linux-kernel - Re: [PATCH v3 3/3] rtc: pcf85063: add support for RV8063

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Message-ID: <20250411192450.GA3750226-robh@kernel.org>
Date: Fri, 11 Apr 2025 14:24:50 -0500
From: Rob Herring <robh@...nel.org>
To: Antoni Pokusinski <apokusinski01@...il.com>
Cc: alexandre.belloni@...tlin.com, krzk+dt@...nel.org, conor+dt@...nel.org,
	alexander.stein@...tq-group.com, linux-rtc@...r.kernel.org,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v3 3/3] rtc: pcf85063: add support for RV8063

On Thu, Apr 10, 2025 at 10:23:17PM +0200, Antoni Pokusinski wrote:
> Microcrystal RV8063 is a real-time clock with SPI interface. Its
> functionality is very similar to the RV8263 rtc.
> 
> Signed-off-by: Antoni Pokusinski <apokusinski01@...il.com>
> ---
>  drivers/rtc/Kconfig        | 21 +++++-----
>  drivers/rtc/rtc-pcf85063.c | 80 +++++++++++++++++++++++++++++++++++++-
>  2 files changed, 91 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
> index 838bdc138ffe..1b9be96faa13 100644
> --- a/drivers/rtc/Kconfig
> +++ b/drivers/rtc/Kconfig
> @@ -483,15 +483,6 @@ config RTC_DRV_PCF8523
>  	  This driver can also be built as a module. If so, the module
>  	  will be called rtc-pcf8523.
>  
> -config RTC_DRV_PCF85063
> -	tristate "NXP PCF85063"
> -	select REGMAP_I2C
> -	help
> -	  If you say yes here you get support for the PCF85063 RTC chip
> -
> -	  This driver can also be built as a module. If so, the module
> -	  will be called rtc-pcf85063.
> -
>  config RTC_DRV_PCF85363
>  	tristate "NXP PCF85363"
>  	select REGMAP_I2C
> @@ -971,6 +962,18 @@ config RTC_DRV_PCF2127
>  	  This driver can also be built as a module. If so, the module
>  	  will be called rtc-pcf2127.
>  
> +config RTC_DRV_PCF85063
> +	tristate "NXP PCF85063"
> +	depends on RTC_I2C_AND_SPI
> +	select REGMAP_I2C if I2C
> +	select REGMAP_SPI if SPI_MASTER
> +	help
> +	  If you say yes here you get support for the PCF85063 and RV8063
> +	  RTC chips.
> +
> +	  This driver can also be built as a module. If so, the module
> +	  will be called rtc-pcf85063.
> +
>  config RTC_DRV_RV3029C2
>  	tristate "Micro Crystal RV3029/3049"
>  	depends on RTC_I2C_AND_SPI
> diff --git a/drivers/rtc/rtc-pcf85063.c b/drivers/rtc/rtc-pcf85063.c
> index 03dfc58f4cd7..bcfefe823044 100644
> --- a/drivers/rtc/rtc-pcf85063.c
> +++ b/drivers/rtc/rtc-pcf85063.c
> @@ -17,6 +17,7 @@
>  #include <linux/of.h>
>  #include <linux/pm_wakeirq.h>
>  #include <linux/regmap.h>
> +#include <linux/spi/spi.h>
>  
>  /*
>   * Information for this driver was pulled from the following datasheets.
> @@ -29,6 +30,9 @@
>   *
>   *  https://www.microcrystal.com/fileadmin/Media/Products/RTC/App.Manual/RV-8263-C7_App-Manual.pdf
>   *  RV8263 -- Rev. 1.0 — January 2019
> + *
> + *  https://www.microcrystal.com/fileadmin/Media/Products/RTC/App.Manual/RV-8063-C7_App-Manual.pdf
> + *  RV8063 -- Rev. 1.1 - October 2018
>   */
>  
>  #define PCF85063_REG_CTRL1		0x00 /* status */
> @@ -559,6 +563,18 @@ static const struct pcf85063_config config_rv8263 = {
>  	.force_cap_7000 = 1,
>  };
>  
> +static const struct pcf85063_config config_rv8063 = {
> +	.regmap = {
> +		.reg_bits = 8,
> +		.val_bits = 8,
> +		.max_register = 0x11,
> +		.read_flag_mask = BIT(7) | BIT(5),
> +		.write_flag_mask = BIT(5),
> +	},
> +	.has_alarms = 1,
> +	.force_cap_7000 = 1,
> +};
> +
>  static int pcf85063_probe(struct device *dev, struct regmap *regmap, int irq,
>  			  const struct pcf85063_config *config)
>  {
> @@ -725,14 +741,76 @@ static void pcf85063_unregister_driver(void)
>  
>  #endif /* IS_ENABLED(CONFIG_I2C) */
>  
> +#if IS_ENABLED(CONFIG_SPI_MASTER)
> +
> +static const struct spi_device_id rv8063_id[] = {
> +	{ "rv8063" },
> +	{}
> +};
> +MODULE_DEVICE_TABLE(spi, rv8063_id);

You need the of_device_id table too.

Rob