ARM: dts: microchip: sama7g54_curiosity: Add fixed-partitions for spi-nor flash

Add fixed-partitions for spi-nor flash to match the at91 boot flow
and layout of the nand flash.
Partitions can be listed from /proc/mtd:

[root@sama7g54 ~]$ cat /proc/mtd | grep qspi
mtd6: 00040000 00001000 "qspi1: at91bootstrap"
mtd7: 00100000 00001000 "qspi1: u-boot"
mtd8: 00040000 00001000 "qspi1: u-boot env"
mtd9: 00080000 00001000 "qspi1: device tree"
mtd10: 00600000 00001000 "qspi1: kernel"

[root@sama7g54 ~]$ mtdinfo /dev/mtd10
mtd10
Name:                           qspi1: kernel
Type:                           nor
Eraseblock size:                4096 bytes, 4.0 KiB
Amount of eraseblocks:          1536 (6291456 bytes, 6.0 MiB)
Minimum input/output unit size: 1 byte
Sub-page size:                  1 byte
Character device major/minor:   90:20
Bad blocks are allowed:         false
Device is writable:             true

Signed-off-by: Mihai Sain <mihai.sain@microchip.com>
Link: https://lore.kernel.org/r/20250429064547.5807-1-mihai.sain@microchip.com
Signed-off-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>

diff --git a/arch/arm/boot/dts/microchip/at91-sama7g54_curiosity.dts b/arch/arm/boot/dts/microchip/at91-sama7g54_curiosity.dts
index 2dec2218f32ce72b5b145e2cf12a2db1b706c72e..eb5f27ce19429879afd8b1cfa7c162c5a2f43fc7 100644 (file)
--- a/arch/arm/boot/dts/microchip/at91-sama7g54_curiosity.dts
+++ b/arch/arm/boot/dts/microchip/at91-sama7g54_curiosity.dts
@@ -369,6 +369,38 @@
                spi-tx-bus-width = <4>;
                spi-rx-bus-width = <4>;
                m25p,fast-read;
+               label = "at91-qspi";
+
+               partitions {
+                       compatible = "fixed-partitions";
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+
+                       at91bootstrap@0 {
+                               label = "qspi1: at91bootstrap";
+                               reg = <0x0 0x40000>;
+                       };
+
+                       bootloader@40000 {
+                               label = "qspi1: u-boot";
+                               reg = <0x40000 0x100000>;
+                       };
+
+                       bootloaderenv@140000 {
+                               label = "qspi1: u-boot env";
+                               reg = <0x140000 0x40000>;
+                       };
+
+                       dtb@180000 {
+                               label = "qspi1: device tree";
+                               reg = <0x180000 0x80000>;
+                       };
+
+                       kernel@200000 {
+                               label = "qspi1: kernel";
+                               reg = <0x200000 0x600000>;
+                       };
+               };
        };
 };