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@gmail.com>
---
 drivers/rtc/Kconfig        | 21 +++++----
 drivers/rtc/rtc-pcf85063.c | 87 +++++++++++++++++++++++++++++++++++++-
 2 files changed, 98 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..d9b67b959d18 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 +741,83 @@ 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);
+
+static const struct of_device_id rv8063_of_match[] = {
+	{ .compatible = "microcrystal,rv8063" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, rv8063_of_match);
+
+static int rv8063_probe(struct spi_device *spi)
+{
+	const struct pcf85063_config *config = &config_rv8063;
+	struct regmap *regmap;
+
+	regmap = devm_regmap_init_spi(spi, &config->regmap);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	return pcf85063_probe(&spi->dev, regmap, spi->irq, config);
+}
+
+static struct spi_driver rv8063_driver = {
+	.driver         = {
+		.name   = "rv8063",
+		.of_match_table = rv8063_of_match,
+	},
+	.probe          = rv8063_probe,
+	.id_table	= rv8063_id,
+};
+
+static int __init rv8063_register_driver(void)
+{
+	return spi_register_driver(&rv8063_driver);
+}
+
+static void __exit rv8063_unregister_driver(void)
+{
+	spi_unregister_driver(&rv8063_driver);
+}
+
+#else
+
+static int __init rv8063_register_driver(void)
+{
+	return 0;
+}
+
+static void __exit rv8063_unregister_driver(void)
+{
+}
+
+#endif /* IS_ENABLED(CONFIG_SPI_MASTER) */
+
 static int __init pcf85063_init(void)
 {
-	return pcf85063_register_driver();
+	int ret;
+
+	ret = pcf85063_register_driver();
+	if (ret)
+		return ret;
+
+	ret = rv8063_register_driver();
+	if (ret)
+		pcf85063_unregister_driver();
+
+	return ret;
 }
 module_init(pcf85063_init);
 
 static void __exit pcf85063_exit(void)
 {
+	rv8063_unregister_driver();
 	pcf85063_unregister_driver();
 }
 module_exit(pcf85063_exit);
-- 
2.25.1

Hello,
Since there was no feedback for this patch I'd like to send a reminder here.
Is there a chance that this patch series will get integrated into the mainline?

Kind regards,
Antoni Pokusinski

On Fri, May 09, 2025 at 08:37:50PM +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@gmail.com>
> ---
>  drivers/rtc/Kconfig        | 21 +++++----
>  drivers/rtc/rtc-pcf85063.c | 87 +++++++++++++++++++++++++++++++++++++-
>  2 files changed, 98 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..d9b67b959d18 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 +741,83 @@ 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);
> +
> +static const struct of_device_id rv8063_of_match[] = {
> +	{ .compatible = "microcrystal,rv8063" },
> +	{}
> +};
> +MODULE_DEVICE_TABLE(of, rv8063_of_match);
> +
> +static int rv8063_probe(struct spi_device *spi)
> +{
> +	const struct pcf85063_config *config = &config_rv8063;
> +	struct regmap *regmap;
> +
> +	regmap = devm_regmap_init_spi(spi, &config->regmap);
> +	if (IS_ERR(regmap))
> +		return PTR_ERR(regmap);
> +
> +	return pcf85063_probe(&spi->dev, regmap, spi->irq, config);
> +}
> +
> +static struct spi_driver rv8063_driver = {
> +	.driver         = {
> +		.name   = "rv8063",
> +		.of_match_table = rv8063_of_match,
> +	},
> +	.probe          = rv8063_probe,
> +	.id_table	= rv8063_id,
> +};
> +
> +static int __init rv8063_register_driver(void)
> +{
> +	return spi_register_driver(&rv8063_driver);
> +}
> +
> +static void __exit rv8063_unregister_driver(void)
> +{
> +	spi_unregister_driver(&rv8063_driver);
> +}
> +
> +#else
> +
> +static int __init rv8063_register_driver(void)
> +{
> +	return 0;
> +}
> +
> +static void __exit rv8063_unregister_driver(void)
> +{
> +}
> +
> +#endif /* IS_ENABLED(CONFIG_SPI_MASTER) */
> +
>  static int __init pcf85063_init(void)
>  {
> -	return pcf85063_register_driver();
> +	int ret;
> +
> +	ret = pcf85063_register_driver();
> +	if (ret)
> +		return ret;
> +
> +	ret = rv8063_register_driver();
> +	if (ret)
> +		pcf85063_unregister_driver();
> +
> +	return ret;
>  }
>  module_init(pcf85063_init);
>  
>  static void __exit pcf85063_exit(void)
>  {
> +	rv8063_unregister_driver();
>  	pcf85063_unregister_driver();
>  }
>  module_exit(pcf85063_exit);
> -- 
> 2.25.1
>