From: Vignesh R <vigneshr@ti.com>
To: Tony Lindgren <tony@atomide.com>
Cc: Rob Herring <robh+dt@kernel.org>, Vignesh R <vigneshr@ti.com>,
nsekhar@ti.com, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/2] DRA7x: Increase QSPI frequency to 64MHz
Date: Thu, 14 Apr 2016 15:48:19 +0530 [thread overview]
Message-ID: <1460629101-24309-1-git-send-email-vigneshr@ti.com> (raw)
This patch series increases QSPI bus frequency to 64MHz and switch to
SPI mode 0 in order to increase read/write throughput.
First patch removes QSPI pinmux from DT as pinmux can only be done in
U-Boot(see patch commit message for more info). Second patch does the
dts changes to support 64MHz mode 0 operation.
Tested on DRA74 and DRA72 EVM with U-Boot 2016.05-rc1.
Vignesh R (2):
ARM: dts: dra7x: Remove QSPI pinmux
ARM: dts: dra7x: Support QSPI MODE-0 operation at 64MHz
Documentation/devicetree/bindings/spi/ti_qspi.txt | 7 +++++++
arch/arm/boot/dts/dra7-evm.dts | 23 ++---------------------
arch/arm/boot/dts/dra72-evm.dts | 20 ++------------------
3 files changed, 11 insertions(+), 39 deletions(-)
--
2.8.1
next reply other threads:[~2016-04-14 10:18 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-14 10:18 Vignesh R [this message]
2016-04-14 10:18 ` [PATCH 1/2] ARM: dts: dra7x: Remove QSPI pinmux Vignesh R
2016-04-14 10:18 ` [PATCH 2/2] ARM: dts: dra7x: Support QSPI MODE-0 operation at 64MHz Vignesh R
[not found] ` <1460629101-24309-3-git-send-email-vigneshr-l0cyMroinI0@public.gmane.org>
2016-04-14 17:12 ` Rob Herring
2016-04-15 15:08 ` R, Vignesh
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