From patchwork Wed Dec 11 19:39:51 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jean Pihet X-Patchwork-Id: 11286163 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 06270138D for ; Wed, 11 Dec 2019 19:40:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D8D31206C3 for ; Wed, 11 Dec 2019 19:40:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=newoldbits-com.20150623.gappssmtp.com header.i=@newoldbits-com.20150623.gappssmtp.com header.b="OyYfzPw9" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727079AbfLKTkN (ORCPT ); Wed, 11 Dec 2019 14:40:13 -0500 Received: from mail-wr1-f67.google.com ([209.85.221.67]:43140 "EHLO mail-wr1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726242AbfLKTkN (ORCPT ); Wed, 11 Dec 2019 14:40:13 -0500 Received: by mail-wr1-f67.google.com with SMTP id d16so25366029wre.10 for ; Wed, 11 Dec 2019 11:40:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=newoldbits-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=ylqoV41ZpzJJBrHRQMY0axmiPq/PYW8ywOAaGjDloD0=; b=OyYfzPw91OOzrcop43fq30RAMDAuDuduk6aJkmv2GosZwSke0qrgH/8FOocGr9/ZY2 i95KhbbPCEW9TcuTeMRRqaIEzxrJPX4XZLFaFfE/fnRPMtpbDMbkm1VgBBh/0kABCAUZ LY/aD65lEylqaA8MqXmo3ssNA1gOoncxpftSNCy2b0euo3hGTCNSReQa+rGFHQR9FV+h majCPnKRmd2NnF6ejBrUEDdlX9d+GsVldyHk+MNK+L4CGJ78inH9DkN7W3i7qQcvsipD RoNJU53jKYLzVWKal5ooB4LtN/8J5bYTVuRZK12eVOZImmeohqYk2zqMDHJJRk77XLsr XyfA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=ylqoV41ZpzJJBrHRQMY0axmiPq/PYW8ywOAaGjDloD0=; b=Inji26n4Ww9/2MddFP1x6ZlN3WPsOzfNG+kPQw04wvxsxatGiSVZNyAmBUMsA0glun 4gkGsi953QMG6RRaujzJBZwZdE8S3dlkLX1qzG7iTwRyhUy+WeEMQIczTGWZL1GJOYYk ZnBmdSwz/idf/SF2jDhcAmrgeA97vwN28vuDDjtfErAUhvCprCXxfw6kpz0lnErKvEe8 5mjgRv8l5OfXDmy72g2Hec8TFJgKZPJTqQV7+gVeAm0cbW5n2h9BnYiaY3R0fncIRTo4 /0pDPTJhkayR84KEFThLnJOpRF1EogQyWHVhVtFt4EDTj7J8DfQycvP/QtujjHLmLdhv PxuA== X-Gm-Message-State: APjAAAUhnso4XMM99BDGYnVcGltFKcNEsBOfatkWfybRqz/YeQ4vdXDK gwZJDD+FpXFp/TakNQoqi0amog== X-Google-Smtp-Source: APXvYqzkB5HtLK+BYiPxFzJ9N1c83p/UCm0ALVMPCHvgV3EHZyv1TAyn6BSSLy6uXejtgqPx0kcjkg== X-Received: by 2002:a5d:6305:: with SMTP id i5mr1648048wru.119.1576093211172; Wed, 11 Dec 2019 11:40:11 -0800 (PST) Received: from msilabo.lan (241.33-200-80.adsl-dyn.isp.belgacom.be. [80.200.33.241]) by smtp.gmail.com with ESMTPSA id x1sm3309964wru.50.2019.12.11.11.40.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Dec 2019 11:40:10 -0800 (PST) From: Jean Pihet To: Mark Brown , Tony Lindgren , Vignesh Raghavendra Cc: linux-omap@vger.kernel.org, linux-spi@vger.kernel.org, Ryan Barnett , Conrad Ratschan , Arnout Vandecappelle , Jean Pihet Subject: [PATCH 0/3] spi: spi-ti-qspi: Support large NOR SPI flash Date: Wed, 11 Dec 2019 20:39:51 +0100 Message-Id: <20191211193954.747745-1-jean.pihet@newoldbits.com> X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org v2 release. Large devices are bigger than >64MB in size. - Remove unused macro for fclk rate. - Since the TI QSPI IP block only maps 64MB of MMIO, use MMIO below the 64MB boundary and software generated transfers above. - Optimize the software generated byte-transfers for dual and quad I/O read operations. The speed-up is 4.9x for quad I/O reads. Note: depends on Tony's patches for hwmod cleanup, in order to get the desired QSPI clk rate: - [PATCH 1/2] ARM: dts: Configure interconnect target module for am4 qspi - [PATCH 2/2] ARM: OMAP2+: Drop legacy platform data for am4 qspi Tested using raw accesses (mtd_debug) and JFFS2 FS read/write/erase; in single, dual and quad modes. All accesses have been checked on the logic analyzer. Jean Pihet (3): spi: spi-ti-qspi: Remove unused macro for fclk frequency spi: spi-ti-qspi: support large flash devices spi: spi-ti-qspi: optimize byte-transfers drivers/spi/spi-ti-qspi.c | 84 ++++++++++++++++++++++++++++++++++++--- 1 file changed, 79 insertions(+), 5 deletions(-)