drivers: nand: brcmnand: add parameter parameter-page-big-endian

The parameter page isn't always in big endian, so we add
an option to choose the endiannes of the parameter page.

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>

diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
index 7791077142b7eeb17dabe2f8466ef0d855e98b12..e333320808356597915d71168546a60361774b96 100644 (file)
--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
+++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
@@ -113,6 +113,7 @@ struct brcmnand_controller {
        unsigned int            irq;
        unsigned int            dma_irq;
        int                     nand_version;
+       int                     parameter_page_big_endian;
 
        /* Some SoCs provide custom interrupt status register(s) */
        struct brcmnand_soc     *soc;
@@ -1439,12 +1440,20 @@ static void brcmnand_cmdfunc(struct mtd_info *mtd, unsigned command,
                 * Must cache the FLASH_CACHE now, since changes in
                 * SECTOR_SIZE_1K may invalidate it
                 */
-               for (i = 0; i < FC_WORDS; i++)
+               for (i = 0; i < FC_WORDS; i++) {
+                       u32 fc;
+
+                       fc = brcmnand_read_fc(ctrl, i);
+
                        /*
                         * Flash cache is big endian for parameter pages, at
                         * least on STB SoCs
                         */
-                       flash_cache[i] = be32_to_cpu(brcmnand_read_fc(ctrl, i));
+                       if (ctrl->parameter_page_big_endian)
+                               flash_cache[i] = be32_to_cpu(fc);
+                       else
+                               flash_cache[i] = le32_to_cpu(fc);
+               }
 
                brcmnand_soc_data_bus_unprepare(ctrl->soc, true);
 
@@ -2550,6 +2559,10 @@ int brcmnand_probe(struct udevice *dev, struct brcmnand_soc *soc)
        nand_hw_control_init(&ctrl->controller);
        INIT_LIST_HEAD(&ctrl->host_list);
 
+       /* Is parameter page in big endian ? */
+       ctrl->parameter_page_big_endian =
+           dev_read_u32_default(dev, "parameter-page-big-endian", 1);
+
        /* NAND register range */
 #ifndef __UBOOT__
        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);