linux-kernel - Re: [PATCH v2 10/15] arm64: dts: freescale: imx93-phyboard-segin: Add RTC support

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Message-ID: <Z/6pkVPh5Rn9oOPY@lizhi-Precision-Tower-5810>
Date: Tue, 15 Apr 2025 14:46:41 -0400
From: Frank Li <Frank.li@....com>
To: Primoz Fiser <primoz.fiser@...ik.com>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>, devicetree@...r.kernel.org,
	imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, upstream@...ts.phytec.de
Subject: Re: [PATCH v2 10/15] arm64: dts: freescale: imx93-phyboard-segin:
 Add RTC support

On Tue, Apr 15, 2025 at 06:33:06AM +0200, Primoz Fiser wrote:
> Add support for RTC connected via I2C on phyBOARD-Segin-i.MX93. Set
> default RTC by configuring the aliases.
>
> Signed-off-by: Primoz Fiser <primoz.fiser@...ik.com>
> ---
> Changes in v2:
> - reword commit message
>
>  .../dts/freescale/imx93-phyboard-segin.dts    | 36 +++++++++++++++++++
>  1 file changed, 36 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx93-phyboard-segin.dts b/arch/arm64/boot/dts/freescale/imx93-phyboard-segin.dts
> index 525f52789f8b..38b89398e646 100644
> --- a/arch/arm64/boot/dts/freescale/imx93-phyboard-segin.dts
> +++ b/arch/arm64/boot/dts/freescale/imx93-phyboard-segin.dts
> @@ -17,6 +17,11 @@ /{
>  	compatible = "phytec,imx93-phyboard-segin", "phytec,imx93-phycore-som",
>  		     "fsl,imx93";
>
> +	aliases {
> +		rtc0 = &i2c_rtc;
> +		rtc1 = &bbnsm_rtc;
> +	};
> +
>  	chosen {
>  		stdout-path = &lpuart1;
>  	};
> @@ -33,6 +38,24 @@ reg_usdhc2_vmmc: regulator-usdhc2 {
>  	};
>  };
>
> +/* I2C2 */

nit: needn't it

> +&lpi2c2 {
> +	clock-frequency = <400000>;
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_lpi2c2>;
> +	status = "okay";
> +
> +	/* RTC */

the same here, not name is rtc.

Frank

> +	i2c_rtc: rtc@68 {
> +		compatible = "microcrystal,rv4162";
> +		reg = <0x68>;
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&pinctrl_rtc>;
> +		interrupt-parent = <&gpio4>;
> +		interrupts = <26 IRQ_TYPE_LEVEL_LOW>;
> +	};
> +};
> +
>  /* Console */
>  &lpuart1 {
>  	pinctrl-names = "default";
> @@ -56,6 +79,13 @@ &usdhc2 {
>  };
>
>  &iomuxc {
> +	pinctrl_lpi2c2: lpi2c2grp {
> +		fsl,pins = <
> +			MX93_PAD_I2C2_SCL__LPI2C2_SCL		0x40000b9e
> +			MX93_PAD_I2C2_SDA__LPI2C2_SDA		0x40000b9e
> +		>;
> +	};
> +
>  	pinctrl_uart1: uart1grp {
>  		fsl,pins = <
>  			MX93_PAD_UART1_RXD__LPUART1_RX		0x31e
> @@ -69,6 +99,12 @@ MX93_PAD_SD2_RESET_B__GPIO3_IO07	0x31e
>  		>;
>  	};
>
> +	pinctrl_rtc: rtcgrp {
> +		fsl,pins = <
> +			MX93_PAD_ENET2_RD2__GPIO4_IO26		0x31e
> +		>;
> +	};
> +
>  	pinctrl_usdhc2_cd: usdhc2cdgrp {
>  		fsl,pins = <
>  			MX93_PAD_SD2_CD_B__GPIO3_IO00		0x31e
> --
> 2.34.1
>