ARM: dts: am335x-evm: NAND: update MTD partition table

This patch has following updates, specific to MTD/NAND DT
 - update MTD NAND partition table to keep compatibility between
   different boards and mainline u-boot.
 - prefix 'NAND.' in names of NAND device MTD partitions to differentiate them
   from other MTD device partitions (like NOR and QSPI)
               Partition_Name            Partition_Size
    /dev/mtd0  NAND.SPL                  1 block-size*
    /dev/mtd1  NAND.SPL.backup1          1 block-size*
    /dev/mtd2  NAND.SPL.backup2          1 block-size*
    /dev/mtd3  NAND.SPL.backup3          1 block-size*
    /dev/mtd5  NAND.u-boot-spl-os        2 block-size* [for falcon boot]
    /dev/mtd4  NAND.u-boot               1 MB
    /dev/mtd6  NAND.u-boot-env           1 block-size*
    /dev/mtd7  NAND.u-boot-env.backup1   1 block-size*
    /dev/mtd8  NAND.kernel               till 0xA00000
    /dev/mtd9  NAND.file-system          till end of device

* am335x-evm uses NAND device with block-size=128KiB

Signed-off-by: Pekon Gupta <pekon@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 25 insertions, 23 deletions

diff --git a/arch/arm/boot/dts/am335x-evm.dts b/arch/arm/boot/dts/am335x-evm.dts
index 7e6c64ed966d..17c3cc0890ac 100644
--- a/arch/arm/boot/dts/am335x-evm.dts
+++ b/arch/arm/boot/dts/am335x-evm.dts
@@ -460,50 +460,52 @@
                 gpmc,wait-monitoring-ns = <0>;
                 gpmc,wr-access-ns = <40>;
                 gpmc,wr-data-mux-bus-ns = <0>;
-
-                #address-cells = <1>;
-                #size-cells = <1>;
                 elm_id = <&elm>;
-
                 /* MTD partition table */
+                /* All SPL-* partitions are sized to minimal length
+                 * which can be independently programmable. For
+                 * NAND flash this is equal to size of erase-block */
+                #address-cells = <1>;
+                #size-cells = <1>;
                 partition@0 {
-                        label = "SPL1";
+                        label = "NAND.SPL";
                         reg = <0x00000000 0x000020000>;
                 };
-
                 partition@1 {
-                        label = "SPL2";
+                        label = "NAND.SPL.backup1";
                         reg = <0x00020000 0x00020000>;
                 };
-
                 partition@2 {
-                        label = "SPL3";
+                        label = "NAND.SPL.backup2";
                         reg = <0x00040000 0x00020000>;
                 };
-
                 partition@3 {
-                        label = "SPL4";
+                        label = "NAND.SPL.backup3";
                         reg = <0x00060000 0x00020000>;
                 };
-
                 partition@4 {
-                        label = "U-boot";
-                        reg = <0x00080000 0x001e0000>;
+                        label = "NAND.u-boot-spl";
+                        reg = <0x00080000 0x00040000>;
                 };
-
                 partition@5 {
-                        label = "environment";
-                        reg = <0x00260000 0x00020000>;
+                        label = "NAND.u-boot";
+                        reg = <0x000C0000 0x00100000>;
                 };
-
                 partition@6 {
-                        label = "Kernel";
-                        reg = <0x00280000 0x00500000>;
+                        label = "NAND.u-boot-env";
+                        reg = <0x001C0000 0x00020000>;
                 };
-
                 partition@7 {
-                        label = "File-System";
-                        reg = <0x00780000 0x0F880000>;
+                        label = "NAND.u-boot-env.backup1";
+                        reg = <0x001E0000 0x00020000>;
+                };
+                partition@8 {
+                        label = "NAND.kernel";
+                        reg = <0x00200000 0x00800000>;
+                };
+                partition@9 {
+                        label = "NAND.file-system";
+                        reg = <0x00A00000 0x0F600000>;
                 };
         };
 };