From patchwork Thu Mar 23 17:30:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Douglas Anderson X-Patchwork-Id: 666254 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 7B109C77B61 for ; Thu, 23 Mar 2023 17:31:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232464AbjCWRbl (ORCPT ); Thu, 23 Mar 2023 13:31:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44424 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232320AbjCWRb1 (ORCPT ); Thu, 23 Mar 2023 13:31:27 -0400 Received: from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com [IPv6:2607:f8b0:4864:20::102b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9DC8A2B9D9 for ; Thu, 23 Mar 2023 10:31:23 -0700 (PDT) Received: by mail-pj1-x102b.google.com with SMTP id q102so7630176pjq.3 for ; Thu, 23 Mar 2023 10:31:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1679592683; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=FoRlfx7CbmqnP3zURzbR63MNq645Q0jdEhms+74MeYc=; b=kAbV/I/7xnERMCRUryA9uRdH+3r0Gbql1oICa8dpLQkpw3nzC30aFv0O2WVZhad+Rg z/5TPz2pe2fz4w0QwV2aTcCxsSSCzZRWT4Rb7+IXKwSWE25W9HVRgq2ygsxETUMA6Yeu 1bfWQmuHyrMczCGKRaLFy9bXJTz805huHOKHY= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1679592683; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=FoRlfx7CbmqnP3zURzbR63MNq645Q0jdEhms+74MeYc=; b=yfRm7ZaQ5rWwcdceGgPerQVEjDmeylfK+j5p5mzWYxxKpBmftEiyKCZVZDwxBd5TZ1 oXx5McD5e3LFXwzwoeGUpdz3yImibsf4ij0+grwyTSfxcvX7Eysf0iwFknu/ld0xjyvo 87OD5c9NH0UGtYMx3oivP+qgtpDKcBsOmd7v0mqPD0424FZLLLZHIAVnDEWnRzHWW6tO FkSF0m4wQqI7j+Y4/476OhC1rL3nCL6fulm6J//nGtIjwcRcJjOlUxMaSom05Pp76ZA0 CGIZpd8A2t5opBGLIlpFN9AT/UTYGmaoI7h1nwXrzsI0dMNllNqRFptMQlI5+N1PmEFT HHYg== X-Gm-Message-State: AO0yUKXhncfK7I+kFuniax/40UKUk9a9g23vnIhxD6jxyFh9HBFr0ERd IiQLa7WYsjNvOutwHdopr39yDA== X-Google-Smtp-Source: AK7set+wKfX/T8HiiMPPsgLGNmM1PcdDUUn5hrO5kvSgLUVSymrEOe8m2EhrenDZ8jrFoHqrR+7FrA== X-Received: by 2002:a05:6a20:33a8:b0:d4:c605:4512 with SMTP id f40-20020a056a2033a800b000d4c6054512mr318424pzd.30.1679592683296; Thu, 23 Mar 2023 10:31:23 -0700 (PDT) Received: from tictac2.mtv.corp.google.com ([2620:15c:9d:2:16d3:ef20:206a:6521]) by smtp.gmail.com with ESMTPSA id x13-20020a62fb0d000000b0061a6f4c1b2bsm12613546pfm.171.2023.03.23.10.31.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Mar 2023 10:31:21 -0700 (PDT) From: Douglas Anderson To: Bjorn Andersson , Rob Herring , Krzysztof Kozlowski , Mark Brown , Linus Walleij Cc: Matthias Kaehlcke , Konrad Dybcio , linux-gpio@vger.kernel.org, Stephen Boyd , devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-spi@vger.kernel.org, Douglas Anderson , Andy Gross , linux-kernel@vger.kernel.org Subject: [PATCH 06/14] dt-bindings: pinctrl: qcom: tlmm should use output-disable, not input-enable Date: Thu, 23 Mar 2023 10:30:10 -0700 Message-Id: <20230323102605.6.I291ce0ba2c6ea80b341659c4f75a567a76dd7ca6@changeid> X-Mailer: git-send-email 2.40.0.348.gf938b09366-goog In-Reply-To: <20230323173019.3706069-1-dianders@chromium.org> References: <20230323173019.3706069-1-dianders@chromium.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org As evidenced by the Qualcomm TLMM Linux driver, the TLMM IP block in Qualcomm SoCs has a bit to enable/disable the output for a pin that's configured as a GPIO but _not_ a bit to enable/disable an input buffer. Current device trees that are specifying "input-enable" for pins managed by TLMM are either doing so needlessly or are using it to mean "output-disable". Presumably the current convention of using "input-enable" to mean "output-disable" stems from the fact that "output-disable" is a "new" property from 2017. It was introduced in commit 425562429d4f ("pinctrl: generic: Add output-enable property"). The "input-enable" handling in Qualcomm drivers is from 2015 introduced in commit 407f5e392f9c ("pinctrl: qcom: handle input-enable pinconf property"). Given that there's no other use for "input-enable" for TLMM, we can still handle old device trees in code, but let's encourage people to move to the proper / documented property by updating the bindings. Signed-off-by: Douglas Anderson Reviewed-by: Krzysztof Kozlowski --- .../devicetree/bindings/pinctrl/qcom,tlmm-common.yaml | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,tlmm-common.yaml b/Documentation/devicetree/bindings/pinctrl/qcom,tlmm-common.yaml index cb5ba1bd6f8d..5a815c199642 100644 --- a/Documentation/devicetree/bindings/pinctrl/qcom,tlmm-common.yaml +++ b/Documentation/devicetree/bindings/pinctrl/qcom,tlmm-common.yaml @@ -75,7 +75,8 @@ $defs: bias-pull-down: true bias-pull-up: true bias-disable: true - input-enable: true + input-enable: false + output-disable: true output-high: true output-low: true