From mboxrd@z Thu Jan 1 00:00:00 1970 From: vigneshr@ti.com (Vignesh R) Date: Thu, 25 Feb 2016 10:17:32 +0530 Subject: [PATCH] ARM: dts: dra7: Support QSPI MODE-0 operation at 64MHz Message-ID: <1456375652-14071-1-git-send-email-vigneshr@ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org According to Data Manual(SPRS915P) of AM57x, TI QSPI controller on DRA74(rev 1.1+) can support up to 64MHz in MODE-0, whereas MODE-3 is limited to 48MHz. Hence, switch to MODE-0 for better throughput. Signed-off-by: Vignesh R --- arch/arm/boot/dts/dra7-evm.dts | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/arch/arm/boot/dts/dra7-evm.dts b/arch/arm/boot/dts/dra7-evm.dts index cfc24e52244e..15f10bdc8c31 100644 --- a/arch/arm/boot/dts/dra7-evm.dts +++ b/arch/arm/boot/dts/dra7-evm.dts @@ -653,15 +653,13 @@ pinctrl-names = "default"; pinctrl-0 = <&qspi1_pins>; - spi-max-frequency = <48000000>; + spi-max-frequency = <64000000>; m25p80 at 0 { compatible = "s25fl256s1"; - spi-max-frequency = <48000000>; + spi-max-frequency = <64000000>; reg = <0>; spi-tx-bus-width = <1>; spi-rx-bus-width = <4>; - spi-cpol; - spi-cpha; #address-cells = <1>; #size-cells = <1>; -- 2.7.1