jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found. is25lp256d

[Frieder Schrempf]

Hi Frank,

On 15.03.2018 15:13, Frank Smith wrote:
> Dear list,
> 
> I am trying to get a new issi flash device (is25lp256d, 32MB) working.
> http://www.issi.com/WW/pdf/IS25LP(WP)256D.pdf
> 
> Therefore I added this line to spi-nor.c:
> 
> { "is25lp256d", INFO(0x9d6019, 0, 64 * 1024, 512, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | SPI_NOR_HAS_LOCK) },
> 
> I can confirm the flash device works as espected for the first 16MB.
> 
> 
> But, when I change the partition in the device tree, from 16MB to 32MB I get the following errror: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found.

I guess you need to set SPI_NOR_4B_OPCODES flag to use 4 byte addressing 
and be able to access memory above 16MB.

Regards,

Frieder

> 
> Changed "reg = <0x600000 0xa00000>;" to "reg = <0x600000 0x1a00000>;" in my device-tree file as follows:
> 
> spi_2: spi at 0x31044000 {
> 	#address-cells = <1>;
> 	#size-cells = <0>;
> 	compatible = "adi,spi3";
> 	reg = <0x31044000 0xFF>;
> 	interrupts = <0 71 0>;
> 	num-cs = <128>;
> 	dma-channel = <26>, <27>;
> 	pinctrl-names = "default";
> 	pinctrl-0 = <&spi2_quad>;
> 
> 	flash: s25fl128s at 0 {
> 		#address-cells = <1>;
> 		#size-cells = <1>;
> 		compatible = "issi,is25lp256d", "jedec,spi-nor";
> 		spi-max-frequency = <50000000>;
> 		reg = <31>;
> 		spi-cpol;
> 		spi-cpha;
> 		spi-tx-bus-width = <4>;
> 		spi-rx-bus-width = <4>;
> 		dma-mode;
> 		partition at 0 {
> 			label = "uboot (spi)";
> 			reg = <0x0 0x80000>;
> 		};
> 		partition at 1 {
> 			label = "kernel (spi)";
> 			reg = <0x80000 0x580000>;
> 		};
> 		partition at 2 {
> 			label = "root file system (spi)";
> 			reg = <0x600000 0x1a00000>;   /* <--- changed this from 0x0a00000 to 0x1a00000 */
> 		};
> 	};
> };
> 
> Tried to use mtd-tools, but when writing at address 0xaXXXXX or higher, linux starts hanging, without a Ops.
> 
> Any Ideas? What is wrong with the higher addresses?
> 
> ______________________________________________________
> Linux MTD discussion mailing list
> http://lists.infradead.org/mailman/listinfo/linux-mtd/
>