From patchwork Mon Apr 15 21:30:26 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sowjanya Komatineni X-Patchwork-Id: 1085939 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-tegra-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=nvidia.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=nvidia.com header.i=@nvidia.com header.b="aJb7PFrr"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 44jhX71NmNz9s5c for ; Tue, 16 Apr 2019 07:31:35 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727929AbfDOVaq (ORCPT ); Mon, 15 Apr 2019 17:30:46 -0400 Received: from hqemgate14.nvidia.com ([216.228.121.143]:16516 "EHLO hqemgate14.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726751AbfDOVap (ORCPT ); Mon, 15 Apr 2019 17:30:45 -0400 Received: from hqpgpgate102.nvidia.com (Not Verified[216.228.121.13]) by hqemgate14.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Mon, 15 Apr 2019 14:30:49 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate102.nvidia.com (PGP Universal service); Mon, 15 Apr 2019 14:30:44 -0700 X-PGP-Universal: processed; by hqpgpgate102.nvidia.com on Mon, 15 Apr 2019 14:30:44 -0700 Received: from HQMAIL104.nvidia.com (172.18.146.11) by HQMAIL104.nvidia.com (172.18.146.11) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Mon, 15 Apr 2019 21:30:44 +0000 Received: from hqnvemgw02.nvidia.com (172.16.227.111) by HQMAIL104.nvidia.com (172.18.146.11) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Mon, 15 Apr 2019 21:30:44 +0000 Received: from skomatineni-linux.nvidia.com (Not Verified[10.2.167.253]) by hqnvemgw02.nvidia.com with Trustwave SEG (v7, 5, 8, 10121) id ; Mon, 15 Apr 2019 14:30:43 -0700 From: Sowjanya Komatineni To: , , , , , , , CC: , , , , Subject: [PATCH V3 1/9] spi: tegra114: fix PIO transfer Date: Mon, 15 Apr 2019 14:30:26 -0700 Message-ID: <1555363834-32155-2-git-send-email-skomatineni@nvidia.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1555363834-32155-1-git-send-email-skomatineni@nvidia.com> References: <1555363834-32155-1-git-send-email-skomatineni@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1555363849; bh=nbVXrbqv2urGZ3Y5Gipe5PPV6peKmW/6Qou8swlcXLs=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=aJb7PFrr6785bFXRUU2T7yu89z/559Vsj/MAnSsYSKjMSP5VKIAaudWb6S9wmkFAi Y50l8iihmqgHcfdEkumoeXXAGLp2pS3Dxo5cYpso6pFTBIMeDxNPZiP6PHrJywdILm abmPKZyhwDyf0Y72YPR0AXGZjPDrkZN0y17CGWi5cluTPAvdNjlLf1uml6XyK3HOmh 8moIDpdLc17NuuOtDic0ME2vY7Qg0M/vjyCzv7JmXOuDux9JnSnOOcKnOdttl0pAl4 GtqdKVhF9HxpOFhZef3JF/+PrqnpDH16M0qh7kjaZT0VjtCDgAmqSNJMdSNyOx3nec 3QxY11AD0ptxA== Sender: linux-tegra-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org This patch fixes PIO mode transfer to use PIO bit in SPI_COMMAND1 register. Current driver uses DMA_EN instead of PIO bit. Signed-off-by: Sowjanya Komatineni --- drivers/spi/spi-tegra114.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-tegra114.c b/drivers/spi/spi-tegra114.c index b8c6393e2190..b1f31bb16659 100644 --- a/drivers/spi/spi-tegra114.c +++ b/drivers/spi/spi-tegra114.c @@ -651,8 +651,9 @@ static int tegra_spi_start_cpu_based_transfer( tspi->is_curr_dma_xfer = false; - val |= SPI_DMA_EN; - tegra_spi_writel(tspi, val, SPI_DMA_CTL); + val = tspi->command1_reg; + val |= SPI_PIO; + tegra_spi_writel(tspi, val, SPI_COMMAND1); return 0; }