[PATCH] ARM: dts: dra7xx: Increase spi-max-frequency to 76.8MHz for QSPI
From: Vignesh R <vigneshr@ti.com>
Date: 2016-08-01 13:09:51
Also in:
linux-arm-kernel, linux-omap, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
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