From patchwork Mon Aug 1 13:06:55 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vignesh Raghavendra X-Patchwork-Id: 9254373 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 006D86075F for ; Mon, 1 Aug 2016 13:14:14 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E6C6228330 for ; Mon, 1 Aug 2016 13:14:13 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DB70B284A2; Mon, 1 Aug 2016 13:14:13 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B307F28330 for ; Mon, 1 Aug 2016 13:14:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753511AbcHANOM (ORCPT ); Mon, 1 Aug 2016 09:14:12 -0400 Received: from arroyo.ext.ti.com ([198.47.19.12]:35643 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753472AbcHANOL (ORCPT ); Mon, 1 Aug 2016 09:14:11 -0400 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by arroyo.ext.ti.com (8.13.7/8.13.7) with ESMTP id u71D70un028010; Mon, 1 Aug 2016 08:07:00 -0500 Received: from DLEE71.ent.ti.com (dlee71.ent.ti.com [157.170.170.114]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id u71D70Mt007456; Mon, 1 Aug 2016 08:07:00 -0500 Received: from dlep32.itg.ti.com (157.170.170.100) by DLEE71.ent.ti.com (157.170.170.114) with Microsoft SMTP Server id 14.3.294.0; Mon, 1 Aug 2016 08:06:59 -0500 Received: from uda0132425.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep32.itg.ti.com (8.14.3/8.13.8) with ESMTP id u71D6urG021874; Mon, 1 Aug 2016 08:06:57 -0500 From: Vignesh R To: Tony Lindgren CC: Rob Herring , Mark Rutland , , , , , Vignesh R Subject: [PATCH] ARM: dts: dra7xx: Increase spi-max-frequency to 76.8MHz for QSPI Date: Mon, 1 Aug 2016 18:36:55 +0530 Message-ID: <20160801130655.15004-1-vigneshr@ti.com> X-Mailer: git-send-email 2.9.2 MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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 --- 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>;