lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Tue, 24 Jan 2017 08:55:39 +0100
From:   Greg Kroah-Hartman <>
Cc:     Greg Kroah-Hartman <>,, Kevin Hilman <>,
        Fabien Parent <>,
        Sekhar Nori <>, Olof Johansson <>
Subject: [PATCH 4.4 29/42] ARM: dts: da850-evm: fix read access to SPI flash

4.4-stable review patch.  If anyone has any objections, please let me know.


From: Fabien Parent <>

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.

Tested-by: Kevin Hilman <>
Signed-off-by: Fabien Parent <>
[ subject line adjustment]
Signed-off-by: Sekhar Nori <>
Signed-off-by: Greg Kroah-Hartman <>

Signed-off-by: Olof Johansson <>

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

--- a/arch/arm/boot/dts/da850-evm.dts
+++ b/arch/arm/boot/dts/da850-evm.dts
@@ -85,6 +85,7 @@
 				#size-cells = <1>;
 				compatible = "m25p64";
 				spi-max-frequency = <30000000>;
+				m25p,fast-read;
 				reg = <0>;
 				partition@0 {
 					label = "U-Boot-SPL";

Powered by blists - more mailing lists