mtd: nand: remove useless fields from pxa3xx NAND platform data

The "enable arbiter" bit is available only for pxa3xx based platforms
but it was experimentally shown that even if this bit is reserved,
some Marvell platforms (64-bit) actually need it to be set. The driver
always set this bit regardless of this property, which is harmless.
Then this property is not needed.

The "num_cs" field is always 1 and for a good reason, the old driver
(pxa3xx_nand.c) could only handle one. The new driver that replaces it
(marvell_nand.c) can handle more, but better use device tree for such
description. As there is only one available chip select, there is no
need for an array of partitions neither an array of partition numbers.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>

1 files changed, 12 insertions, 31 deletions

diff --git a/include/linux/platform_data/mtd-nand-pxa3xx.h b/include/linux/platform_data/mtd-nand-pxa3xx.h
index b42ad83cbc20..4fd0f592a2d2 100644
--- a/include/linux/platform_data/mtd-nand-pxa3xx.h
+++ b/include/linux/platform_data/mtd-nand-pxa3xx.h
@@ -6,41 +6,22 @@
 #include <linux/mtd/partitions.h>
 
 /*
- * Current pxa3xx_nand controller has two chip select which
- * both be workable.
- *
- * Notice should be taken that:
- * When you want to use this feature, you should not enable the
- * keep configuration feature, for two chip select could be
- * attached with different nand chip. The different page size
- * and timing requirement make the keep configuration impossible.
+ * Current pxa3xx_nand controller has two chip select which both be workable but
+ * historically all platforms remaining on platform data used only one. Switch
+ * to device tree if you need more.
  */
-
-/* The max num of chip select current support */
-#define NUM_CHIP_SELECT         (2)
 struct pxa3xx_nand_platform_data {
-
-        /* the data flash bus is shared between the Static Memory
-         * Controller and the Data Flash Controller,  the arbiter
-         * controls the ownership of the bus
-         */
-        int     enable_arbiter;
-
-        /* allow platform code to keep OBM/bootloader defined NFC config */
-        int     keep_config;
-
-        /* indicate how many chip selects will be used */
-        int     num_cs;
-
-        /* use an flash-based bad block table */
-        bool    flash_bbt;
-
-        /* requested ECC strength and ECC step size */
+        /* Keep OBM/bootloader NFC timing configuration */
+        bool keep_config;
+        /* Use a flash-based bad block table */
+        bool flash_bbt;
+        /* Requested ECC strength and ECC step size */
         int ecc_strength, ecc_step_size;
-
-        const struct mtd_partition              *parts[NUM_CHIP_SELECT];
-        unsigned int                            nr_parts[NUM_CHIP_SELECT];
+        /* Partitions */
+        const struct mtd_partition *parts;
+        unsigned int nr_parts;
 };
 
 extern void pxa3xx_set_nand_info(struct pxa3xx_nand_platform_data *info);
+
 #endif /* __ASM_ARCH_PXA3XX_NAND_H */