[PATCH 3/3] ls1046ardb: enable IFC NAND.

[Sascha Hauer]

On Fri, Aug 13, 2021 at 09:16:48AM +0100, Renaud Barbier wrote:
> Set the NAND timings and enable the IFC NAND driver.
> 
> Signed-off-by: Renaud Barbier <renaud.barbier at abaco.com>
> ---
>  arch/arm/configs/layerscape_defconfig | 11 +++++++
>  arch/arm/mach-layerscape/Makefile     |  1 +
>  arch/arm/mach-layerscape/nand.c       | 44 +++++++++++++++++++++++++++
>  3 files changed, 56 insertions(+)
>  create mode 100644 arch/arm/mach-layerscape/nand.c
> 
> diff --git a/arch/arm/configs/layerscape_defconfig b/arch/arm/configs/layerscape_defconfig
> index 394cd95c98..fb8e885353 100644
> --- a/arch/arm/configs/layerscape_defconfig
> +++ b/arch/arm/configs/layerscape_defconfig
> @@ -34,6 +34,10 @@ CONFIG_CMD_GO=y
>  CONFIG_CMD_RESET=y
>  CONFIG_CMD_UIMAGE=y
>  CONFIG_CMD_PARTITION=y
> +CONFIG_CMD_MOUNT=y
> +CONFIG_CMD_UBI=y
> +CONFIG_CMD_UBIFORMAT=y
> +CONFIG_CMD_UMOUNT=y
>  CONFIG_CMD_EXPORT=y
>  CONFIG_CMD_LOADENV=y
>  CONFIG_CMD_PRINTENV=y
> @@ -69,6 +73,7 @@ CONFIG_CMD_GPIO=y
>  CONFIG_CMD_I2C=y
>  CONFIG_CMD_LED=y
>  CONFIG_CMD_SPI=y
> +CONFIG_CMD_NAND=y
>  CONFIG_CMD_LED_TRIGGER=y
>  CONFIG_CMD_WD=y
>  CONFIG_CMD_BAREBOX_UPDATE=y
> @@ -85,6 +90,10 @@ CONFIG_DP83867_PHY=y
>  CONFIG_REALTEK_PHY=y
>  CONFIG_NET_DSA_MV88E6XXX=y
>  CONFIG_DRIVER_SPI_FSL_QUADSPI=y
> +CONFIG_NAND=y
> +CONFIG_NAND_FSL_IFC=y
> +CONFIG_MTD_UBI=y
> +CONFIG_MTD_UBI_BEB_LIMIT=20
>  CONFIG_I2C=y
>  CONFIG_I2C_IMX=y
>  CONFIG_I2C_MUX=y
> @@ -112,5 +121,7 @@ CONFIG_FS_NFS=y
>  CONFIG_FS_FAT=y
>  CONFIG_FS_FAT_WRITE=y
>  CONFIG_FS_FAT_LFN=y
> +CONFIG_FS_UBIFS=y
> +CONFIG_FS_UBIFS_COMPRESSION_LZO=y
>  CONFIG_ZLIB=y
>  CONFIG_LZO_DECOMPRESS=y
> diff --git a/arch/arm/mach-layerscape/Makefile b/arch/arm/mach-layerscape/Makefile
> index 854a327c91..99da7b2af0 100644
> --- a/arch/arm/mach-layerscape/Makefile
> +++ b/arch/arm/mach-layerscape/Makefile
> @@ -6,3 +6,4 @@ obj-pbl-y += boot.o
>  pbl-y += xload-qspi.o xload.o
>  obj-$(CONFIG_ARCH_LAYERSCAPE_PPA) += ppa.o ppa-entry.o
>  obj-$(CONFIG_BOOTM) += pblimage.o
> +obj-$(CONFIG_NAND_FSL_IFC) += nand.o
> diff --git a/arch/arm/mach-layerscape/nand.c b/arch/arm/mach-layerscape/nand.c
> new file mode 100644
> index 0000000000..b36c6b3c46
> --- /dev/null
> +++ b/arch/arm/mach-layerscape/nand.c
> @@ -0,0 +1,44 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +
> +#include <common.h>
> +#include <init.h>
> +#include <of_address.h>
> +#include <linux/fsl_ifc.h>
> +
> +static int rdb_nand_init(void)
> +{
> +	struct device_node *np;
> +	void __iomem *ifc;
> +
> +	if (!of_machine_is_compatible("fsl,ls1046a-rdb"))
> +		return 0;

The code as such is board specific and thus should be in
arch/arm/boards/ls1046ardb/. We could make a architecture specific
helper function from it which is then called by the board code, but the
values written to the registers below are probably very board specific
anyway, so with a generic helper function we wouldn't win that much.

I moved rdb_nand_init() to the board code while applying.

Thanks
 Sascha


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