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apm821xx: MBL: make mtd chip work

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The MBL has a 512KiB Microchip SST39VF040 chip for uboot and
not much else.

Thanks to Ewald who figured out that the "jedec-probe" vs.
"jedec-flash" was the wrong binding. With this information
and the jedec-probe support enabled => the chip works.

| physmap-flash 4fff80000.nor_flash: physmap platform flash device: [mem 0x4fff80000-0x4ffffffff]
| Found: SST 39LF040
| 4fff80000.nor_flash: Found 1 x8 devices at 0x0 in 8-bit bank

Suggested-by: Ewald Comhaire <e.comhaire@gmail.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
This commit is contained in:
Christian Lamparter 2022-06-12 11:48:01 +02:00
parent 6006f73383
commit 5f7828fcc2
4 changed files with 11 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
package/boot/uboot-envtools/files/apm821xx
View File

@ -19,6 +19,10 @@ netgear,wndap620|\
netgear,wndap660)
ubootenv_add_uci_config "/dev/mtd1" "0x0" "0x4000" "0x4000" "4"
;;
wd,mybooklive)
ubootenv_add_uci_config "/dev/mtd1" "0x0" "0x1000" "0x1000" "1"
ubootenv_add_uci_config "/dev/mtd1" "0x1000" "0x1000" "0x1000" "1"
;;
esac
config_load ubootenv

2
target/linux/apm821xx/Makefile
View File

@ -21,6 +21,6 @@ include $(INCLUDE_DIR)/target.mk
KERNELNAME:=uImage
DEFAULT_PACKAGES += \
kmod-leds-gpio kmod-i2c-core kmod-gpio-button-hotplug
kmod-leds-gpio kmod-i2c-core kmod-gpio-button-hotplug uboot-envtools
$(eval $(call BuildTarget))

5
target/linux/apm821xx/dts/wd-mybooklive.dts
View File

@ -22,7 +22,7 @@
ebc {
nor_flash@0,0 {
status = "okay";
compatible = "amd,s29gl512n", "jedec-probe", "cfi-flash", "mtd-rom";
compatible = "microchip,sst39vf040", "jedec-flash";
bank-width = <1>;
reg = <0x00000000 0x00000000 0x00080000>;
#address-cells = <1>;
@ -32,16 +32,19 @@
/* Part of bootrom - Don't use it without a jump */
label = "free";
reg = <0x00000000 0x0001e000>;
read-only;
};
partition@1e000 {
label = "env";
reg = <0x0001e000 0x00002000>;
read-only;
};
partition@20000 {
label = "uboot";
reg = <0x00020000 0x00050000>;
read-only;
};
};
};

2
target/linux/apm821xx/sata/config-default
View File

@ -35,6 +35,8 @@ CONFIG_MD_RAID0=y
CONFIG_MD_RAID1=y
# CONFIG_MD_RAID10 is not set
# CONFIG_MD_RAID456 is not set
CONFIG_MTD_PHYSMAP=y
CONFIG_MTD_JEDECPROBE=y
CONFIG_PM=y
CONFIG_PM_AUTOSLEEP=y
CONFIG_PM_CLK=y