mtd: nand: davinci: adjust DT properties to MTD generic

The properties davinci-ecc-mode, davinci-nand-use-bbt, davinci-nand-buswidth
are MTD generic. Correct names for them are: nand-ecc-mode, nand-on-flash-bbt,
nand-bus-width accordingly. So rename them in dts and documentation.

Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Taras Kondratiuk <taras@ti.com>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>

diff --git a/Documentation/devicetree/bindings/mtd/davinci-nand.txt b/Documentation/devicetree/bindings/mtd/davinci-nand.txt
index d2a3fc0200233133e669e03e15e20bcd521bd45e..befaa5bb84e5f08d4420bdc5434e69c5f482d1e2 100644 (file)
--- a/Documentation/devicetree/bindings/mtd/davinci-nand.txt
+++ b/Documentation/devicetree/bindings/mtd/davinci-nand.txt
@@ -37,7 +37,7 @@ Recommended properties :
 - ti,davinci-mask-chipsel:     mask for chipselect address. Needed to mask
                                addresses for given chipselect.
 
-- ti,davinci-ecc-mode:         operation mode of the NAND ecc mode. ECC mode
+- nand-ecc-mode:               operation mode of the NAND ecc mode. ECC mode
                                valid values for davinci driver:
                                - "none"
                                - "soft"
@@ -45,10 +45,25 @@ Recommended properties :
 
 - ti,davinci-ecc-bits:         used ECC bits, currently supported 1 or 4.
 
-- ti,davinci-nand-buswidth:    buswidth 8 or 16.
+- nand-bus-width:              buswidth 8 or 16. If not present 8.
+
+- nand-on-flash-bbt:           use flash based bad block table support. OOB
+                               identifier is saved in OOB area. If not present
+                               false.
+
+Deprecated properties:
+
+- ti,davinci-ecc-mode:         operation mode of the NAND ecc mode. ECC mode
+                               valid values for davinci driver:
+                               - "none"
+                               - "soft"
+                               - "hw"
+
+- ti,davinci-nand-buswidth:    buswidth 8 or 16. If not present 8.
 
 - ti,davinci-nand-use-bbt:     use flash based bad block table support. OOB
-                               identifier is saved in OOB area.
+                               identifier is saved in OOB area. If not present
+                               false.
 
 Nand device bindings may contain additional sub-nodes describing partitions of
 the address space. See partition.txt for more detail. The NAND Flash timing
@@ -66,9 +81,9 @@ nand_cs3@62000000 {
        ti,davinci-mask-ale = <0>;
        ti,davinci-mask-cle = <0>;
        ti,davinci-mask-chipsel = <0>;
-       ti,davinci-ecc-mode = "hw";
+       nand-ecc-mode = "hw";
        ti,davinci-ecc-bits = <4>;
-       ti,davinci-nand-use-bbt;
+       nand-on-flash-bbt;
 
        partition@180000 {
                label = "ubifs";

diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c
index e6757b3a33b17ecee57cc2c26e185d0d16e64a04..8a61a40f2ca979fe0230d30b42a0efb47583df8c 100644 (file)
--- a/drivers/mtd/nand/davinci_nand.c
+++ b/drivers/mtd/nand/davinci_nand.c
@@ -35,6 +35,7 @@
 #include <linux/slab.h>
 #include <linux/of_device.h>
 #include <linux/of.h>
+#include <linux/of_mtd.h>
 
 #include <linux/platform_data/mtd-davinci.h>
 #include <linux/platform_data/mtd-davinci-aemif.h>
@@ -534,7 +535,6 @@ static struct davinci_nand_pdata
                struct davinci_nand_pdata *pdata;
                const char *mode;
                u32 prop;
-               int len;
 
                pdata =  devm_kzalloc(&pdev->dev,
                                sizeof(struct davinci_nand_pdata),
@@ -558,6 +558,8 @@ static struct davinci_nand_pdata
                        "ti,davinci-mask-chipsel", &prop))
                        pdata->mask_chipsel = prop;
                if (!of_property_read_string(pdev->dev.of_node,
+                       "nand-ecc-mode", &mode) ||
+                   !of_property_read_string(pdev->dev.of_node,
                        "ti,davinci-ecc-mode", &mode)) {
                        if (!strncmp("none", mode, 4))
                                pdata->ecc_mode = NAND_ECC_NONE;
@@ -569,12 +571,16 @@ static struct davinci_nand_pdata
                if (!of_property_read_u32(pdev->dev.of_node,
                        "ti,davinci-ecc-bits", &prop))
                        pdata->ecc_bits = prop;
-               if (!of_property_read_u32(pdev->dev.of_node,
+
+               prop = of_get_nand_bus_width(pdev->dev.of_node);
+               if (0 < prop || !of_property_read_u32(pdev->dev.of_node,
                        "ti,davinci-nand-buswidth", &prop))
                        if (prop == 16)
                                pdata->options |= NAND_BUSWIDTH_16;
-               if (of_find_property(pdev->dev.of_node,
-                       "ti,davinci-nand-use-bbt", &len))
+               if (of_property_read_bool(pdev->dev.of_node,
+                       "nand-on-flash-bbt") ||
+                   of_property_read_bool(pdev->dev.of_node,
+                       "ti,davinci-nand-use-bbt"))
                        pdata->bbt_options = NAND_BBT_USE_FLASH;
        }