From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3595AC433E0 for ; Mon, 8 Feb 2021 17:32:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D569E64E7D for ; Mon, 8 Feb 2021 17:32:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234932AbhBHRbu (ORCPT ); Mon, 8 Feb 2021 12:31:50 -0500 Received: from mail.kernel.org ([198.145.29.99]:36394 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232496AbhBHP3N (ORCPT ); Mon, 8 Feb 2021 10:29:13 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 80DEE64F26; Mon, 8 Feb 2021 15:16:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1612797397; bh=i7aH55UCf84lDGj/wVz0K2TdKwppSpxqd0Kdj/FbDOQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pdVX8MNTX9NgBI5OyaEiSQdP/qxU/TV84RG6UShrd22IuFrzChu8arWht8zWc/OVn rMEjsQbJs4JnzRYRsO5izlnjnJrQTi8gNszLkpMiyMQen7r4Bxsqy1oV1o+CPnTbgy N0o3hp81GhoEPbVLs/ddWyP+Np5LYh4xTUVeRTgQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, "H. Nikolaus Schaller" , Tony Lindgren Subject: [PATCH 5.10 094/120] DTS: ARM: gta04: remove legacy spi-cs-high to make display work again Date: Mon, 8 Feb 2021 16:01:21 +0100 Message-Id: <20210208145822.140858617@linuxfoundation.org> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210208145818.395353822@linuxfoundation.org> References: <20210208145818.395353822@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: H. Nikolaus Schaller commit 07af7810e0a5bc4e51682c90f9fa19fc4cb93f18 upstream. This reverts commit f1f028ff89cb ("DTS: ARM: gta04: introduce legacy spi-cs-high to make display work again") which had to be intruduced after commit 6953c57ab172 ("gpio: of: Handle SPI chipselect legacy bindings") broke the GTA04 display. This contradicted the data sheet but was the only way to get it as an spi client operational again. The panel data sheet defines the chip-select to be active low. Now, with the arrival of commit 766c6b63aa04 ("spi: fix client driver breakages when using GPIO descriptors") the logic of interaction between spi-cs-high and the gpio descriptor flags has been changed a second time, making the display broken again. So we have to remove the original fix which in retrospect was a workaround of a bug in the spi subsystem and not a feature of the panel or bug in the device tree. With this fix the device tree is back in sync with the data sheet and spi subsystem code. Fixes: 766c6b63aa04 ("spi: fix client driver breakages when using GPIO descriptors") CC: stable@vger.kernel.org Signed-off-by: H. Nikolaus Schaller Signed-off-by: Tony Lindgren Signed-off-by: Greg Kroah-Hartman --- arch/arm/boot/dts/omap3-gta04.dtsi | 1 - 1 file changed, 1 deletion(-) --- a/arch/arm/boot/dts/omap3-gta04.dtsi +++ b/arch/arm/boot/dts/omap3-gta04.dtsi @@ -124,7 +124,6 @@ spi-max-frequency = <100000>; spi-cpol; spi-cpha; - spi-cs-high; backlight= <&backlight>; label = "lcd";