il.com>,
 Alexandre Torgue <alexandre.torgue@...s.st.com>
Cc: linux-rtc@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-aspeed@...ts.ozlabs.org, linux-stm32@...md-mailman.stormreply.com,
 Javier Carrasco Cruz <javier.carrasco.cruz@...il.com>
Subject: Re: [PATCH v3 1/4] arm: dts: nxp: lpc: lpc32xx: drop 'clocks' form
 rtc

On 13/04/2024 22:22, Javier Carrasco wrote:
> The RTC does not provide a controllable clock signal (it uses a fixed
> 32768 Hz crystal, the input clock of the SoC). Remove the 'clocks'
> property to better describe the device and avoid errors when checking
> the dts against the nxp,lpc3220-rtc binding.
> 
> Signed-off-by: Javier Carrasco <javier.carrasco.cruz@...il.com>
> ---
>  arch/arm/boot/dts/nxp/lpc/lpc32xx.dtsi | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/arch/arm/boot/dts/nxp/lpc/lpc32xx.dtsi b/arch/arm/boot/dts/nxp/lpc/lpc32xx.dtsi
> index 974410918f35..f78d67e672b4 100644
> --- a/arch/arm/boot/dts/nxp/lpc/lpc32xx.dtsi
> +++ b/arch/arm/boot/dts/nxp/lpc/lpc32xx.dtsi
> @@ -384,7 +384,6 @@ rtc: rtc@...24000 {
>  				reg = <0x40024000 0x1000>;
>  				interrupt-parent = <&sic1>;
>  				interrupts = <20 IRQ_TYPE_LEVEL_HIGH>;
> -				clocks = <&clk LPC32XX_CLK_RTC>;
>  			};
>  
>  			gpio: gpio@...28000 {
> 

A little reminder: the rest of the series was applied, but this patch is
still pending.The nxp,lpc3220-rtc binding was moved to trivial-rtc.yaml
and it is already in the mainline kernel.

Best regards,
Javier Carrasco