Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935431Ab3DHQ6f (ORCPT ); Mon, 8 Apr 2013 12:58:35 -0400 Received: from mail-ia0-f201.google.com ([209.85.210.201]:47483 "EHLO mail-ia0-f201.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935026Ab3DHQ6d (ORCPT ); Mon, 8 Apr 2013 12:58:33 -0400 From: Doug Anderson To: Kukjin Kim Cc: Olof Johansson , Thomas Abraham , linux-samsung-soc@vger.kernel.org, Doug Anderson , Russell King , Jingoo Han , Padmavathi Venna , Giridhar Maruthy , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH] ARM: dts: Disable the RTC by default on exynos5 Date: Mon, 8 Apr 2013 09:58:15 -0700 Message-Id: <1365440295-4460-1-git-send-email-dianders@chromium.org> X-Mailer: git-send-email 1.8.1.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3491 Lines: 72 This change makes the rtc on the exynos5250 and 5440 disabled by default to match exynos4. Ever since the common clock framework came in came in, exynos5250 boards have dumped lots of warnings in the boot log. It turns out that we don't see those on exynos4 since the rtc is disabled by default. While we need to get to the bottom of the problems with the RTC, it still makes sense to have the default state of the RTC on exynos boards match. For the record, warnings look like this: ------------[ cut here ]------------ WARNING: at /.../drivers/clk/clk.c:771 __clk_enable+0x34/0xb0() Modules linked in: [<80015bfc>] (unwind_backtrace+0x0/0xec) from [<804717f0>] (dump_stack+0x20/0x24) [<804717f0>] (dump_stack+0x20/0x24) from [<80023cd0>] (warn_slowpath_common+0x5c/0x7c) [<80023cd0>] (warn_slowpath_common+0x5c/0x7c) from [<80023d1c>] (warn_slowpath_null+0x2c/0x34) [<80023d1c>] (warn_slowpath_null+0x2c/0x34) from [<8035ddb0>] (__clk_enable+0x34/0xb0) [<8035ddb0>] (__clk_enable+0x34/0xb0) from [<8035de54>] (clk_enable+0x28/0x3c) [<8035de54>] (clk_enable+0x28/0x3c) from [<8031a160>] (s3c_rtc_probe+0xf4/0x434) [<8031a160>] (s3c_rtc_probe+0xf4/0x434) from [<8028e288>] (platform_drv_probe+0x24/0x28) [<8028e288>] (platform_drv_probe+0x24/0x28) from [<8028ce10>] (driver_probe_device+0xbc/0x22c) [<8028ce10>] (driver_probe_device+0xbc/0x22c) from [<8028cff8>] (__driver_attach+0x78/0x9c) [<8028cff8>] (__driver_attach+0x78/0x9c) from [<8028bdfc>] (bus_for_each_dev+0x64/0xac) [<8028bdfc>] (bus_for_each_dev+0x64/0xac) from [<8028c7e0>] (driver_attach+0x28/0x30) [<8028c7e0>] (driver_attach+0x28/0x30) from [<8028c43c>] (bus_add_driver+0xe0/0x234) [<8028c43c>] (bus_add_driver+0xe0/0x234) from [<8028d55c>] (driver_register+0xac/0x13c) [<8028d55c>] (driver_register+0xac/0x13c) from [<8028e4f4>] (platform_driver_register+0x54/0x68) [<8028e4f4>] (platform_driver_register+0x54/0x68) from [<8065c944>] (s3c_rtc_driver_init+0x14/0x1c) [<8065c944>] (s3c_rtc_driver_init+0x14/0x1c) from [<800086d8>] (do_one_initcall+0x60/0x138) [<800086d8>] (do_one_initcall+0x60/0x138) from [<80633a8c>] (kernel_init_freeable+0x108/0x1d0) [<80633a8c>] (kernel_init_freeable+0x108/0x1d0) from [<8046d2f8>] (kernel_init+0x1c/0xf4) [<8046d2f8>] (kernel_init+0x1c/0xf4) from [<8000e358>] (ret_from_fork+0x14/0x20) ---[ end trace 4bcdc801c868d73f ]--- Signed-off-by: Doug Anderson --- arch/arm/boot/dts/exynos5250.dtsi | 1 + arch/arm/boot/dts/exynos5440.dtsi | 1 + 2 files changed, 2 insertions(+) diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi index dc55e33..892b724 100644 --- a/arch/arm/boot/dts/exynos5250.dtsi +++ b/arch/arm/boot/dts/exynos5250.dtsi @@ -183,6 +183,7 @@ interrupts = <0 43 0>, <0 44 0>; clocks = <&clock 337>; clock-names = "rtc"; + status = "disabled"; }; tmu@10060000 { diff --git a/arch/arm/boot/dts/exynos5440.dtsi b/arch/arm/boot/dts/exynos5440.dtsi index 25c6134..a8ceef4 100644 --- a/arch/arm/boot/dts/exynos5440.dtsi +++ b/arch/arm/boot/dts/exynos5440.dtsi @@ -181,5 +181,6 @@ interrupts = <0 17 0>, <0 16 0>; clocks = <&clock 21>; clock-names = "rtc"; + status = "disabled"; }; }; -- 1.8.1.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/