From patchwork Sat Sep 19 20:08:37 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Drew Fustini X-Patchwork-Id: 11787287 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 A4135746 for ; Sat, 19 Sep 2020 20:10:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7B5692085B for ; Sat, 19 Sep 2020 20:10:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=beagleboard-org.20150623.gappssmtp.com header.i=@beagleboard-org.20150623.gappssmtp.com header.b="L9ZNoEf+" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726518AbgISUKY (ORCPT ); Sat, 19 Sep 2020 16:10:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48654 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726575AbgISUKX (ORCPT ); Sat, 19 Sep 2020 16:10:23 -0400 Received: from mail-ej1-x642.google.com (mail-ej1-x642.google.com [IPv6:2a00:1450:4864:20::642]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6B2A2C0613D1 for ; Sat, 19 Sep 2020 13:10:23 -0700 (PDT) Received: by mail-ej1-x642.google.com with SMTP id p9so12566407ejf.6 for ; Sat, 19 Sep 2020 13:10:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=beagleboard-org.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=bIUgrI9VvUV3joqrWL0lDga1yejUz0t72Nx3sYu9s5I=; b=L9ZNoEf+xu48ppvnblmZrK2nJchaz2vEmWMEwk0swPeneNBWwlEvhh9K2LRJ4HX/Lr yaLd88oTJthtaQqxoTU6Bpq9MompSoGcLiUcNpIfeAA00igj+XiDykYLeLV/Jw8j1hhS INZQvLR3KlU5Mz4ouanoPhPkOE8DEebpwgHK1I4PX/UKjaA9eUPZ+znYNIZ1yQpacRBA 0HOeF7HiDNqgNDI2rcBXnSTaJk5w+fymuI/a9RBVIXTu7CcWALUG5FTdeATk0vZ2Ud7H bROaU33aeRXMmpNvS74rrEVYF/PP54F9jib8fsmGcXYMFfhRBbqJE69KatbCAS7mm5Y+ RIbw== 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=bIUgrI9VvUV3joqrWL0lDga1yejUz0t72Nx3sYu9s5I=; b=GMc1lTmcmQY/WLonxNTZCVBk45JBVy4fqPbMDPKibd4yVEZgL1zul5aXZtUg1oBTHt yuASJ5iwmVe6v5d+m/uBTfgqHoLVTb7K98GEX1Sgq+tS8Y8YvXn7tzlpupFYMd62fnI9 PNufFPxvJ74cfdAkVA27l7co0O/Ktl3j4S418DL6vqh5/rKxBsVHyL9FdNVvz3LI3dx5 p0W0E9bXwmhHPyQSKxuQL3IRLT+Z9hfk10mrkz8R9Hin0Ws/M9FvXcnF813uMCN6IeKX rXFopCRj/cSV0AnvyNaTi1FOz/xe8k0GwUJ73clJnE1WMDDFxuF3As/JXHFlW+89g/gI OVug== X-Gm-Message-State: AOAM531uSQ9EY8S8tOAvb4wgk4EshFtJON6CWoshwuKyWPyTCzQnVExK cHV8oc7bK+xf+j0BwzJ+7CtBqw== X-Google-Smtp-Source: ABdhPJyXNqZQicq1ULAO60r8L8+AZhDK5qSHeRWT+5a8VqRkbjyQ+aQHZc7zHY/Lxi8bZlOvg+97sQ== X-Received: by 2002:a17:906:4553:: with SMTP id s19mr41341473ejq.475.1600546220782; Sat, 19 Sep 2020 13:10:20 -0700 (PDT) Received: from localhost.localdomain ([2001:16b8:5c3d:1401:6946:9f46:bd13:f4c6]) by smtp.gmail.com with ESMTPSA id ks21sm5008761ejb.63.2020.09.19.13.10.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 19 Sep 2020 13:10:19 -0700 (PDT) From: Drew Fustini To: Tony Lindgren , Rob Herring , Linus Walleij , Jason Kridner , Robert Nelson , Trent Piepho , Christina Quast , linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-gpio@vger.kernel.org Cc: Drew Fustini Subject: [PATCH v2] ARM: dts: document pinctrl-single,pins when #pinctrl-cells = 2 Date: Sat, 19 Sep 2020 22:08:37 +0200 Message-Id: <20200919200836.3218536-1-drew@beagleboard.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org Document the values in pinctrl-single,pins when #pinctrl-cells = <2> Fixes: 27c90e5e48d0 ("ARM: dts: am33xx-l4: change #pinctrl-cells from 1 to 2") Reported-by: Trent Piepho Link: https://lore.kernel.org/linux-omap/3139716.CMS8C0sQ7x@zen.local/ Signed-off-by: Drew Fustini Acked-by: Tony Lindgren Reviewed-by: Rob Herring --- v2 change: - rephrase to make it clear that the pin conf value and pin mux value are OR'd together with #pinctrl-cells = <2> .../bindings/pinctrl/pinctrl-single.txt | 21 ++++++++++++------- 1 file changed, 14 insertions(+), 7 deletions(-) diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt index e705acd3612c..f903eb4471f8 100644 --- a/Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt +++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt @@ -94,16 +94,23 @@ pinctrl-single,bit-per-mux is set), and uses the common pinctrl bindings as specified in the pinctrl-bindings.txt document in this directory. The pin configuration nodes for pinctrl-single are specified as pinctrl -register offset and value pairs using pinctrl-single,pins. Only the bits -specified in pinctrl-single,function-mask are updated. For example, setting -a pin for a device could be done with: +register offset and values using pinctrl-single,pins. Only the bits specified +in pinctrl-single,function-mask are updated. + +When #pinctrl-cells = 1, then setting a pin for a device could be done with: pinctrl-single,pins = <0xdc 0x118>; -Where 0xdc is the offset from the pinctrl register base address for the -device pinctrl register, and 0x118 contains the desired value of the -pinctrl register. See the device example and static board pins example -below for more information. +Where 0xdc is the offset from the pinctrl register base address for the device +pinctrl register, and 0x118 contains the desired value of the pinctrl register. + +When #pinctrl-cells = 2, then setting a pin for a device could be done with: + + pinctrl-single,pins = <0xdc 0x30 0x07>; + +Where 0x30 is the pin configuration value and 0x07 is the pin mux mode value. +These two values are OR'd together to produce the value stored at offset 0xdc. +See the device example and static board pins example below for more information. In case when one register changes more than one pin's mux the pinctrl-single,bits need to be used which takes three parameters: