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

From	Vignesh R <vigneshr@ti.com>
Newsgroups	linux.kernel
Subject	[PATCH] ARM: dts: dra7xx: Increase spi-max-frequency to 76.8MHz for QSPI
Date	2016-08-01 15:20 +0200
Message-ID	<s1lip-6Ns-15@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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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>
---
 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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[PATCH] ARM: dts: dra7xx: Increase spi-max-frequency to 76.8MHz for QSPI Vignesh R <vigneshr@ti.com> - 2016-08-01 15:20 +0200

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