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ARM: dts: dra7xx: Increase spi-max-frequency to 76.8MHz for QSPI

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According to AM572x DM SPRS953A, QSPI maximum bus speed can be 76.8MHz.
Therefore, increase the spi-max-frequency value of QSPI node to 76.8MHz
for DRA74 and DRA72 evm. This improves flash raw read speed by ~2MB/s.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Vignesh R 2016-08-01 18:36:55 +05:30 committed by Tony Lindgren
parent 9860f7e920
commit a0b83af0df
2 changed files with 4 additions and 4 deletions
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4
arch/arm/boot/dts/dra7-evm.dts
View File

@ -664,10 +664,10 @@
&qspi {
status = "okay";
spi-max-frequency = <64000000>;
spi-max-frequency = <76800000>;
m25p80@0 {
compatible = "s25fl256s1";
spi-max-frequency = <64000000>;
spi-max-frequency = <76800000>;
reg = <0>;
spi-tx-bus-width = <1>;
spi-rx-bus-width = <4>;

4
arch/arm/boot/dts/dra72-evm-common.dtsi
View File

@ -681,10 +681,10 @@
&qspi {
status = "okay";
spi-max-frequency = <64000000>;
spi-max-frequency = <76800000>;
m25p80@0 {
compatible = "s25fl256s1";
spi-max-frequency = <64000000>;
spi-max-frequency = <76800000>;
reg = <0>;
spi-tx-bus-width = <1>;
spi-rx-bus-width = <4>;