Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751918AbdHCPsh (ORCPT ); Thu, 3 Aug 2017 11:48:37 -0400 Received: from mail.free-electrons.com ([62.4.15.54]:58639 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751158AbdHCPsg (ORCPT ); Thu, 3 Aug 2017 11:48:36 -0400 Date: Thu, 3 Aug 2017 17:48:34 +0200 From: Boris Brezillon To: Abhishek Sahu Cc: dwmw2@infradead.org, computersforpeace@gmail.com, marek.vasut@gmail.com, richard@nod.at, cyrille.pitchen@wedev4u.fr, robh+dt@kernel.org, mark.rutland@arm.com, linux-mtd@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, andy.gross@linaro.org, architt@codeaurora.org, sricharan@codeaurora.org Subject: Re: [PATCH v2 02/25] mtd: nand: qcom: program NAND_DEV_CMD_VLD register Message-ID: <20170803174834.6ad3a542@bbrezillon> In-Reply-To: <1500464893-11352-3-git-send-email-absahu@codeaurora.org> References: <1500464893-11352-1-git-send-email-absahu@codeaurora.org> <1500464893-11352-3-git-send-email-absahu@codeaurora.org> X-Mailer: Claws Mail 3.13.2 (GTK+ 2.24.30; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1221 Lines: 37 On Wed, 19 Jul 2017 17:17:50 +0530 Abhishek Sahu wrote: > The current driver is failing without complete bootchain since > NAND_DEV_CMD_VLD value is not valid. > > Signed-off-by: Abhishek Sahu BTW, do you want to backport this fix? Maybe you add Fixes and Cc-stable tags... > --- > drivers/mtd/nand/qcom_nandc.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/mtd/nand/qcom_nandc.c b/drivers/mtd/nand/qcom_nandc.c > index bc0408c..f3b995d 100644 > --- a/drivers/mtd/nand/qcom_nandc.c > +++ b/drivers/mtd/nand/qcom_nandc.c > @@ -148,6 +148,9 @@ > #define FETCH_ID 0xb > #define RESET_DEVICE 0xd > > +/* Value for NAND_DEV_CMD_VLD */ > +#define NAND_DEV_CMD_VLD_VAL 0x1d > + > /* > * the NAND controller performs reads/writes with ECC in 516 byte chunks. > * the driver calls the chunks 'step' or 'codeword' interchangeably > @@ -1972,6 +1975,7 @@ static int qcom_nandc_setup(struct qcom_nand_controller *nandc) > { > /* kill onenand */ > nandc_write(nandc, SFLASHC_BURST_CFG, 0); > + nandc_write(nandc, NAND_DEV_CMD_VLD, NAND_DEV_CMD_VLD_VAL); > > /* enable ADM DMA */ > nandc_write(nandc, NAND_FLASH_CHIP_SELECT, DM_EN);