From patchwork Sun Aug 30 13:51:31 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 11745013 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 7868F722 for ; Sun, 30 Aug 2020 13:54:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 611F02145D for ; Sun, 30 Aug 2020 13:54:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598795676; bh=fNOR3ktNBhKbqIJUVlvuY0rQ8hgLEd0Ryu6hSGGEjtk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=utdOHjO8nTTYNnXSG/ydgMhwW6nKZ4tOnsWBglyS6dyRKJEiWWznQjdGOmebwGtlU VeIa7Y3i5i1N2mMEP95BKdf5naI3VYTTPhJSIFnCRcP/63e8qEu05oqys+ubouK39I AFuPjBxhaKeTsZtzM99dWZRO4iKg8xoCUsv1nEZY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728905AbgH3NyR (ORCPT ); Sun, 30 Aug 2020 09:54:17 -0400 Received: from mail.kernel.org ([198.145.29.99]:54910 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728891AbgH3NyJ (ORCPT ); Sun, 30 Aug 2020 09:54:09 -0400 Received: from localhost.localdomain (unknown [194.230.155.216]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E76A820757; Sun, 30 Aug 2020 13:54:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598795646; bh=fNOR3ktNBhKbqIJUVlvuY0rQ8hgLEd0Ryu6hSGGEjtk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TVvzd4AVp0qCPY1TAvQxfzalqgqRidkWpPHa+A101iHsRcBlMxzLX8ys5tc6+C3TW Ee60kfyn11e5TTzxZnmsRaSWApM5GWzG2pjQrj0/1jXkK7qpMYsvmQ0mKFKwboRI5v PUXY/uVZtXisEkWbSWaJH/D3Fr+NjgrIJQnHUtJk= From: Krzysztof Kozlowski To: Rob Herring , Kukjin Kim , Krzysztof Kozlowski , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, "Denis GNUtoo Carikli" , Simon Shields Cc: Marek Szyprowski , Bartlomiej Zolnierkiewicz , Sylwester Nawrocki Subject: [PATCH 04/33] ARM: dts: exynos: Correct S3C RTC bindings and enable it in Origen Date: Sun, 30 Aug 2020 15:51:31 +0200 Message-Id: <20200830135200.24304-4-krzk@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200830135200.24304-1-krzk@kernel.org> References: <20200830135200.24304-1-krzk@kernel.org> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org The S3C RTC requires 32768 Hz clock as input which is provided by PMIC (Maxim MAX8997). However there is no clock provided for the PMIC and the driver registers the clock as regulator. This is an old driver which will not be updated so add a workaround: 1. Enable the "clock" regulator in PMIC, 2. Add a fixed-clock to fill missing clock phandle reference in S3C RTC. This allows to enable the S3C RTC and fixes dtbs_check warnings: arch/arm/boot/dts/exynos4210-origen.dt.yaml: rtc@10070000: clocks: [[5, 346]] is too short arch/arm/boot/dts/exynos4210-origen.dt.yaml: rtc@10070000: clock-names: ['rtc'] is too short Signed-off-by: Krzysztof Kozlowski Tested-by: Marek Szyprowski --- arch/arm/boot/dts/exynos4210-origen.dts | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/arm/boot/dts/exynos4210-origen.dts b/arch/arm/boot/dts/exynos4210-origen.dts index 890525b10d22..747221bbb856 100644 --- a/arch/arm/boot/dts/exynos4210-origen.dts +++ b/arch/arm/boot/dts/exynos4210-origen.dts @@ -100,6 +100,13 @@ compatible = "samsung,clock-xusbxti"; clock-frequency = <24000000>; }; + + pmic_ap_clk: pmic-ap-clk { + /* Workaround for missing clock on max8997 PMIC */ + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <32768>; + }; }; display-timings { @@ -286,6 +293,11 @@ regulator-boot-on; regulator-always-on; }; + + EN32KHZ_AP { + regulator-name = "EN32KHZ_AP"; + regulator-always-on; + }; }; }; }; @@ -331,6 +343,8 @@ &rtc { status = "okay"; + clocks = <&clock CLK_RTC>, <&pmic_ap_clk>; + clock-names = "rtc", "rtc_src"; }; &tmu {