From patchwork Thu Nov 17 08:47:38 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Carlo Caione X-Patchwork-Id: 626053 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 224CEC4332F for ; Thu, 17 Nov 2022 08:47:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239620AbiKQIr5 (ORCPT ); Thu, 17 Nov 2022 03:47:57 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48414 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239346AbiKQIry (ORCPT ); Thu, 17 Nov 2022 03:47:54 -0500 Received: from mail-ed1-x52b.google.com (mail-ed1-x52b.google.com [IPv6:2a00:1450:4864:20::52b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1B3F3A45B for ; Thu, 17 Nov 2022 00:47:53 -0800 (PST) Received: by mail-ed1-x52b.google.com with SMTP id x2so1555446edd.2 for ; Thu, 17 Nov 2022 00:47:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20210112.gappssmtp.com; s=20210112; h=cc:to:message-id:date:from:content-transfer-encoding:mime-version :subject:from:to:cc:subject:date:message-id:reply-to; bh=5sycVuNTi+/lWP5w5Y+7Py7HL44YtQg/RIL/+2UUkSY=; b=LerjEkGDet8twDf7kawTGEK6yjpahMcCxhAgmIj+Uhp5Y2ToZA2vL105irqZLSsKfU c+LQ37p+1ejyh2oDDCwlx+71iys9g+yYbxQOSVTdRIPpMZKMebD3L6vbY7xvoYTj2ysA dA+1tq50hVlm9jtGhn6ygV7yQvatY5f62oJr0EllmSAhG1qR9mcE7PHFmrOHZLF2HrTe NXS/KTJ2K6dBfbV5Zar4Nm8GSb5Ol6M2VVfam7vqizfUetbz5uvxzdbINt9a3yc7z/yl RJqyEWRb93Q8tblau3bK9Yl/7ROUCkYlh+IeZDpHfHy3HSWP8vcLEJ/nu4cLNNs3gNDH K6HQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:message-id:date:from:content-transfer-encoding:mime-version :subject:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=5sycVuNTi+/lWP5w5Y+7Py7HL44YtQg/RIL/+2UUkSY=; b=5dlU431WasVZdbV8B05v9KupAfevcEoMBdV30G/ZKuzl4XrMEL8wFeTFsgKpJI9zlG saIK3NopAhHX/lkSaidMKUH4AylfUQ0AqvhqdlNVluCReBrAthzY/zA5bZMf3h8kIgYa BfRKHnfkmA95yk6jqu0YnKhJHJ94zDGdcMLUF0FKhaKtXcs73kO88ktgne5wNu2Vuipg /vVVRHnG14rEauCzqiovzc3QP1OhkpcbXm0ctr74Xva5SqccIMwxYqXc4OFXk29Oikk0 fTIwGPvrpGGQYFkri4LM05m4QBJpLzSWlbSixyvAfRLRj9HodtBXFxcObJmvYqvPesZi kcaw== X-Gm-Message-State: ANoB5pmshJj1bfh6SmVnselyd/Q3QfujM4j93EbtbF8IuR53tvZNXkeD uoTk5zUEHGW1uBuXs1KOBmtljw== X-Google-Smtp-Source: AA0mqf7JP9+5lVRU9EXpUjP4FKM/FMDReRATO9BwVt89A/oOf+IKkEbT+OEv6hzjSAn10BUJHykrPQ== X-Received: by 2002:a05:6402:3895:b0:468:15f1:54b5 with SMTP id fd21-20020a056402389500b0046815f154b5mr1306318edb.8.1668674871621; Thu, 17 Nov 2022 00:47:51 -0800 (PST) Received: from [127.0.1.1] ([2a0e:41a:894f:0:7a60:27eb:954c:5ab1]) by smtp.gmail.com with ESMTPSA id s22-20020a1709067b9600b0077205dd15basm77332ejo.66.2022.11.17.00.47.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Nov 2022 00:47:51 -0800 (PST) Subject: [PATCH 0/3] Fix SPICC and ILI9486 drivers MIME-Version: 1.0 X-b4-tracking: H4sIACr1dWMC/w3LSQqAMAwAwK9IzhZMXVA/I11SDZQqDYpQ/Ls9zmEKCGUmgbUpkOlh4TNVYNuAO0 zaSbGvBt1pjYiTkqUb300u3jjyMsyTMuTHIYTeWY1QnzVCymaT3FFnumP8vh/jeo0xaAAAAA== From: Carlo Caione Date: Thu, 17 Nov 2022 09:47:38 +0100 Message-Id: <20221116-s905x_spi_ili9486-v1-0-630401cb62d5@baylibre.com> To: Kamlesh Gurudasani , Mark Brown , Neil Armstrong , Jerome Brunet , David Airlie , Martin Blumenstingl , Kevin Hilman , Daniel Vetter Cc: linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, dri-devel@lists.freedesktop.org, Carlo Caione X-Mailer: b4 0.10.1 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org This patchset is trying to fix problems seen on S905X boards when interfacing with an ILI9486 equipped SPI panel. The color corruption and the performance issues are actually due to two different problems in the SPICC driver and in the ILI9486 tiny DRM driver. We try to fix both in the same patcheset to be able to correctly use the SPI panel again. To: Kamlesh Gurudasani To: David Airlie To: Daniel Vetter To: Mark Brown To: Neil Armstrong To: Kevin Hilman To: Jerome Brunet To: Martin Blumenstingl Cc: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org Cc: linux-spi@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-amlogic@lists.infradead.org Signed-off-by: Carlo Caione --- Carlo Caione (3): drm/tiny: rpi-lcd-35: Enable driver module autoloading drm/tiny: ili9486: Do not assume 8-bit only SPI controllers spi: meson-spicc: Lower CS between bursts drivers/gpu/drm/tiny/ili9486.c | 14 ++++++++++---- drivers/spi/spi-meson-spicc.c | 6 ++++++ 2 files changed, 16 insertions(+), 4 deletions(-) --- base-commit: 15f3bff12cf6a888ec2ad39652828c60e6836b3d change-id: 20221116-s905x_spi_ili9486-aed54ff3cb21 Best regards,