[U-Boot] [PATCH 4/4] ARM: dts: dra7xx: Update spi-max-frequency for QSPI

[Vignesh R]

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

Signed-off-by: Vignesh R <vigneshr at ti.com>
---
 arch/arm/dts/dra7-evm.dts  | 2 +-
 arch/arm/dts/dra72-evm.dts | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/dts/dra7-evm.dts b/arch/arm/dts/dra7-evm.dts
index 429b9edc1b2b..8b77a761d211 100644
--- a/arch/arm/dts/dra7-evm.dts
+++ b/arch/arm/dts/dra7-evm.dts
@@ -491,7 +491,7 @@
 	pinctrl-names = "default";
 	pinctrl-0 = <&qspi1_pins>;
 
-	spi-max-frequency = <64000000>;
+	spi-max-frequency = <76800000>;
 	m25p80 at 0 {
 		compatible = "s25fl256s1","spi-flash";
 		spi-max-frequency = <64000000>;
diff --git a/arch/arm/dts/dra72-evm.dts b/arch/arm/dts/dra72-evm.dts
index ced2f1166d8c..c7c5d40adac7 100644
--- a/arch/arm/dts/dra72-evm.dts
+++ b/arch/arm/dts/dra72-evm.dts
@@ -603,7 +603,7 @@
 	pinctrl-names = "default";
 	pinctrl-0 = <&qspi1_pins>;
 
-	spi-max-frequency = <64000000>;
+	spi-max-frequency = <76800000>;
 	m25p80 at 0 {
 		compatible = "s25fl256s1","spi-flash";
 		spi-max-frequency = <64000000>;
-- 
2.9.2