Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753190AbdFSTXN (ORCPT + 2 others); Mon, 19 Jun 2017 15:23:13 -0400 Received: from wtarreau.pck.nerim.net ([62.212.114.60]:52114 "EHLO 1wt.eu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751118AbdFSSfe (ORCPT ); Mon, 19 Jun 2017 14:35:34 -0400 From: Willy Tarreau To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, linux@roeck-us.net Cc: Fabien Parent , Sekhar Nori , Jiri Slaby , Olof Johansson , Willy Tarreau Subject: [PATCH 3.10 105/268] ARM: dts: da850-evm: fix read access to SPI flash Date: Mon, 19 Jun 2017 20:30:04 +0200 Message-Id: <1497897167-14556-106-git-send-email-w@1wt.eu> X-Mailer: git-send-email 2.8.0.rc2.1.gbe9624a In-Reply-To: <1497897167-14556-1-git-send-email-w@1wt.eu> References: <1497897167-14556-1-git-send-email-w@1wt.eu> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Return-Path: From: Fabien Parent commit 43849785e1079f6606a31cb7fda92d1200849728 upstream. Read access to the SPI flash are broken on da850-evm, i.e. the data read is not what is actually programmed on the flash. According to the datasheet for the M25P64 part present on the da850-evm, if the SPI frequency is higher than 20MHz then the READ command is not usable anymore and only the FAST_READ command can be used to read data. This commit specifies in the DTS that we should use FAST_READ command instead of the READ command. Tested-by: Kevin Hilman Signed-off-by: Fabien Parent [nsekhar@ti.com: subject line adjustment] Signed-off-by: Sekhar Nori Signed-off-by: Jiri Slaby Signed-off-by: Olof Johansson Signed-off-by: Willy Tarreau --- arch/arm/boot/dts/da850-evm.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/da850-evm.dts b/arch/arm/boot/dts/da850-evm.dts index c914357..d3c206e 100644 --- a/arch/arm/boot/dts/da850-evm.dts +++ b/arch/arm/boot/dts/da850-evm.dts @@ -59,6 +59,7 @@ #size-cells = <1>; compatible = "m25p64"; spi-max-frequency = <30000000>; + m25p,fast-read; reg = <0>; partition@0 { label = "U-Boot-SPL"; -- 2.8.0.rc2.1.gbe9624a