Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755479AbbB0VXb (ORCPT ); Fri, 27 Feb 2015 16:23:31 -0500 Received: from mail-wg0-f53.google.com ([74.125.82.53]:35067 "EHLO mail-wg0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755276AbbB0VWr (ORCPT ); Fri, 27 Feb 2015 16:22:47 -0500 From: Lee Jones To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: lee.jones@linaro.org, kernel@stlinux.com, mturquette@linaro.org, sboyd@codeaurora.org, devicetree@vger.kernel.org Subject: [PATCH 2/4] ARM: sti: stih410-clocks: Identify critical clocks as always-on Date: Fri, 27 Feb 2015 21:14:32 +0000 Message-Id: <1425071674-16995-3-git-send-email-lee.jones@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1425071674-16995-1-git-send-email-lee.jones@linaro.org> References: <1425071674-16995-1-git-send-email-lee.jones@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1826 Lines: 64 Lots of platforms contain clocks which if turned off would prove fatal. The only way to recover is to restart the board(s). This driver takes references to clocks which are required to be always-on in order to prevent the common clk framework from trying to turn them off during the clk_disabled_unused() procedure. In this patch we are identifying clocks, which if gated would render the STiH410 development board unserviceable. Signed-off-by: Lee Jones --- arch/arm/boot/dts/stih410-clock.dtsi | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm/boot/dts/stih410-clock.dtsi b/arch/arm/boot/dts/stih410-clock.dtsi index 6b5803a..7b257c2 100644 --- a/arch/arm/boot/dts/stih410-clock.dtsi +++ b/arch/arm/boot/dts/stih410-clock.dtsi @@ -103,6 +103,7 @@ clocks = <&clk_sysin>; clock-output-names = "clk-s-a0-pll-ofd-0"; + clock-always-on = "clk-s-a0-pll-ofd-0"; }; clk_s_a0_flexgen: clk-s-a0-flexgen { @@ -115,6 +116,8 @@ clock-output-names = "clk-ic-lmi0", "clk-ic-lmi1"; + + clock-always-on = "clk-ic-lmi0"; }; }; @@ -142,6 +145,7 @@ clocks = <&clk_sysin>; clock-output-names = "clk-s-c0-pll0-odf-0"; + clock-always-on = "clk-s-c0-pll0-odf-0"; }; clk_s_c0_pll1: clk-s-c0-pll1 { @@ -204,6 +208,12 @@ "clk-clust-hades", "clk-hwpe-hades", "clk-fc-hades"; + + clock-always-on = "clk-icn-cpu", + "clk-tx-icn-dmu", + "clk-ext2fa9", + "clk-icn-lmi", + "clk-icn-sbc"; }; }; -- 1.9.1 -- 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/