Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759604Ab3EXHZa (ORCPT ); Fri, 24 May 2013 03:25:30 -0400 Received: from hqemgate15.nvidia.com ([216.228.121.64]:18563 "EHLO hqemgate15.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756671Ab3EXHZ3 (ORCPT ); Fri, 24 May 2013 03:25:29 -0400 X-Greylist: delayed 901 seconds by postgrey-1.27 at vger.kernel.org; Fri, 24 May 2013 03:25:29 EDT X-PGP-Universal: processed; by hqnvupgp07.nvidia.com on Fri, 24 May 2013 00:10:35 -0700 From: Alexandre Courbot To: Stephen Warren , Peter De Schrijver CC: , , , Alexandre Courbot Subject: [PATCH] ARM: tegra114: correctly output clk_32k Date: Fri, 24 May 2013 16:10:07 +0900 Message-ID: <1369379407-12764-1-git-send-email-acourbot@nvidia.com> X-Mailer: git-send-email 1.8.2.3 X-NVConfidentiality: public MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1476 Lines: 40 Tegra has a blink timer register that allows to modulate the clk_32k clock before outputting it. Since clk_32k is presented to the kernel as a fixed clock, make sure this register does not tamper with the clock frequency and that clk_32k is outputted as-is, similarly to what is done on t20 and t30. Signed-off-by: Alexandre Courbot --- drivers/clk/tegra/clk-tegra114.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/clk/tegra/clk-tegra114.c b/drivers/clk/tegra/clk-tegra114.c index d78e16e..dc76d67 100644 --- a/drivers/clk/tegra/clk-tegra114.c +++ b/drivers/clk/tegra/clk-tegra114.c @@ -127,6 +127,7 @@ #define PMC_DPD_PADS_ORIDE_BLINK_ENB 20 #define PMC_CTRL 0 #define PMC_CTRL_BLINK_ENB 7 +#define PMC_BLINK_TIMER 0x40 #define OSC_CTRL 0x50 #define OSC_CTRL_OSC_FREQ_SHIFT 28 @@ -1625,6 +1626,8 @@ static void __init tegra114_pmc_clk_init(void __iomem *pmc_base) clks[clk_out_3] = clk; /* blink */ + /* clear the blink timer register to directly output clk_32k */ + writel_relaxed(0, pmc_base + PMC_BLINK_TIMER); clk = clk_register_gate(NULL, "blink_override", "clk_32k", 0, pmc_base + PMC_DPD_PADS_ORIDE, PMC_DPD_PADS_ORIDE_BLINK_ENB, 0, NULL); -- 1.8.2.3 -- 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/