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@xxxxxx>
---
arch/arm/boot/dts/dra7-evm.dts | 4 ++--
arch/arm/boot/dts/dra72-evm-common.dtsi | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/arm/boot/dts/dra7-evm.dts b/arch/arm/boot/dts/dra7-evm.dts
index bafcfac067ec..f9d1170033fd 100644
--- a/arch/arm/boot/dts/dra7-evm.dts
+++ b/arch/arm/boot/dts/dra7-evm.dts
@@ -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>;
diff --git a/arch/arm/boot/dts/dra72-evm-common.dtsi b/arch/arm/boot/dts/dra72-evm-common.dtsi
index 9d3cf50ca37e..c94d8d64710d 100644
--- a/arch/arm/boot/dts/dra72-evm-common.dtsi
+++ b/arch/arm/boot/dts/dra72-evm-common.dtsi
@@ -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>;
--
2.9.2
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