From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vignesh R Subject: [PATCH 0/2] DRA7x: Increase QSPI frequency to 64MHz Date: Thu, 14 Apr 2016 15:48:19 +0530 Message-ID: <1460629101-24309-1-git-send-email-vigneshr@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit Return-path: Sender: linux-kernel-owner@vger.kernel.org To: Tony Lindgren Cc: Rob Herring , Vignesh R , nsekhar@ti.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org List-Id: devicetree@vger.kernel.org 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