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| author | Fabien Parent <fparent@baylibre.com> | 2017-01-17 13:57:42 +0100 |
|---|---|---|
| committer | Olof Johansson <olof@lixom.net> | 2017-01-19 16:23:19 -0800 |
| commit | 43849785e1079f6606a31cb7fda92d1200849728 (patch) | |
| tree | 530d3a1dda82159d8c2e038bbf6f7e8cbbf2647f /arch | |
| parent | e47a8b172972ef10246e72e9277d27e3119e35ab (diff) | |
| download | linux-exynos-43849785e1079f6606a31cb7fda92d1200849728.tar.gz linux-exynos-43849785e1079f6606a31cb7fda92d1200849728.tar.bz2 linux-exynos-43849785e1079f6606a31cb7fda92d1200849728.zip | |
ARM: dts: da850-evm: fix read access to SPI flash
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.
Cc: stable@vger.kernel.org
Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Fabien Parent <fparent@baylibre.com>
[nsekhar@ti.com: subject line adjustment]
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/boot/dts/da850-evm.dts | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/da850-evm.dts b/arch/arm/boot/dts/da850-evm.dts index 41de15fe15a2..78492a0bbbab 100644 --- a/arch/arm/boot/dts/da850-evm.dts +++ b/arch/arm/boot/dts/da850-evm.dts @@ -99,6 +99,7 @@ #size-cells = <1>; compatible = "m25p64"; spi-max-frequency = <30000000>; + m25p,fast-read; reg = <0>; partition@0 { label = "U-Boot-SPL"; |