iio: adc: add imx93 adc support

The ADC in i.mx93 is a total new ADC IP, add a driver to support
this ADC.

Currently, only support one shot normal conversion triggered by
software. For other mode, will add in future.
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Link: https://lore.kernel.org/r/20230117135137.1735536-2-haibo.chen@nxp.comSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

MAINTAINERS

@@ -15020,14 +15020,16 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/iio/adc/nxp,imx8qxp-adc.yaml
 F:	drivers/iio/adc/imx8qxp-adc.c
 
-NXP i.MX 7D/6SX/6UL AND VF610 ADC DRIVER
+NXP i.MX 7D/6SX/6UL/93 AND VF610 ADC DRIVER
 M:	Haibo Chen <haibo.chen@nxp.com>
 L:	linux-iio@vger.kernel.org
 L:	linux-imx@nxp.com
 S:	Maintained
 F:	Documentation/devicetree/bindings/iio/adc/fsl,imx7d-adc.yaml
 F:	Documentation/devicetree/bindings/iio/adc/fsl,vf610-adc.yaml
+F:	Documentation/devicetree/bindings/iio/adc/nxp,imx93-adc.yaml
 F:	drivers/iio/adc/imx7d_adc.c
+F:	drivers/iio/adc/imx93_adc.c
 F:	drivers/iio/adc/vf610_adc.c
 
 NXP PF8100/PF8121A/PF8200 PMIC REGULATOR DEVICE DRIVER

drivers/iio/adc/Kconfig

@@ -566,6 +566,16 @@ config IMX8QXP_ADC
 	  This driver can also be built as a module. If so, the module will be
 	  called imx8qxp-adc.
 
+config IMX93_ADC
+	tristate "IMX93 ADC driver"
+	depends on ARCH_MXC || COMPILE_TEST
+	depends on HAS_IOMEM
+	help
+	  Say yes here to build support for IMX93 ADC.
+
+	  This driver can also be built as a module. If so, the module will be
+	  called imx93_adc.
+
 config LP8788_ADC
 	tristate "LP8788 ADC driver"
 	depends on MFD_LP8788

drivers/iio/adc/Makefile

@@ -49,6 +49,7 @@ obj-$(CONFIG_HI8435) += hi8435.o
 obj-$(CONFIG_HX711) += hx711.o
 obj-$(CONFIG_IMX7D_ADC) += imx7d_adc.o
 obj-$(CONFIG_IMX8QXP_ADC) += imx8qxp-adc.o
+obj-$(CONFIG_IMX93_ADC) += imx93_adc.o
 obj-$(CONFIG_INA2XX_ADC) += ina2xx-adc.o
 obj-$(CONFIG_INGENIC_ADC) += ingenic-adc.o
 obj-$(CONFIG_INTEL_MRFLD_ADC) += intel_mrfld_adc.o