From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756649AbbIXPkd (ORCPT ); Thu, 24 Sep 2015 11:40:33 -0400 Received: from mailgw02.mediatek.com ([210.61.82.184]:38185 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1753350AbbIXPkb (ORCPT ); Thu, 24 Sep 2015 11:40:31 -0400 X-Listener-Flag: 11101 From: Yingjoe Chen To: Russell King - ARM Linux , Matthias Brugger CC: , Arnd Bergmann , Stephen Boyd , , Rob Herring , , Sascha Hauer , Olof Johansson , , , Yingjoe Chen Subject: [PATCH v4 1/5] ARM: mediatek: enable gpt6 on boot up to make arch timer working Date: Thu, 24 Sep 2015 23:38:56 +0800 Message-ID: <1443109140-5406-2-git-send-email-yingjoe.chen@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1443109140-5406-1-git-send-email-yingjoe.chen@mediatek.com> References: <1443109140-5406-1-git-send-email-yingjoe.chen@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Matthias Brugger We enable GTP6 which ungates the arch timer clock. In the future this should be done in the bootloader. Signed-off-by: Matthias Brugger Signed-off-by: Yingjoe Chen --- arch/arm/mach-mediatek/mediatek.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/arch/arm/mach-mediatek/mediatek.c b/arch/arm/mach-mediatek/mediatek.c index a954900..19dc738 100644 --- a/arch/arm/mach-mediatek/mediatek.c +++ b/arch/arm/mach-mediatek/mediatek.c @@ -16,6 +16,32 @@ */ #include #include +#include +#include +#include + + +#define GPT6_CON_MT65xx 0x10008060 +#define GPT_ENABLE 0x31 + +static void __init mediatek_timer_init(void) +{ + void __iomem *gpt_base; + + if (of_machine_is_compatible("mediatek,mt6589") || + of_machine_is_compatible("mediatek,mt8135") || + of_machine_is_compatible("mediatek,mt8127")) { + /* turn on GPT6 which ungates arch timer clocks */ + gpt_base = ioremap(GPT6_CON_MT65xx, 0x04); + + /* enable clock and set to free-run */ + writel(GPT_ENABLE, gpt_base); + iounmap(gpt_base); + } + + of_clk_init(NULL); + clocksource_of_init(); +}; static const char * const mediatek_board_dt_compat[] = { "mediatek,mt6589", @@ -27,4 +53,5 @@ static const char * const mediatek_board_dt_compat[] = { DT_MACHINE_START(MEDIATEK_DT, "Mediatek Cortex-A7 (Device Tree)") .dt_compat = mediatek_board_dt_compat, + .init_time = mediatek_timer_init, MACHINE_END -- 1.9.1