From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755133AbbAZLOQ (ORCPT ); Mon, 26 Jan 2015 06:14:16 -0500 Received: from mail-ig0-f181.google.com ([209.85.213.181]:43334 "EHLO mail-ig0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754932AbbAZLOK (ORCPT ); Mon, 26 Jan 2015 06:14:10 -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 0/4] clk: st: New clock domain Date: Mon, 26 Jan 2015 11:13:56 +0000 Message-Id: <1422270840-3039-1-git-send-email-lee.jones@linaro.org> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org ST hardware have a bunch of clocks which must not be turned off. If drivers a) fail to obtain a reference to any of these or b) give up a previously obtained reference during suspend, the common clk framework will attempt to turn them off and the hardware will subsequently die. The only way to recover from this failure is to restart. To avoid either of these two scenarios from catastrophically disabling the running system we have implemented a clock domain where clocks are consumed and references are taken, thus preventing them from being shut down by the framework. Lee Jones (4): ARM: sti: stih407-family: Supply defines for CLOCKGEN A0 ARM: sti: stih407-family: Provide Clock Domain information clk: st: Provide a clock domain clk: dt: st: Introduce clock domain documentation .../devicetree/bindings/clock/st/st,clk-domain.txt | 34 ++++++++++++ arch/arm/boot/dts/stih407-family.dtsi | 13 +++++ drivers/clk/st/Makefile | 2 +- drivers/clk/st/clk-domain.c | 63 ++++++++++++++++++++++ include/dt-bindings/clock/stih407-clks.h | 4 ++ 5 files changed, 115 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/clock/st/st,clk-domain.txt create mode 100644 drivers/clk/st/clk-domain.c -- 1.9.1