Patch "ARM: dts: da850-evm: fix read access to SPI flash" has been added to the 4.9-stable tree

This is a note to let you know that I've just added the patch titled

ARM: dts: da850-evm: fix read access to SPI flash

to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
arm-dts-da850-evm-fix-read-access-to-spi-flash.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Fabien Parent <[email protected]>
Date: Tue, 17 Jan 2017 13:57:42 +0100
Subject: ARM: dts: da850-evm: fix read access to SPI flash

From: Fabien Parent <[email protected]>

commit 43849785e1079f6606a31cb7fda92d1200849728 upstream.

Read access to the SPI flash are broken on da850-evm, i.e. the data read is not what is actually programmed on the flash. According to the datasheet for the M25P64 part present on the da850-evm, if the SPI frequency is higher than 20MHz then the READ command is not usable anymore and only the FAST_READ command can be used to read data.

This commit specifies in the DTS that we should use FAST_READ command instead of the READ command.

---
 arch/arm/boot/dts/da850-evm.dts |    1 +
 1 file changed, 1 insertion(+)

@@ -99,6 +99,7 @@
 				#size-cells = <1>;
 				compatible = "m25p64";
 				spi-max-frequency = <30000000>;
+				m25p,fast-read;
 				reg = <0>;
 				partition@0 {
 					label = "U-Boot-SPL";

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/arm-dts-da850-evm-fix-read-access-to-spi-flash.patch