[PATCH v2] mtd: nand: Add help text for i.MX NAND controllers

[PATCH v2] mtd: nand: Add help text for i.MX NAND controllers

[Trent Piepho]

There are two different NAND drivers, used for different chips in the
i.MX range.  It's quite confusing as to which to use.  Add some help
text to clarify.

Signed-off-by: Trent Piepho <tpiepho@gmail.com>
---
Changes from V1:
  Add GPMI and NFC names, fix typos.

 drivers/mtd/nand/Kconfig | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 7c9326089..8fb1cedd6 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -32,14 +32,27 @@ config NAND_ALLOW_ERASE_BAD
 
 config NAND_IMX
 	bool
-	prompt "i.MX NAND driver"
+	prompt "i.MX21 to 53 NAND driver aka 'mxc', for NFC"
 	depends on ARCH_IMX
+	help
+	  Support for NAND flash on Freescale/NXP i.MX devices.  This is for the
+	  "MXC" series:  i.MX21/25/27/31/35/51/53.
+
+	  This is not for the "MXS" series i.MX processors (23 & 28), or i.MX6
+	  and later, which use the GPMI NAND controller from the MXS series. 
+	  See the i.MX 'mxs' driver for those chips.
 
 config NAND_MXS
 	bool
 	select STMP_DEVICE
-	prompt "i.MX23/28/6 NAND driver"
+	prompt "i.MX23/28 & 6+ NAND driver aka 'mxs', for GPMI"
 	depends on MXS_APBH_DMA
+	help
+	  Support for NAND flash on Freescale/NXP i.MX devices.	 This is for the
+	  "MXS" series:  i.MX23/28 and all i.MX6 and later SoCs.
+
+	  This is not for the "MXC" series of i.MX processors in the i.MX21 to
+	  i.MX53 range.  See the i.MX "mxc" driver for those chips.
 
 config NAND_OMAP_GPMC
 	tristate "NAND Flash Support for GPMC based OMAP platforms"
-- 
2.26.2


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Re: [PATCH v2] mtd: nand: Add help text for i.MX NAND controllers

[Sascha Hauer]

On Thu, May 27, 2021 at 01:37:41AM -0700, Trent Piepho wrote:
> There are two different NAND drivers, used for different chips in the
> i.MX range.  It's quite confusing as to which to use.  Add some help
> text to clarify.
> 
> Signed-off-by: Trent Piepho <tpiepho@gmail.com>
> ---
> Changes from V1:
>   Add GPMI and NFC names, fix typos.

Applied, thanks

Sascha

> 
>  drivers/mtd/nand/Kconfig | 17 +++++++++++++++--
>  1 file changed, 15 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
> index 7c9326089..8fb1cedd6 100644
> --- a/drivers/mtd/nand/Kconfig
> +++ b/drivers/mtd/nand/Kconfig
> @@ -32,14 +32,27 @@ config NAND_ALLOW_ERASE_BAD
>  
>  config NAND_IMX
>  	bool
> -	prompt "i.MX NAND driver"
> +	prompt "i.MX21 to 53 NAND driver aka 'mxc', for NFC"
>  	depends on ARCH_IMX
> +	help
> +	  Support for NAND flash on Freescale/NXP i.MX devices.  This is for the
> +	  "MXC" series:  i.MX21/25/27/31/35/51/53.
> +
> +	  This is not for the "MXS" series i.MX processors (23 & 28), or i.MX6
> +	  and later, which use the GPMI NAND controller from the MXS series. 
> +	  See the i.MX 'mxs' driver for those chips.
>  
>  config NAND_MXS
>  	bool
>  	select STMP_DEVICE
> -	prompt "i.MX23/28/6 NAND driver"
> +	prompt "i.MX23/28 & 6+ NAND driver aka 'mxs', for GPMI"
>  	depends on MXS_APBH_DMA
> +	help
> +	  Support for NAND flash on Freescale/NXP i.MX devices.	 This is for the
> +	  "MXS" series:  i.MX23/28 and all i.MX6 and later SoCs.
> +
> +	  This is not for the "MXC" series of i.MX processors in the i.MX21 to
> +	  i.MX53 range.  See the i.MX "mxc" driver for those chips.
>  
>  config NAND_OMAP_GPMC
>  	tristate "NAND Flash Support for GPMC based OMAP platforms"
> -- 
> 2.26.2
> 
> 
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